US1991520A - Dumbbell - Google Patents
- ️Tue Feb 19 1935
US1991520A - Dumbbell - Google Patents
Dumbbell Download PDFInfo
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Publication number
- US1991520A US1991520A US676862A US67686233A US1991520A US 1991520 A US1991520 A US 1991520A US 676862 A US676862 A US 676862A US 67686233 A US67686233 A US 67686233A US 1991520 A US1991520 A US 1991520A Authority
- US
- United States Prior art keywords
- weights
- handle
- covering
- weight
- extension Prior art date
- 1933-06-21 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/06—User-manipulated weights
- A63B21/072—Dumb-bells, bar-bells or the like, e.g. weight discs having an integral peripheral handle
- A63B21/0728—Dumb-bells, bar-bells or the like, e.g. weight discs having an integral peripheral handle with means for fixing weights on bars, i.e. fixing olympic discs or bumper plates on bar-bells or dumb-bells
Definitions
- My invention relates generally j to exercising devices, and particularly concerns improved principles in the design andconstruction, of dumb.- bells' and'clubs. i
- One of .the important objects of my invention is to design ,and construct a dumb-bell ofwhichl VVeach end Ythereof is comprised of a plurality of plates vor discs which are of various weights; in Vother words, it is an object to provide a dumbbell of a character whereby its weight may be increased oriV decreased according to the satisfaction of the user.
- Another object of my invention is to provide improved means for locking the plates or elements forming the Weightstogether, said ⁇ locking means being concealed from view.
- Another object isl to'provide a novel covering fori-he handle and ends of the dumb-bell.v
- A, further object is to arrange and design one of the coverings in a manner whereby it will tend to serve as a lock Washer. i.
- a further object is to provide a ⁇ structure in which the handle thereof is provided with a novel covering forming a gripping portion, the covering also being designed tending to serve as a; lock Washer.
- a still further object is to provide a device' of which the structurethereof is substantial and durable.. 1 v C
- Many other objects and advantages ofthe vdevice Will appear afterconsidering the descripton hereinafter set forth in connection with the drawing hereunto annexed Whereinelements comprising the device are designated by certain numerals.
- Fig. l is a view disclosing ⁇ a dumb-bell in elevation, a part thereof being in section for Ythe purpose of illustration; y
- Fig. 2 is a section taken ⁇ on line 2-2 through one end of the dumb-bell show n Vin Fig. 1; and Fig. 3 is a section taken on line 3 3 through the handle shown in Fig. 1. u
- the handle may be made tubular adjacent the endsjonly.VV It is also to be understood thatthe handlemay be tapered from the centertowards ,the ends; or in other words, slightly rounded adjacent thecentral portion thereof, and may be made so as togbe of a specific Weight.
- The. handle, as shown,A isinternally threaded as indicated at 5.
- . -A suitable Acovering 6 providing a gripping portion Apreferably of resilient materialmay surround the j handle, if desired, and may obviously bel-made of Yany suitable material andof any design.
- the ends of the covering are extended a slight extent beyond the endsof-the handles as indicatedat 6', and thus the, covering serves as a lock Washer tending to hold the variousparts in firm assembled relation.
- each end is comprised-cf a plurality, of. plates or Adiscs of variousweights, 'l in the present instance, being an.end'weight,.and 8, 9, and A10, otherV weights,
- weights each being provided with an and 10, witlrthe end 13 of the extension 12 threadably engaging the threads 5 of the handle in order to .properly hold al1 of the Weights in Iirrn assembled relation.
- the weights .may be constructed ofany suitable material and may be circular inv shapeor otherwise and'be of any suitable weight.
- plates 8 and 9 may each weigh two. pounds and the plate Y10, one pound, and thus, itis evident that the weight of the dumb-bell may be increased or decreased as desired.
- the novel locking means for holding the plates, forming the weights, together in assembled relation with respect to the handle as above referred to, includes a threaded;V extension 12.
