|Publication number||US3741540 A|
|Publication date||Jun 26, 1973|
|Filing date||Jan 3, 1972|
|Priority date||Oct 25, 1971|
|Publication number||US 3741540 A, US 3741540A, US-A-3741540, US3741540 A, US3741540A|
|Original Assignee||Y Shimizu|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (5), Referenced by (49), Classifications (11)|
|External Links: USPTO, USPTO Assignment, Espacenet|
United States Patent 1191 Shintizu June 26, 1973  NETHER LIMBS TRAINING IMPLEMENT 3,297,320 1/1967 Benedetto 272/57 D  Inventor: Yasuhiro Shimizu, No. 1072 Shimolshihara, ChOflI-Shi, Tokyo, 2,760,774 8/1956 Perez 272/83 R x Japan  Filed: Jan. 3, 1972 Primary Examiner-Richard C. Pinkham Assistant Examiner-Willaim R. Browne ] Appl' 214558 Att0rneyEliot S. Gerber  Foreign Application Priority Data I  ABSTRACT Oct. 25, 1971 Japan ..46/98l03 Oct. 25, 1971 Japan ..46/98l02 A "ether "ammg Implement havmg having formed on its surface a plurality of protuber- 52 us. c1. 2.72/83 R, 272/83 A mes, the being jointed to a base block so 51 Int. Cl A63b 23/04 that the fodthoard is swihgahle "P springs are  Field of Search 272/83 R, 82, 68, disposed between the foothohrd and base hlhck to P I I 27'2/67, 124/4 vide a force acting to push up one side of each of the Y footboards. One footboard has a spring mounted un-  References Cited derneath that forces a steel ball into grooves on the UNITED STATES PATENTS shaft supporting the footboards. 3,295,847
1/1967 Matt 272/83 R l Claim, 7 Drawing Figures H PATENIEnwnzs ma INVENTOR.
V/ M m w 5/.A my H. U L vrmfl NETIIER LIMBS TRAINING IMPLEMENT DETAILED DESCRIPTION OF THE INVENTION However, for many persons, it is very difficult to find the opportunity to take such a long-distance walk or run every day. Rope skipping or the use of a bicycle pedal-chain type implement is also effective for hardening the legs. But the former requires a relatively wide space for use of it, while the latter is expensive.
The primary object of the present invention is to provide a nether limbs training implement which can be conveniently used in homes and which is also relatively inexpensive to manufacture.
. The other objects and features of the present invention will become apparent from the following description of some preferred'embodiments of the invention taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a general perspective view of a nether limbs training implement embodying the present invention;
FIG. 2 is a side sectional view of the implement of FIG. 1, showing a manner of use of the device;
FIGS. 3 and 4 are persepctive views of the implements of FIG. 1 with different forms of toe holding means; i
FIGS. 5 and 6 are perspective views showing other embodiments of the present invention, with parts broken away in FIG. 6i and FIG. 7 is a front view of a compound type nether limbs training implement according to the present invention.
The nether limbs training implement of the present invention comprises essentially a flat base block 1, a footboard 2 formed with a plurality of protuberances 3 on the surface thereof, joining metal fittings 4 for pivotally securing said footboard 2 to said base block 1, and spring means 5 adapted to act so as to push up said footboard 3 relative to said base block.
Base block 1 may be of a flat plate-like configuration as shown in FIGS. 1 to 5, or may be a frame-like structure as shown in FIG. 6.0n the upper surface of said base block 1 are provided buffer elements 8 made of rubber or the like adapted to keep footboard 2 from directly hitting against base block 1.
The protuberances 3 on the top surface of footboard 2 are designed to provide a slip preventative for the sole of the user's foot placed thereon and to give a stimulus to the foot sole to promote its blood circulation. It is preferred to raise the protuberances of the portion corresponding to the plantar arch in the foot sole as best shown in FIG. 2. These protuberances 3 may be pieces shaped from relatively soft synthetic resin or other like material separately from footboard 2, said pieces being bonded to the surface of footboard 2. It is also possible to form such protuberances by engraving footboard 2 itself.
Joining fittings 4 may be provided at the end junction between base block I and footboard 2 as shown in FIGS. 1 to 4 to allow said footboard 2 to make an upand-down swining motion like a hinge, or otherwise they may be provided at the middle portions of both base block I and footboard 2 as shown in FIGS. 5 and 6 so as to make said footboard 2 movable up and down in the manner of a seesaw.
Spring means 5 may be suitably selected from coiled compression springs, coiled torsion springs, leaf springs and volute springs.
If need be, there may be provided on footboard 2 a suitable toe holding means such as covering 6 as shown in FIG. 3 or a thong 7 as shown in FIG. 4.
