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Publication numberUS3578800 A
Publication typeGrant
Publication dateMay 18, 1971
Filing dateOct 8, 1968
Priority dateOct 13, 1967
Publication numberUS 3578800 A, US 3578800A, US-A-3578800, US3578800 A, US3578800A
InventorsPaolo Dinepi
Original AssigneePaolo Dinepi
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Foldable bicycle-type exercising device
US 3578800 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

United States Patent 72] Inventor Paolo DiNepi Via Crocefisso 6, Milan, Italy [21 Appl. No. 765,894 [22] Filed Oct. 8, 1968 [45] Patented May 18, 1971 [32] Priority Oct. 13, 1967 [3 3 Italy 815,374

[54] FOLDABLE BICYCLE-TYPE EXERCISING DEVICE 7 Claims, 4 Drawing Figs. [52] 11.8. CI 272/73 [51 Int. Cl A63b2l/00, A63b 23/04 [50] Field of Search 272/73 [56] References Cited UNITED STATES PATENTS 2,238,295 4/1941 Snyder 272/73 272/73 3,259,385 7/1966 Boren Assistant Examiner-Richard W. Diaz, J r. Att0rney-Kurt Kelman ABSTRACT: A foldable frame provided with a seat and a handlebar. The lower portion of the frame carries a step-up gear transmission having a pedal-operated drive shaft. The transmission drives a flywheel which is coaxial with the drive shaft and is equipped with a friction brake. A speedometer on the handlebar is operatively connected to the transmission. The foldable frame includes pairs of downwardly convergent frame members and leg members pivotally connected to the frame members, and a pair of transversely spaced straps straddling the frame and leg members. One leg member is rigidly secured to the straps at one end thereof, the other end portions of the straps are provided with longitudinal slots, a pivot V extends through the slots and connects the other leg member and one of the frame members to the straps, and a second pivot connects the other frame member to the straps.

- lFOLDAELlE BICYCLE-TYPE EXERCISING DEVICE This invention relates to new and useful improvements in exercising devices, and in particular the invention concerns itself with a bicycle-type device which is especially suitable for indoor use, as for example in homes, gymnasiums, and the like.

As such, the principal object of the invention is to provide a bicycle-type exercising device which has a foldable frame, capable of being quickly and easily-erected for use and also capable of being readily folded into a compact form, so that the device may be conveniently stored in a small space when it is not in use.

Another important object of the invention is to provide a bicycle-type exercising device having a seat and a handle bar and also having a pedal-operated step-up gear transmission driving a flywheel, the latter being compactly disposed coaxially with the pedal-operated shaft of the transmission. Also, the invention provides a friction brake for the flywheel so that its resistance to rotation may be varied, and a speedometer on the handlebar driven by the transmission. The foldable frame of the device is dependably rigid in its erected position; compact and easily portable when folded; and the device as a whole lends itself to convenient and economical manufacture.

With the foregoing more important objects and features in view and such other objects and features as may become apparent as this specification proceeds, the invention will be understood from the following description taken in conjunction with the accompanying drawings, wherein like characters of reference are used to designate like parts, and wherein:

FIG. I is a side elevational view of the exercising device of the invention in its erected position;

tion;

FIG. 3 is an enlarged, fragmentary sectional view taken in a transverse plane and showing details of the transmission; and

FIG. 4 is a fragmentary side elevational view, taken from the right-hand side of FIG. 3.

Referring now to the accompanying drawings in detail, the bicycle-type exercising device of the invention comprises a foldable frame including a pair of downwardly convergent tubular frame members 1, 2, provided with slidably telescoped tubular extensions 4, 6, respectively. The extension 4 of the member 1 carries a handlebar 3, while the extension 6 of the member 2 carries a seat 5. By sliding the extensions in the respective frame members, the height of the handlebar and/or the seat may be adjusted to suit the user, and releasable locking means Ia, 2a are provided on the frame members I, 2 for locking the extensions 4, 6 in an adjusted position, the locking means being of any suitable conventional type. The lower end portion of the frame member 1 carries a pedaloperated transmission and flywheel assembly designated generally by the reference numeral 7, which will be hereinafter described.

