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Publication numberUS3482835 A
Publication typeGrant
Publication dateDec 9, 1969
Filing dateFeb 21, 1968
Priority dateFeb 21, 1968
Publication numberUS 3482835 A, US 3482835A, US-A-3482835, US3482835 A, US3482835A
InventorsRussell R Dean
Original AssigneeRussell R Dean
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Barbell with eccentrically weighted weights
US 3482835 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

R. R. DEAN 3,482,835


RUSSELL R. DEA/V" lNVENTOR United States Patent 3,482,835 BARBELL WITH ECCENTRICALLY WEIGHTED WEIGHTS Russell R. Dean, 3012 Madison Ave., San Diego, Calif. 92116 Filed Feb. 21, 1968, Ser. No. 707,156 Int. Cl. A63b 13/00 U.S. Cl. 272-84 1 Claim ABSTRACT OF THE DISCLOSURE A dumbbell or barbell with generally conventional appearance and means for manual gripping, provided however, with novel identical, uniformly rotatable unbalanced weights. Exercise is achieved by anatomically resisting the centrifugal force resulting when the weights are caused to spin.

BACKGROUND OF THE INVENTION Traditionally, dumbbells and barbells have consisted of a bar or handle connecting two spheres or discs forming a weight used for calisthenic exercise. There have been some changes in their design and in the materials from which they are made, but since their inception there has been no significant advancement in their construction to improve or add to the manner in which they are used. Their use is generally regarded as monotonous work, undertaken only by those motivated by a strong desire for muscular development or a state of good health. Conventional dumbbells provide no entertainment value. They serve only as weights and the benefit to the user results from inertia and gravity.

SUMMARY My improved construction of dumbbells and barbells brings centrifugal force into play. This is accomplished by constructing them in a manner to permit the weights to revolve. The weights are firmly attached to a shaft running through the handle which is provided with bearings so that the shaft may turn freely and the weights may rotate in unison. Additional weight is added to a segment of each weight so that by appropriate movement, the user can induce a rotating motion in the weights. The centrifugal force of the weights ofi'ers resistance, or fight to the grip of the user. Use of this device, which might aptly be called a rollbell, necessitates a degree of coordination between the movements of the user and the movement of the spinning weights. A definite entertainment value results.

The rollbell does not have to be as heavy as the ordinary dumbbell to provide the same amount of exercise. For this reason and the fact that it possesses some entertainment value, it is felt that its appeal and use will be much wider than that of the dumbbell. A therapeutic value is indicated. It can easily be used by wheelchair or even bed patients. Since its use requires coordination, it may serve to overcome atrophy during convalescence.

BRIEF DESCRIPTION OF THE DRAWING In the drawings forming a part he'reof:

FIGURE 1 is an end view of the device;

FIGURE 2 is a cross sectional view of a weight in the preferred form of my invention;

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings wherein like numerals repre- 1611f like parts throughout the numeral 1 indicates a weight of a dumbbell or barbell exerciser. It is preferably disked shaped. A segment 3 thereof has a greater mass than other portions 2 thereof. See extra weighted portion 3 of FIGURE 2. Uniform weights, afiixed oif center, on the shaft may be used with weights of uniform density to obtain the same result.

The same desired effect may be accomplished by a cavity 11 filled with a dense substance 12 as shown in FIGURE 6. For example, if item 1 is formed of plastic, substance 12 may be lead or another common heavy metal. Such modification may have cover plate 9 with pin 10 securing the plate to weight 1. The upper extremity may be provided with set screw 5 to secure the weight to shaft 6. Collar 4 may be secured to the weight for threaded engagement with the screw. As an alternative, a molded plastic member 13 as illustrated in FIGURES 7 and 8 may be secured to the weight. In such arrangement recess 15 surrounds the end of the shaft and slot 14 is provided with angled sides which abut the hexagonal sides of common nut 17. In such modification, screw 5 passes through slot 16 for threaded engagement with the nut 17 resting in slot 14. Expensive threading is thusly avoided. Slot for screw 5 may be positioned on side opposite that of slot 14. Slot 14 may be made from side opposite side adjacent to weight, instead as shown in FIGURE'7.