- the threaded extension 12 is preferably provided with anenlargement 141which is embedded in a seat l5 provided in ⁇ the end plate or weight 7; thus the end plate serves as an operating member, the end 13 of extension 12 of the operating memberf?, being engageable with the threads 5 of the handle, thusV 'making it -possible to vary the weight ofthe dumb-bell byadding or decreasing the Weights
- the threaded extension 12 may be of any suitable' construction, however, in the present instance, is in the form of a bolt of which the headthereof is embedded in the end weight 7 in a manner Wherebymanipulation of the member 'Z will correspondingly move the extension 12. It willbe'noted that thelojcking meansthus disclosed is of a novel character, and is concealed from View.
- the end weight 7 may be of any suitable design, however,
- Vthe plates 8 to l0, inclusive, which form the weights are each encircled at the periphery by a band of resilient material 17, preferably of rubber.
- the end plate operating member 7 is provided with a covering 18, which'is similar to eachv of the coverings 17, however den viates therefrom, in view of the faetthat itis more or Aless of channel shape in cross-section,
- either of the bands, such as 17, may be provided with an inwardly extending portion Ysimilar to that designated 20 of the band 18, in order to more or less tend to bind the adjacent weights with respectY to each other.
- a device of the kind described including a handle internally threaded and a plurality of weights, a'threaded' extension having ane enlargement at one endand threads provided adjacent the other end of the extension, the Yenlargement of said extension being imbedded in one of said weights in a manner whereby the material of which lthe weight is made entirely surrounds said enlargement, the threaded end of said extension being of a character to extend through the other weightsaV suiiicient distance for the threads of said extension to engage the threads of said handle and hold the weights in assembled relation to the handle,-a covering'for each of-said' Weights and a covering for saidhandle, the covering for the end weight of said plurality of weights.V being of channel shape in cross Section in order to surround the edge and part of the faces of said weight and with a portion of said covering ar- ⁇ ranged betweena pair of weights toprovide a lockY washer.
- a device of the kind described including a handle internally threaded and a plurality Yof weights, a threaded extension having an enlargement at one end and threadsV provided adjacent the other end of the extensiongthe enlargement of said extension being imbedded in onel of said weights in a manner whereby the'material of Which the weight is made entirely surrounds and engages said enlargement, the threaded end of said extension being of a character to extend 15 'through the other weights a ⁇ s uflicient distance for ⁇ the threads of said extension to engage they each of Said weights and a covering for saidhanrality of weights beingrof channel shape in cross section in order to surround the edge and vpart of the faces of said weight and with a portion of said covering'arranged' between a pair of ⁇ weights'A to threads of said handle and hold the weights inY assembledrelation to the handle, a covering for 20 dle, the covering for the end weight ofsaidfplu- Y provide -a lock washer,
- a deviceof the kind described comprising an elongated handle member having a' threaded bore atreachrend, a member providingy a cover for and projectingA slightly beyond' the endsof the handle member, a plurality ⁇ of disc weights mounted on each ⁇ end of said handle member, the outer weights each-having a channel shaped cover.4 prothereof to clamp ⁇ the contiguous weights between" the adjacent flanged edge of'its cover and the adjacent projecting end of said handle cover.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Orthopedic Medicine & Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
Description
` Feb. 19, 1935. J. M. poen. 1,991,520
DUMBBELL Fild June 21. 195s jjmm @- 'l MMM @if Patented Feb. y19, "1935 1 UNITED STATES P.9J-r)surA oi-FICEv i 5 My invention relates generally j to exercising devices, and particularly concerns improved principles in the design andconstruction, of dumb.- bells' and'clubs. i
5 g One of .the important objects of my invention is to design ,and construct a dumb-bell ofwhichl VVeach end Ythereof is comprised of a plurality of plates vor discs which are of various weights; in Vother words, it is an object to provide a dumbbell of a character whereby its weight may be increased oriV decreased according to the satisfaction of the user.
Another object of my invention is to provide improved means for locking the plates or elements forming the Weightstogether, said `locking means being concealed from view.