Now, the operation of the present implement is described. The user puts his foot on footboard 2 such that the toe portion of his foot is positioned on the pivoted side of the footboard and the heel portion on the free end side as shown by chain line in FIG. 2. With this foot positioning completed, the user makes a stepping motion by applying his body weight to the toe portion and to the heel portion alternately, whereby the open end side of footboard 2 will be brought into a closed condition relative to base block 1 when the body weight of the user is loaded on said end side, and when the load is transferred toward the toe portion; that is, when the user stands on tiptoe, said footboard 2 is swung up about the pivoted end by the stretching action of spring means 5. In this manner, said footbard 2 is allowed to make repetitive up and down motions. These forcible repetitive up and down motions of footboard 2 compel the users ankle to exercise repetitive bending and stretching motions. Such repetitive bending and stretching motions go a long way to harden various nether limb muscles such as Achilles tendon, side abdominal muscles, femoral quadriceps, femoral biceps, etc. Also, such foot motion causes corresponding movements of the upper half of the body, with such motion propagating from the backbone to the shoulder and then to the neck portion, and thus virtually the entire body of the user is caused to make swinging motion. Further, a plurality of protuberances 3 provided on footboard 2 serve to prevent skidding of the users foot sole and also give moderate stimulus thereto to promote blood circulation.
Described in the above is a nether limbs training implernent of a simple structure designed for use for one foot, but it is also possible to make a complex structure where the users both feet are subjected to training exercise. FIG. 7 shows an example of such complex structure where an elongated stem-like bar 9 formed with several circumferential click grooves 10 is journalled in joint fittings 4, and a steel ball 12 adapted to fit in one of said grooves is provided so that it is elastically pressed by a spring 11 positioned in a spring housing element 13 provided on the underside of footboard 2. Now, if footboard 2 is pushed laterally along the lengthwise direction of said bar 9, steel ball 12 is forced to ride over the click groove 10, in which it has been fitted, against the force of spring 11 and falls into the adjoining click groove. In this manner, the distance between the adjoining footboards 2,2 can be adjusted in a step-by-step manner according to the desirable distance of the user's foot.
l. A nether limbs training implement comprising a base block, a first footboard provided with a plurality of protuberances on the surface thereof, a joining metal fitting which pivotally joins said first footboard to said board, an elongated stem-like bar formed with several circumferential grooves which is journalled in one of said joint fittings of said respective footboards, a spring housing element positioned on the underside of one of said footboards, a spring disposed in said spring housing, and a steel ball fittable in one of said grooves and pressed by said spring.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US735319 *||May 5, 1902||Aug 4, 1903||Albert William Urwick||Exercising apparatus.|
|US2146156 *||Oct 15, 1937||Feb 7, 1939||Miller John R||Catapult game or toy|
|US2760774 *||Apr 1, 1952||Aug 28, 1956||Willy M Perez||Foot exerciser|
|US3295847 *||Jul 7, 1964||Jan 3, 1967||Matt Sr Albert R||Exercising device|
|US3297320 *||Sep 10, 1963||Jan 10, 1967||Anarel Inc||Device for stretch exercising muscles|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3814420 *||Apr 9, 1973||Jun 4, 1974||J Encke||Exercise device|
|US3942791 *||Aug 26, 1974||Mar 9, 1976||Dawson John D||Twin pedal energizer|
|US4111416 *||Jun 6, 1977||Sep 5, 1978||Jinotti Walter J||Exerciser|
|US4279415 *||Jun 29, 1979||Jul 21, 1981||Sam Katz||Exercising device|
|US4422635 *||Jan 27, 1982||Dec 27, 1983||Herod James V||Portable multiple use exerciser|
|US4502680 *||Dec 23, 1982||Mar 5, 1985||Blum Alvin S||Foot exerciser|
|US4573678 *||Jun 2, 1983||Mar 4, 1986||Steve Lamb||Lower extremity muscle conditioner device|
|US4776586 *||Jul 20, 1987||Oct 11, 1988||Hardee Kelly D||Stress relieving and safety device|