Other arrangements for securing the weights to the shaft may obviously come to mind. For instance, plate 9 may be bent away from the weight in the area of the shaft, at right angles to the Weight. A threaded orifice on the surface of the portion parallel to the shaft, may engage screw 5 to hold the shaft and weight in a bracketed unison.

Referring now to FIGURE 3, attention is directed to handle 8. Such handle resembles conventional dumbbell and barbell handles in appearance. However, my novel handle is tubular instead of solid in construction. At each end thereof bearings 7 are operatively monuted on shaft 6.

Ball bearing races or other arrangements may be used.

It is to be understood that one skilled in the art may resort to modifications and changes in the foregoing description which will fall within the scope of the subjoined claim.

I claim:

1. A barbe'll exerciser comprising a plurality of weights, each of said weights having an axis centrally thereof and a mass which is eccentric relative to said axis, a straight bar connected firmly to each weight in alignment with said axis, a tubular bar mounted between the weights on the bar connecting them so that the connecting bar may rotate freely therein, the tubular bar being of appropriate length to permit convenient grasping by the hand or hands of the user, the combined mass of said bar and Weights being such as to enable lifting thereof by a person exercising therewith.

. 4 References Cited UNITED STATES PATENTS 1/1912 Koch 27284 8/1948 Trzesniewski 27284 RICHARD C. PINKHAM, Primary Examiner WILLIAM R. BROWNE, Assistant Examiner