Another object isl to'provide a novel covering fori-he handle and ends of the dumb-bell.v
A, further object is to arrange and design one of the coverings in a manner whereby it will tend to serve as a lock Washer. i.
A further object is to provide a `structure in which the handle thereof is provided with a novel covering forming a gripping portion, the covering also being designed tending to serve as a; lock Washer.
A still further object is to provide a device' of which the structurethereof is substantial and durable.. 1 v C Many other objects and advantages ofthe vdevice Will appear afterconsidering the descripton hereinafter set forth in connection with the drawing hereunto annexed Whereinelements comprising the device are designated by certain numerals.
With reference to the drawing:-
Fig. l is a view disclosing `a dumb-bell in elevation, a part thereof being in section for Ythe purpose of illustration; y
Fig. 2 is a section taken `on line 2-2 through one end of the dumb-bell show n Vin Fig. 1; and Fig. 3 is a section taken on
line3 3 through the handle shown in Fig. 1. u
With reference to the-drawing and consideringl the principles of design and constructionV yinvolved in the production of the device,
numeral1 indicates a handle having ends respectively designated 2 and 3 secured thereto' bynovel locking means. The Vhandle may obviously be constructed of any suitable material and of Ia diameter and length which will be convenient and adaptable to the hand of the ordinary user. The handle shown, however, is preferably of vmetal and is provided with butt ends 4. The handle. is also preferably of tubular` construction, however,
Y it is to be understood that it may be made tubular adjacent the endsjonly.VV It isalso to be understood thatthe handlemay be tapered from the centertowards ,the ends; or in other words, slightly rounded adjacent thecentral portion thereof, and may be made so as togbe of a specific Weight. The. handle, as shown,A isinternally threaded as indicated at 5.. -A
suitable Acovering6 providing a gripping portion Apreferably of resilient materialmay surround the j handle, if desired, and may obviously bel-made of Yany suitable material andof any design. 'As-shown, the ends of the covering are extended a slight extent beyond the endsof-the handles as indicatedat 6', and thus the, covering serves as a lock Washer tending to hold the variousparts in firm assembled relation.
Considering'the'principles of design and construction oftheV ends 2 `and 3which are secured tojthef-handle, it will benoted that each end is comprised-cf a plurality, of. plates or Adiscs of variousweights, 'l in the present instance, being an.end'weight,.and 8, 9, and A10, otherV weights,
aperture 11 in order that the threaded extension 12. providedfon andj extending from the' end weight 'lmayextend through
theweights8, 9,
*the latter Weights each being provided with an and 10,
witlrthe end13 of the extension 12 threadably engaging the
threads5 of the handle in order to .properly hold al1 of the Weights in Iirrn assembled relation. Obviously, the weights .may be constructed ofany suitable material and may be circular inv shapeor otherwise and'be of any suitable weight..D'Toillustrate,
plates8 and 9 may each weigh two. pounds and the plate Y10, one pound, and thus, itis evident that the weight of the dumb-bell may be increased or decreased as desired. i
The novel locking means for holding the plates, forming the weights, together in assembled relation with respect to the handle as above referred to, includes a threaded;V extension 12. The threaded extension 12 is preferably provided with anenlargement 141which is embedded in a seat l5 provided in` the end plate or weight 7; thus the end plate serves as an operating member, the
end13 of extension 12 of the operating memberf?, being engageable with the
threads5 of the handle, thusV 'making it -possible to vary the weight ofthe dumb-bell byadding or decreasing the Weights, The threaded extension 12 may be of any suitable' construction, however, in the present instance, is in the form of a bolt of which the headthereof is embedded in the end weight 7 in a manner Wherebymanipulation of the member 'Z will correspondingly move the extension 12. It willbe'noted that thelojcking meansthus disclosed is of a novel character, and is concealed from View. The end weight 7 may be of any suitable design, however, is shown with one face convex as indicated at 16.