The foldable frame also includes a pair of downwardly divergent leg members 8, 9 which may also be equipped with telescopic extensions l0, 11, respectively, for height adjustment purposes. Moreover, the frame includes a pair of transversely spaced straps 12 which straddle the opposite sides of the frame members 1, 2 and leg members 8, 9, as shown. The straps 12 are connected to the frame member 2 by a pivot 13 and the upper end portion of the leg member 9 is rigidly secured to the adjacent end of the straps.

The other end portions of the straps 12 are provided with longitudinal slots 14 to receive a pivot 15 which extends through the frame member I and also through apertured brackets 16 which are rigidly secured to the upper end portion of the leg member 8. The leg members 8, 9 have bevelled upper ends and when the device is in its erected position as shown in FIG. 1, these bevelled ends supportingly abut intermediate portions of the frame members 1, 2, whereby the erected frame is dependably rigid. The pivots 13, I15 may be in the form of screws provided with suitable nuts 13a, 150, so that upon tightening of these nuts, the frame is positively held in its erected form. In addition, the lower end portion of the FIG. 2 is a side elevational view thereof in its folded posiframe member 1 has rigidly secured thereto a transversely extending tubular sleeve 18 which will be further referred to in connection with the transmission assembly 7. This sleeve is supportingly abutted by the lower end of the frame member 2 under the weight of the occupant of the seat 5, thus further assisting in making the frame dependably rigid in its erected position.

The frame may be quickly and easily folded by simply loosening the nuts 13a, on the pivots 13, I5, whereupon the frame members 1, 2 and the leg members 8, 9 may be drawn together into a substantially parallel relation, as will be apparent from FIG. 2. Also, the frame member extensions 4, 6 and the leg member extensions l0, 11 may be retracted, if desired.

The aforementioned transmission and flywheel assembly 7 will now be described with particular reference to FIGS. 3 and 4. The same comprises a drive shaft 20 which is rotatably journaled in the sleeve 18, the latter being rigidly secured to the lower end portion of the frame member 1 as aforesaid. The ends of the drive shaft 20 are equipped with foot-pedal cranks 2i, 22, so that the shaft may be rotated in the manner of a bicycle by the occupant of the seat 5. A sprocket 23 is secured to the shaft 20 adjacent the crank 22 and is operatively connected by an endless chain 24 to a relatively smaller sprocket 25 on a countershaft 26.

The countershaft 26 is rotatably journaled in the frame member 1 below and in parallel with the drive shaft 20. Another sprocket 27 on the countershaft is connected by an endless chain 28 to a smaller sprocket 29 which is secured to and rotatable with a flywheel 30 on the drive shaft 20 adjacent the crank 21. This provides a compact arrangement wherein the flywheel 30 is coaxial with the drive shaft 20 and the whole gear train is located so that it does not protrude beyond the periphery of the flywheel. Of course, it will be understood that the flywheel 30 and the sprocket 29 are rotatable on the drive shaft 20 independently of the drive shaft rotation, and that when the drive shaft is rotated by actuation of the foot-pedal cranks 21, 22, the step-up gearing will produce a much faster rotation of the flywheel. The inertia of the flywheel is such as to provide the desired exercising effect which can be increased by resisting rotation of the flywheel, as for example, by a frictional brake 31 which may be engaged with the flywheel by any suitable means (not illustrated).

A drive connection 32 of a suitable nature is made from the countershaft 26 through a Bowden cable 33 to a speedometer or speed indicator 34, conveniently mounted on the handlebar 3.

The chain drive 23, 24, 25 of the transmission is protectively enclosed by a circular guard 35 disposed adjacent the footpedal crank 22. On the opposite side, the chain drive 27, 28, 29 is contained within the flanged flywheel 30 and is further protectively enclosed by a circular guard 36.