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1013782 *Jun 29, 1911Jan 2, 1912 Mechanical vibrator.
US2447218 *Mar 9, 1945Aug 17, 1948Trzesniewski StanleyBar bell
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3901503 *May 14, 1974Aug 26, 1975Mega Product U VerpackungsentwWeighted muscle exerciser
US4703928 *Jan 28, 1987Nov 3, 1987Gyro-Flex CorporationPrecessional exercising device
US4756526 *Feb 19, 1986Jul 12, 1988Progressive Health And FitnessExercise device
US4775147 *Jul 11, 1985Oct 4, 1988Bold Jr Thomas PInertial force exercise device having three independent rotational inertia systems
US4880229 *Mar 31, 1988Nov 14, 1989Progressive Health & FitnessWeight plate for exercise device
US4900017 *Jul 20, 1984Feb 13, 1990Bold Jr Thomas PInertial force, accommodating resistance exercise device and method
US5222930 *Apr 15, 1991Jun 29, 1993Bold Jr Thomas PInertial force exercise device having dense body extremities
US5674162 *Jun 7, 1995Oct 7, 1997Ellingson; Richard L.Biomechanical stabilizer apparatus and methods for strengthening unstable joints and improving muscle coordination
US5871423 *Sep 30, 1997Feb 16, 1999Pruchnik; ZbigniewGyroscopic weight training devices
US6099444 *Jul 23, 1998Aug 8, 2000Domenge; Alberto G.Inertial exerciser
US6179758Jan 7, 2000Jan 30, 2001Alberto G. DomengeInertial exerciser
US6401556Jun 23, 1999Jun 11, 2002Peter Winston HamadyPrecessional device and method thereof
US6488613Nov 14, 2000Dec 3, 2002Alberto G. DomengeInertial exerciser device, method of assembly, and method of exercising therewith
US6500102Feb 22, 2000Dec 31, 2002Alberto G. DomengeInertial exerciser device and method
US6629908Mar 15, 2001Oct 7, 2003Peter Winston HamadyPrecessional apparatus and method thereof
US6746380Jan 11, 2001Jun 8, 2004Usa Sports, Inc.Weight plate
US6776742Nov 29, 2001Aug 17, 2004Alberto G. DomengeHandheld exerciser and amusement device, method of exercising therewith
US6837833 *Oct 3, 2002Jan 4, 2005Miles ElledgeSpecialty weight training apparatus and method
US7175573 *May 2, 2005Feb 13, 2007Chin-Chen HuangExercising device having multiple functions
US7181987May 2, 2003Feb 27, 2007Peter Winston HamadyPrecessional device and method
US7198591Mar 18, 2005Apr 3, 2007Usa Sports, Inc.Weight plate for interlocking and weight adjustment
US7300389Jun 7, 2006Nov 27, 2007Usa Sports, Inc.Weight plate
US7451667Oct 14, 2006Nov 18, 2008Peter Winston HamadyPrecessional device and method
US7517305Mar 9, 2007Apr 14, 2009Usa Sports, Inc.Weight plate for interlocking and weight adjustment
US7704196Oct 30, 2007Apr 27, 2010Usa Sports, Inc.Weight plate
US7828702Sep 10, 2004Nov 9, 2010Usa Sports, Inc.Weight plate
US7854177May 22, 2007Dec 21, 2010Peter Winston HamadyPrecessional device and method
US8118717 *Jan 17, 2011Feb 21, 2012Shu-Chiung Liao LaiDumbbell with rotatable weights
US8241189 *Oct 5, 2009Aug 14, 2012Nobuaki KanaokaDumbbell
US8262546Sep 16, 2007Sep 11, 2012Charles Mark LashinskeInertial weight for physical conditioning
US9155930 *Aug 1, 2013Oct 13, 2015Daniel AdkinsKinetic dumbbell
US9314663 *Feb 27, 2014Apr 19, 2016Healthcare International, Inc.Alternative driving device and sitting-type exercise machine having the alternate driving device
US20040067826 *Oct 3, 2002Apr 8, 2004Miles ElledgeSpecialty weight training apparatus and method
US20040216538 *May 2, 2003Nov 4, 2004Hamady Peter WinstonPrecessional device and method
US20060229172 *Jun 7, 2006Oct 12, 2006Usa Sports, Inc.Weight Plate
US20070004558 *Jun 28, 2006Jan 4, 2007Vibrogrip AbVibration unit
US20070142188 *Feb 26, 2007Jun 21, 2007Usa Sports, Inc.Method of manufacturing a weight plate for interlocking and weight adjustment
US20070155593 *Mar 9, 2007Jul 5, 2007Usa Sports, Inc.Weight Plate for Interlocking and Weight Adjustment
US20070298942 *May 22, 2007Dec 27, 2007Hamady Peter WPrecessional device with secondary portion
US20100087297 *Oct 5, 2009Apr 8, 2010Nobuaki KanaokaDumbbell
US20120295774 *May 19, 2011Nov 22, 2012Icon Ip, Inc.Vibrating weight bar
US20130274077 *Oct 28, 2010Oct 17, 2013Ilan GreenbergMotion mechanism in a weight device
US20150038303 *Aug 1, 2013Feb 5, 2015Daniel AdkinsKinetic Dumbbell
US20150238804 *Feb 27, 2014Aug 27, 2015Healthcare International, Inc.Alternative driving device and sitting-type exercise machine having the alternate driving device
USD667902Apr 21, 2009Sep 25, 2012Miles Justin ElledgeUnbalanced barbell weight
WO1986007273A1 *Jun 3, 1985Dec 18, 1986Robert BroussardPyramid weight plate exercising apparatus
WO2011066688A1 *Dec 4, 2009Jun 9, 2011上海体育学院Dumbbell provided with adjustable inertial resistance load
WO2011113125A1 *Mar 11, 2011Sep 22, 2011Takashi NishimuraEncapsulated dumbbell for gymnastics
U.S. Classification482/108, 482/110
International ClassificationA63B21/06
Cooperative ClassificationA63B21/0608, A63B21/1496, A63B21/22, A63B21/0726, A63B21/0724
European ClassificationA63B21/072D, A63B21/06B, A63B21/14M8, A63B21/22, A63B21/072B