As above referred to, lone of the objects of my invention is to provide a suitable covering for the ends of the dumb-bell, and with this in View, it will be noted that
Vthe plates8 to l0, inclusive, which form the weights are each encircled at the periphery by a band of
resilient material17, preferably of rubber. I
The end plate operating member 7, as clearly shown, is provided with a covering 18, which'is similar to eachv of the
coverings17, however den viates therefrom, in view of the faetthat itis more or Aless of channel shape in cross-section,
having a Wall or portion suchas, .1.9, engaging the A convex face 16 of the end operatingmember '7,Vand' `the wall or portion 20 thereof extending inwardly between the weights '7 and 8. The wall or portion f' evident that the locking means are concealed from view and that there are noprojections which extend outwardlyl from-the confinesof the ends. Obviously, either of the bands, such as 17, may be provided with an inwardly extending portion Ysimilar to that designated 20 of the
band18, in order to more or less tend to bind the adjacent weights with respectY to each other.
Although the structure above referred to, is embodied in the construction of a dumb-bell, it is to be understood that Vthe same principles may be involved inthe construction of a club.
In View of theforegoing description, it-will be evident that I have` provided a dumb-bell involving novel principles of design and construction, and that the weight thereof may be varied as de'- sired. It is also apparent that I have provided novelV means Vfor locking the various weightsV together; and also a novel covering for the various weights, including the handle, and that one of the coveringsfprovide means tending to serve asa lock washer, and that'the covering for thehandlernot only provides means for exercising Vthehand but maybe of'a character also tending to serveasa Y'Letters Patent is:
l. A device of the kind described including a handle internally threaded and a plurality of weights, a'threaded' extension having ane enlargement at one endand threads provided adjacent the other end of the extension, the Yenlargement of said extension being imbedded in one of said weights in a manner whereby the material of which lthe weight is made entirely surrounds said enlargement, the threaded end of said extension being of a character to extend through the other weightsaV suiiicient distance for the threads of said extension to engage the threads of said handle and hold the weights in assembled relation to the handle,-a covering'for each of-said' Weights and a covering for saidhandle, the covering for the end weight of said plurality of weights.V being of channel shape in cross Section in order to surround the edge and part of the faces of said weight and with a portion of said covering ar- `ranged betweena pair of weights toprovide a lockY washer.
2. A device of the kind described including a handle internally threaded and a plurality Yof weights, a threaded extension having an enlargement at one end and threadsV provided adjacent the other end of the extensiongthe enlargement of said extension being imbedded in onel of said weights in a manner whereby the'material of Which the weight is made entirely surrounds and engages said enlargement, the threaded end of said extension being of a character to extend 15 'through the other weights a` s uflicient distance for` the threads of said extension to engage they each of Said weights and a covering for saidhanrality of weights beingrof channel shape in cross section in order to surround the edge and vpart of the faces of said weight and with a portion of said covering'arranged' between a pair of `weights'A to threads of said handle and hold the weights inY assembledrelation to the handle, a covering for 20 dle, the covering for the end weight ofsaidfplu- Y provide -a lock washer, and the covering for said handleV being extended to' engage one of 'said' Weights-to providea lock Washer'tending to provent movementof the Weight with respect to said f' handle.
3. A device of the kind described comprising an', elongated handle member having a threadedbore` ,atV each end, a member providing a cover, for and projecting beyond the ends of the handle member, a pairof disc weights, a threaded memberV bore at each end, a member providing a coverfforV and projecting slightly beyond the ends ofthe handle member, f a plurality of disc weights mounted on each end of said handle member, the outer weight at each end providing on its inner face an annular projection adjacent its outer 'peik riphery and a coaxial threaded member projecting f vinto` the adjacent threaded bore, the others ofV said weights each having a central aperture through which the adjacent threaded member ex-` tends, said outer weightsv being operable by'rotation thereof toiclampithe adjacent. inner Weights Y between said annular projections and the ladjacent projecting ends of said handle cover.