I claim:

1. A bicycle-type exercising device, comprising in combination a foldable frame including a pair of downwardly convergent frame members and a pair of downwardly divergent leg members pivotally connected to said frame members so that the frame is substantially rigid when erected and so that the frame members and leg members may assume closely spaced substantially parallel positions when the frame is folded, a pair of transversely spaced straps straddling said frame members and leg members, one of the leg members being rigidly secured to said straps at one end of the latter, the other end portions of the straps being provided with longitudinal slots, a pivot element extending through said slots and connecting the other leg member and one of said frame members to the straps, and a second pivot element connecting the other frame member to the straps, a handlebar and a seat provided at the upper ends of the respective frame members, a step-up gear transmission mounted on one of said frame members adjacent its lower end, said transmission including a pedal-operated drive shaft, and a flywheel coaxial with said shaft, said flywheel being driven by said transmission.

2. The device as defined in claim 1 wherein each of said frame members is extensible and retractable and includes slidably telescoped sections. together with means releasably locking said sections in an adjusted position.

3. The device as defined in claim 1 wherein said leg members are provided with bevelled upper ends which supportably abut intermediate portions of the respective frame members when the frame is erected.

4. The device as defined in claim 1 wherein said pedaloperated drive shaft of said transmission is rotatably journaled in said one of said frame members, said transmission also including a countershaft rotatably journaled in said one of the frame members in parallel to said drive shaft, said flywheel being rotatably mounted on the drive shaft, and step-up gearing operatively connecting the drive shaft to said countershaft and said countershaft to said flywheel.

5. The device as defined in claim 4 together with guard plates enclosing said gearing concentrically with said drive shaft.

