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US4900012A Expired / Lapsed US ⏱️ 0.0 years remaining

Leg exercising system

Assignee: Individual
•
Filing: 1988-12-12
•
Granted: 1990-02-13
•
Expires: 2008-12-12
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Abstract

Abstract This invention relates to a leg exercising system which includes a first pair of tubular members having a pair of handles secured to respective ends thereof. A second pair of tubular members are connected to an upper section of the first pair of tubular members. Additionally, there is included a pair of tubular rods which extend in parallel directions each with respect to the other and are displaced from each other. The pair of tubular rods are mounted between respective tubular members of the second pair of tubular members. A first and second pair of I-shaped sleeve members are slidingly engageable on each of the tubular members and tubular rods. A first and second pair of helical spring members are mounted on each of the tubular members and on each of the tubular rods with all of the helical spring members being sandwiched between a base support member and respective I-shaped sleeve members. A pair of connecting rods are respectively secured on opposing ends to an I-shaped sleeve member with a pair of pedals fixedly secured on each of the pair of connecting rods wherein a user may stand on the pedals and reciprocally displace the pedal members.

Inventors

  • 👤 Yeh H. Fu

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 23:26
CPC Classifications
A; A63; A63B; A63B23/00; A63B23/035; A63B23/03516; A63B23/03533; A63B22/00; A63B22/20; A63B22/201; A63B22/205; A63B22/0025; A63B2022/0038; A63B21/00; A63B21/02; A63B21/05

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 240 words
A leg exercising system comprising: a base support member; a first pair of tubular members having a pair of handles secured to respective upper ends of said first pair of said tubular members; a second pair of tubular members secured to an upper section of said first pair of tubular members, said second pair of tubular members extending in a parallel direction and displaced each from the other; a pair of parallel displaced tubular rods mounted between said second pair of tubular members; a first pair of I-shaped sleeve members slidingly engageable respectively on each of said second pair of tubular members; a second pair of I-shaped sleeve members slidingly engageable respectively on each of said pair of tubular rods; a first pair of helical spring members respectively mounted on each of said second pair of tubular members between said base support member and respective I-shaped sleeve members; a second pair of helical spring members respectively mounted on each of said second pair of tubular rods between said base support member and respective I-shaped sleeve members; a pair of connecting rods respectively secured on opposing ends to an I-shaped sleeve on one of said second pair of tubular members and and I-shaped sleeve on one of said pair of tubular rods; and a pair of pedals fixedly secured on each of said pair of connecting rods respectively, whereby a user may stand on said pedals and produce a reciprocating displacement.
Claim 2
Dependent Claim 240 words
A leg exercising system comprising: a base support member; a first pair of tubular members having a pair of handles secured to respective upper ends of said first pair of said tubular members; a second pair of tubular members secured to an upper section of said first pair of tubular members, said second pair of tubular members extending in a parallel direction and displaced each from the other; a pair of parallel displaced tubular rods mounted between said second pair of tubular members; a first pair of I-shaped sleeve members slidingly engageable respectively on each of said second pair of tubular members; a second pair of I-shaped sleeve members slidingly engageable respectively on each of said pair of tubular rods; a first pair of helical spring members respectively mounted on each of said second pair of tubular members between said base support member and respective I-shaped sleeve members; a second pair of helical spring members respectively mounted on each of said second pair of tubular rods between said base support member and respective I-shaped sleeve members; a pair of connecting rods respectively secured on opposing ends to an I-shaped sleeve on one of said second pair of tubular members and and I-shaped sleeve on one of said pair of tubular rods; and a pair of pedals fixedly secured on each of said pair of connecting rods respectively, whereby a user may stand on said pedals and produce a reciprocating displacement.

References Cited (Backward Citations)

US829754A Cited
US3628791A Cited
US4775149A Cited
US4645197A Cited
US4708338A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-02-12 1993-08-14 1994-02-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-02-12 1997-08-14 1998-02-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-02-12 2001-08-14 2002-02-13 $7700.00 Window Closed / Lapsed

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