5. A deviceof the kind described comprising an elongated handle member having a' threaded bore atreachrend, a member providingy a cover for and projectingA slightly beyond' the endsof the handle member, a plurality `of disc weights mounted on each `end of said handle member, the outer weights each-having a channel shaped cover.4 prothereof to clamp` the contiguous weights between" the adjacent flanged edge of'its cover and the adjacent projecting end of said handle cover.
JOHN'M.POSTL.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US676862A US1991520A (en) | 1933-06-21 | 1933-06-21 | Dumbbell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US676862A US1991520A (en) | 1933-06-21 | 1933-06-21 | Dumbbell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1991520A true US1991520A (en) | 1935-02-19 |
Family
ID=24716332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US676862A Expired - Lifetime US1991520A (en) | 1933-06-21 | 1933-06-21 | Dumbbell |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1991520A (en) |
Cited By (44)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2447218A (en) * | 1945-03-09 | 1948-08-17 | Trzesniewski Stanley | Bar bell |
| US2640696A (en) * | 1952-03-26 | 1953-06-02 | Lemieux Adalbert | Dumbbell with adjustable weights |
| US3022073A (en) * | 1959-01-16 | 1962-02-20 | Raphael W Miller | Weight lifting construction |
| US3751031A (en) * | 1969-09-24 | 1973-08-07 | N Yamauchi | Weighted belt type exercising device |
| US4351526A (en) * | 1980-03-05 | 1982-09-28 | Leonard Schwartz | Dumbells |
| US4529197A (en) * | 1983-10-05 | 1985-07-16 | Gogarty Brian J | Dumbbell, adjustable, and locking means |
| US4638994A (en) * | 1984-07-30 | 1987-01-27 | Gogarty Brian J | Quick-bolt locking system |
| US5090693A (en) * | 1991-05-30 | 1992-02-25 | Liang Yung Jen | Dumbbell |
| US5222930A (en) * | 1984-07-20 | 1993-06-29 | Bold Jr Thomas P | Inertial force exercise device having dense body extremities |
| US5286244A (en) * | 1992-01-06 | 1994-02-15 | Safety Sports, Ltd. | Multi-functional hand weight |
| US5346449A (en) * | 1993-06-03 | 1994-09-13 | Schlagel Bruce E | Barbell system with improved locking feature |
| US5464379A (en) * | 1993-04-21 | 1995-11-07 | Zarecky; Victor K. | Variable weight dumbbell |
| US6039678A (en) * | 1998-11-02 | 2000-03-21 | Dawson; Fredric O. | Dumbbell set with quick release plates |
| US6059700A (en) * | 1998-02-03 | 2000-05-09 | Ultima Fitness, Inc. | Locking system for barbells |
| US20030096683A1 (en) * | 2000-02-09 | 2003-05-22 | Fenelon Paul J. | Balanced stackable dumbbell system |
| US6875161B1 (en) * | 2002-04-19 | 2005-04-05 | Weight lifting device | |
| US20050079961A1 (en) * | 2003-10-13 | 2005-04-14 | Dalebout William T. | Weight lifting system with internal cam mechanism |
| US20060035767A1 (en) * | 2003-04-11 | 2006-02-16 | Ira Ekhaus | Adjustable exercise bell |
| US7182716B1 (en) * | 2003-09-19 | 2007-02-27 | Matthew Fredric Dawson | Dumbbell with quick release bolt |
| US7223251B1 (en) * | 2002-08-05 | 2007-05-29 | Cassidy Phillips Peter L | Massage device |
| US20070197354A1 (en) * | 2006-02-18 | 2007-08-23 | Escape Fitness Limited | Exercise device |