6. The device as defined in claim 1 together with a friction brake engageable with said flywheel.

7. The device as defined in claim 1 together with a speedometer provided on said handlebar and operatively connected to said transmission.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2238295 *Jul 25, 1940Apr 15, 1941H P Snyder Mfg Company IncExerciser
US3259385 *Feb 27, 1964Jul 5, 1966Ben E BorenPortable exercising device
GB407263A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3664027 *Aug 12, 1970May 23, 1972Schwinn Bicycle CoBicycle frame-size indicator
US3964742 *Oct 16, 1974Jun 22, 1976Guido CarnielliPhysiological active and passive exercising apparatus
US4077626 *Nov 13, 1974Mar 7, 1978Joe Westley NewmanExercising machine
US4577623 *Nov 3, 1983Mar 25, 1986Compagnie Generale De Materiel OrthopediqueSplint mobilizing an upper limb
US4602781 *Mar 23, 1983Jul 29, 1986Allegheny International Exercise Co.Dual action exercise cycle
US4632386 *Jan 30, 1985Dec 30, 1986Allegheny International Exercise Co.Foldable exercise cycle
US4712789 *Apr 10, 1987Dec 15, 1987Schwinn Bicycle CompanyCycle exercisers
US4712790 *Apr 20, 1987Dec 15, 1987Schwinn Bicycle CompanyCycle exerciser
US4809970 *Feb 12, 1988Mar 7, 1989B. H. Holdings LimitedInertia mechanism in gymnastic bicycles or the like
US4955599 *Jan 19, 1989Sep 11, 1990Proform Fitness Products, Inc.Exercise cycle with gear drive
US6039676 *Sep 7, 1999Mar 21, 2000Clive; StevensTraining bike
US6557679Aug 23, 1999May 6, 2003Nautilus, Inc.Free wheel clutch mechanism for bicycle drive train
US6641507Aug 23, 1999Nov 4, 2003Nautilus, Inc.Free wheel clutch mechanism for bicyclic drive train
US6689019Mar 30, 2001Feb 10, 2004Nautilus, Inc.Exercise machine
US7169088Nov 26, 2003Jan 30, 2007Rodgers Jr Robert ECompact variable path exercise apparatus
US7169089Nov 26, 2003Jan 30, 2007Rodgers Jr Robert ECompact variable path exercise apparatus with a relatively long cam surface
US7172531Nov 26, 2003Feb 6, 2007Rodgers Jr Robert EVariable stride exercise apparatus
US7172532Jul 13, 2004Feb 6, 2007Nautilus, Inc.Exercise device tubing
US7175570Mar 6, 2002Feb 13, 2007Nautilus, Inc.Exercise bicycle frame
US7179201Jun 7, 2004Feb 20, 2007Rodgers Jr Robert EVariable stride exercise apparatus
US7201705Nov 25, 2003Apr 10, 2007Rodgers Jr Robert EExercise apparatus with a variable stride system
US7214168Nov 26, 2003May 8, 2007Rodgers Jr Robert EVariable path exercise apparatus
US7226393Jan 17, 2002Jun 5, 2007Nautilus, Inc.Exercise bicycle
US7244217Nov 26, 2003Jul 17, 2007Rodgers Jr Robert EExercise apparatus that allows user varied stride length
US7316632Jun 7, 2004Jan 8, 2008Rodgers Jr Robert EVariable stride exercise apparatus
US7341542Dec 19, 2003Mar 11, 2008Nautilus, Inc.Exercise machine
US7364533Jul 13, 2004Apr 29, 2008Nautilus, Inc.Adjustment assembly for exercise device
US7413530May 24, 2005Aug 19, 2008Nautilus, Inc.Frame for an exercise bicycle
US7488275Mar 6, 2002Feb 10, 2009Nautilus, Inc.Free wheel clutch mechanism for bicycle drive train
US7569001Mar 9, 2001Aug 4, 2009Nautilus, Inc.Free wheel clutch mechanism for bicycle drive train
US7591765Jun 12, 2003Sep 22, 2009Nautilus, Inc.Free wheel clutch mechanism for bicycle drive train
US7731636May 4, 2007Jun 8, 2010Nautilus, Inc.Resistance system for an exercise device
US7771325Jun 4, 2007Aug 10, 2010Nautilus, Inc.Exercise bicycle
US8419597Aug 17, 2010Apr 16, 2013Emily L. CooperSystems and methods for a hill training apparatus for a bicycle trainer
US8764616Apr 4, 2013Jul 1, 2014Pro-Climb, LLCSystems and methods for a hill training apparatus for a bicycle trainer
US20120322625 *Feb 18, 2011Dec 20, 2012Hun Geun ParkHealth bicycle with arm exercise function
US20130260964 *Apr 1, 2013Oct 3, 2013Rexon Industrial Corp., Ltd.Exercise apparatus
US20130260966 *Apr 1, 2013Oct 3, 2013Rexon Industrial Corp., LtdSupport frame for exercise apparatus
US20130260967 *Apr 1, 2013Oct 3, 2013Rexon Industrial Corp., Ltd.Support frame for exercise apparatus
EP0029408A1 *Sep 3, 1980May 27, 1981Paul TerraillonHome cycle for physical training
EP0189654A1 *Dec 5, 1985Aug 6, 1986Allegheny International Exercise Co.Foldable exercise cycle
EP0526411A1 *Jun 4, 1992Feb 3, 1993CARNIELLI S.p.A.Foldable exercise bicycle
WO2007048858A1 *Oct 28, 2005May 3, 2007Exercycle S APedal exercise machine
WO2010118899A1 *Feb 3, 2010Oct 21, 2010Lamiflex S.P.A.Unicycle, particularly of the stationary type, with improved device for transmission between the pedals and the wheel
Classifications
U.S. Classification482/57
International ClassificationA63B21/015, A63B21/22, A63B22/08
Cooperative ClassificationA63B21/225, A63B2210/50, A63B22/08, A63B21/015
European ClassificationA63B22/08