|US4795148 *||Apr 3, 1987||Jan 3, 1989||Avvari Rangaswamy||Combination of antistasis devices|
|US4822039 *||Feb 5, 1988||Apr 18, 1989||Gonzales Charles B||Pivoting leg and arm exercise device|
|US4921243 *||Oct 7, 1988||May 1, 1990||Ulrich Weidmann||Motion apparatus|
|US5178596 *||Dec 13, 1991||Jan 12, 1993||Mcintire Nora L||Exercise apparatus|
|US5186700 *||Aug 27, 1992||Feb 16, 1993||Lee Wang Industry Ltd.||Pedaling exercise device|
|US5284465 *||Jan 28, 1993||Feb 8, 1994||Homan Jr Paul T||Apparatus for use in doing squat exercises|
|US5433684 *||May 2, 1994||Jul 18, 1995||Carrillo; Adrian P.||Calf workout devices|
|US5558606 *||Jul 7, 1994||Sep 24, 1996||Poncini; Richard D.||Full contraction calf muscle exerciser|
|US5851166 *||Jul 31, 1995||Dec 22, 1998||Bernardson; Peter S.||Lower extremity rehabilitation and toning exercise apparatus and method|
|US6217488 *||Dec 22, 1998||Apr 17, 2001||Peter S. Bernardson||Lower extremity rehabilitation and toning exercise apparatus method|
|US6569213 *||Nov 11, 1999||May 27, 2003||Stepit System Ab||Orthopaedic pedal|
|US6761666 *||Sep 6, 2002||Jul 13, 2004||Energy Star Co., Ltd.||Reciprocal device having sensing feature|
|US7097593||Aug 11, 2003||Aug 29, 2006||Nautilus, Inc.||Combination of treadmill and stair climbing machine|
|US7455626||Dec 31, 2001||Nov 25, 2008||Nautilus, Inc.||Treadmill|
|US7544153||Aug 8, 2006||Jun 9, 2009||Nautilus, Inc.||Treadmill|
|US7553260||Feb 26, 2004||Jun 30, 2009||Nautilus, Inc.||Exercise device with treadles|
|US7771327 *||Apr 2, 2009||Aug 10, 2010||Terry Reams||Exercise device with footboards having tubular support|
|US7794367 *||Mar 8, 2006||Sep 14, 2010||Progressive Health Innovations Incorporated||Foot exerciser and associated methods|
|US7883451 *||Mar 29, 2007||Feb 8, 2011||Treadwell Corporation||Methods of applying treadle stimulus|
|US8360940||Nov 16, 2010||Jan 29, 2013||Rk Inventions, Llc||Lower leg and foot exercise device|
|US9132308||Dec 26, 2012||Sep 15, 2015||Rk Inventions, Llc||Lower leg and foot exercise device|
|US9282786||Aug 21, 2009||Mar 15, 2016||Gerrard Farrell||Foot exercise device|
|US20030036462 *||Oct 29, 2001||Feb 20, 2003||Sundaram Ravikumar||Powered antithrombotic foot mobility device|
|US20040048721 *||Sep 6, 2002||Mar 11, 2004||Aileen Chou||Reciprocal device having sensing feature|
|US20040171971 *||Dec 12, 2003||Sep 2, 2004||Arvik Enterprises, Llc||Powered antithrombotic foot mobility device with therapeutic massage|
|US20040192514 *||Feb 26, 2004||Sep 30, 2004||Nautilus, Inc.||Exercise device with treadles|
|US20050272563 *||May 22, 2004||Dec 8, 2005||Liang Yung J||Lower muscle training device|
|US20070037672 *||Jul 24, 2006||Feb 15, 2007||Eiji Nakanishi||Toe exercise apparatus|
|US20070243979 *||Mar 29, 2007||Oct 18, 2007||Hand Richard A||Foot and leg exercising device providing passive motion benefits|
|US20090270231 *||Mar 8, 2006||Oct 29, 2009||Progressive Health Innovations Incorporated||Foot exerciser and associated methods|
|US20110124473 *||Nov 16, 2010||May 26, 2011||Ryan Michael Kole||Lower leg and foot exercise device|
|US20110224049 *||Aug 21, 2009||Sep 15, 2011||Gerrard Farrell||Foot exercise device|
|US20150257965 *||Nov 8, 2013||Sep 17, 2015||Emanuele Simeone||Posture rehabilitation apparatus|
|USRE42698||Oct 8, 2004||Sep 13, 2011||Nautilus, Inc.||Treadmill having dual treads for stepping exercises|
|EP0073744A1 *||Sep 1, 1982||Mar 9, 1983||Ernst Fischer||Medical and sporting training apparatus for the joints, the heart and the blood circulation|
|EP0277266A1 *||Jun 6, 1987||Aug 10, 1988||A. Bösl Firma||Training apparatus for exercising the feet and/or the legs|
|EP0294581A1 *||Apr 28, 1988||Dec 14, 1988||Firma A. Bösl||Gymnastic apparatus for leg and/or foot training|
|EP0311558A2 *||Sep 20, 1988||Apr 12, 1989||Ulrich Weidmann||Exercising apparatus|
|EP0311558A3 *||Sep 20, 1988||Dec 27, 1989||Ulrich Weidmann||Exercising apparatus|
|WO1992018205A1 *||Jun 28, 1991||Oct 29, 1992||Hanover Holdings (Australia) Pty. Ltd.||Exercise apparatus|
|WO2004078273A1 *||Mar 4, 2004||Sep 16, 2004||Colin Laidlaw||Exercise apparatus|
|U.S. Classification||482/80, 482/128|
|Cooperative Classification||A63B2022/0038, A63B21/05, A63B21/023, A63B23/0429, A63B22/0056, A63B23/085|
|European Classification||A63B22/00P6, A63B23/08B|