| US20070298940A1 (en) * | 2006-06-22 | 2007-12-27 | Karl Anderson | Method & Apparatus For Magnetically Coupling Incremental Weights To Exercise Apparatus |
| US20070298939A1 (en) * | 2006-06-22 | 2007-12-27 | Karl Anderson | Dumbbell and Adaptor With Securable Incremental Weight Plate Feature |
| US20080064575A1 (en) * | 2006-08-02 | 2008-03-13 | Towley Carl K Iii | Selectorized dumbbell having shock absorbing system, weight plates with an elastomer encasement, and a selector comprising a pin with flexible connecting prong (s) |
| US20100075816A1 (en) * | 2006-06-22 | 2010-03-25 | Ace Specialty, Inc. | Method and Apparatus for Magnetically Coupling Incremental Weights to Exercise Apparatus |
| US20110111929A1 (en) * | 2008-07-02 | 2011-05-12 | Allison Michael R | Combination kettle bell and dumbbell |
| US8267841B1 (en) | 2007-06-19 | 2012-09-18 | Allison Michael R | Combination kettle bell and dumbbell |
| DE202016101606U1 (en) * | 2016-03-23 | 2017-06-27 | Mario Schäfer | device |
| US20180125746A1 (en) * | 2016-11-07 | 2018-05-10 | Koka Co., LLC | Portable modular fitness system |
| US10188890B2 (en) | 2013-12-26 | 2019-01-29 | Icon Health & Fitness, Inc. | Magnetic resistance mechanism in a cable machine |
| US10252109B2 (en) | 2016-05-13 | 2019-04-09 | Icon Health & Fitness, Inc. | Weight platform treadmill |
| US10279212B2 (en) | 2013-03-14 | 2019-05-07 | Icon Health & Fitness, Inc. | Strength training apparatus with flywheel and related methods |
| US10293211B2 (en) | 2016-03-18 | 2019-05-21 | Icon Health & Fitness, Inc. | Coordinated weight selection |
| US10426989B2 (en) | 2014-06-09 | 2019-10-01 | Icon Health & Fitness, Inc. | Cable system incorporated into a treadmill |
| US10441840B2 (en) | 2016-03-18 | 2019-10-15 | Icon Health & Fitness, Inc. | Collapsible strength exercise machine |
| US10449416B2 (en) | 2015-08-26 | 2019-10-22 | Icon Health & Fitness, Inc. | Strength exercise mechanisms |
| US10661114B2 (en) | 2016-11-01 | 2020-05-26 | Icon Health & Fitness, Inc. | Body weight lift mechanism on treadmill |
| US10940360B2 (en) | 2015-08-26 | 2021-03-09 | Icon Health & Fitness, Inc. | Strength exercise mechanisms |
| USD952772S1 (en) * | 2021-04-22 | 2022-05-24 | Danni WANG | Adjustable dumbbell |
| US20220280829A1 (en) * | 2021-03-03 | 2022-09-08 | Ricardo Gamboa | Handheld weight exercise system |
| US20220387843A1 (en) * | 2021-06-04 | 2022-12-08 | Harley Pasternak | Modular exercise bar and weight assembly, system and method |
| WO2024144423A1 (en) * | 2022-12-30 | 2024-07-04 | ЗАРЕЦКИЙ, Лев Маркович | Device for fastening weights to exercise equipment |
| USD1043866S1 (en) * | 2023-01-20 | 2024-09-24 | Tracy Anderson Mind And Body, Llc | Weight |
| USD1061753S1 (en) | 2023-01-20 | 2025-02-11 | Tracy Anderson Mind And Body, Llc | Staff |
-
1933
- 1933-06-21 US US676862A patent/US1991520A/en not_active Expired - Lifetime
Cited By (65)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2447218A (en) * | 1945-03-09 | 1948-08-17 | Trzesniewski Stanley | Bar bell |
| US2640696A (en) * | 1952-03-26 | 1953-06-02 | Lemieux Adalbert | Dumbbell with adjustable weights |
| US3022073A (en) * | 1959-01-16 | 1962-02-20 | Raphael W Miller | Weight lifting construction |
| US3751031A (en) * | 1969-09-24 | 1973-08-07 | N Yamauchi | Weighted belt type exercising device |
| US4351526A (en) * | 1980-03-05 | 1982-09-28 | Leonard Schwartz | Dumbells |
| US4529197A (en) * | 1983-10-05 | 1985-07-16 | Gogarty Brian J | Dumbbell, adjustable, and locking means |
| US5222930A (en) * | 1984-07-20 | 1993-06-29 | Bold Jr Thomas P | Inertial force exercise device having dense body extremities |
| US4638994A (en) * | 1984-07-30 | 1987-01-27 | Gogarty Brian J | Quick-bolt locking system |
| US5090693A (en) * | 1991-05-30 | 1992-02-25 | Liang Yung Jen | Dumbbell |
| US5286244A (en) * | 1992-01-06 | 1994-02-15 | Safety Sports, Ltd. | Multi-functional hand weight |
| US5464379A (en) * | 1993-04-21 | 1995-11-07 | Zarecky; Victor K. | Variable weight dumbbell |
| US5346449A (en) * | 1993-06-03 | 1994-09-13 | Schlagel Bruce E | Barbell system with improved locking feature |
| US6059700A (en) * | 1998-02-03 | 2000-05-09 | Ultima Fitness, Inc. | Locking system for barbells |
| US6039678A (en) * | 1998-11-02 | 2000-03-21 | Dawson; Fredric O. | Dumbbell set with quick release plates |
| US20030096683A1 (en) * | 2000-02-09 | 2003-05-22 | Fenelon Paul J. | Balanced stackable dumbbell system |
| US7491155B2 (en) * | 2000-02-09 | 2009-02-17 | Fenelon Paul J | Balanced stackable dumbbell system |
| US6875161B1 (en) * | 2002-04-19 | 2005-04-05 | Weight lifting device | |
| US7223251B1 (en) * | 2002-08-05 | 2007-05-29 | Cassidy Phillips Peter L | Massage device |
| US20060035767A1 (en) * | 2003-04-11 | 2006-02-16 | Ira Ekhaus | Adjustable exercise bell |
| US7052445B2 (en) * | 2003-04-11 | 2006-05-30 | Ira Ekhaus | Adjustable exercise bell |
| US7182716B1 (en) * | 2003-09-19 | 2007-02-27 | Matthew Fredric Dawson | Dumbbell with quick release bolt |
| US20050079961A1 (en) * | 2003-10-13 | 2005-04-14 | Dalebout William T. | Weight lifting system with internal cam mechanism |
| US7025713B2 (en) | 2003-10-13 | 2006-04-11 | Icon Ip, Inc. | Weight lifting system with internal cam mechanism |
| US20070197354A1 (en) * | 2006-02-18 | 2007-08-23 | Escape Fitness Limited | Exercise device |
| US7527582B2 (en) * | 2006-02-18 | 2009-05-05 | Escape Fitness Limited | Exercise device |
| US20070298940A1 (en) * | 2006-06-22 | 2007-12-27 | Karl Anderson | Method & Apparatus For Magnetically Coupling Incremental Weights To Exercise Apparatus |
| US20070298939A1 (en) * | 2006-06-22 | 2007-12-27 | Karl Anderson | Dumbbell and Adaptor With Securable Incremental Weight Plate Feature |
| US8210996B2 (en) | 2006-06-22 | 2012-07-03 | Ace Specialty, Inc. | Method and apparatus for magnetically coupling incremental weights to exercise apparatus |
| US20100075816A1 (en) * | 2006-06-22 | 2010-03-25 | Ace Specialty, Inc. | Method and Apparatus for Magnetically Coupling Incremental Weights to Exercise Apparatus |
| US8123662B2 (en) | 2006-06-22 | 2012-02-28 | Ace Specialty, Inc. | Method and apparatus for magnetically coupling incremental weights to exercise apparatus |
| US7780582B2 (en) | 2006-06-22 | 2010-08-24 | Ace Specialty, Inc. | Method and apparatus for magnetically coupling incremental weights to exercise apparatus |
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