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US4350336A Expired / Lapsed US ⏱️ 0.0 years remaining

Exercise treadmill shock-absorbing improvement

Assignee: Precor Inc
•
Filing: 1980-10-14
•
Granted: 1982-09-21
•
Expires: 2000-10-14
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Abstract

Abstract An improvement to an exercise treadmill having longitudinal main frame members which comprises an adjustable shock-absorbing apparatus, featuring a flexible platform supporting a rotatable endless tread-belt, the platform being pivotally connected at one end to the main frame, with the platform resting on a moveable shock absorbing platform support which rests on the longitudinal main frame members and is located forward of the platform's pivotal connection, and which support is moveable fore and aft for adjustment purposes with respect to the longitudinal main frame members so as to act as a shock-absorbing fulcrum for the platform so as to protect the body of the exerciser from the shock usually associated with running or walking on a hard surface.

Inventors

  • 👤 Norris E. Hanford

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 15:39
CPC Classifications
A; A63; A63B; A63B22/00; A63B22/02; A63B22/0207; A63B22/0228; A63B22/0235

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 118 words
An exercise treadmill which comprises: a longitudinal main frame; an endless tread-belt mounted on said frame and having an upwardly exposed operative section; a belt support platform having front and rear ends, said platform underlying said operative section of said belt and being connected proximate its rear end to said frame; and shock-absorbing platform support means on said frame upon which said platform rests at a location forward of said connection, said support means being movable fore and aft on said frame for adjustment purposes so as to act as a shock-absorbing fulcrum for the platform so as to protect the body of the exerciser from the shock usually associated with running or walking on a hard surface.
Claim 2
Dependent Claim 118 words
An exercise treadmill which comprises: a longitudinal main frame; an endless tread-belt mounted on said frame and having an upwardly exposed operative section; a belt support platform having front and rear ends, said platform underlying said operative section of said belt and being connected proximate its rear end to said frame; and shock-absorbing platform support means on said frame upon which said platform rests at a location forward of said connection, said support means being movable fore and aft on said frame for adjustment purposes so as to act as a shock-absorbing fulcrum for the platform so as to protect the body of the exerciser from the shock usually associated with running or walking on a hard surface.
Claim 3
Dependent Claim 15 words
An exercise treadmill as defined in claim 1, wherein said connection is a hinged connection.
Claim 4
Dependent Claim 18 words
An exercise treadmill as defined in either of claims 1 or 2, wherein said platform is longitudinally flexible.

References Cited (Backward Citations)

US2239076A Cited
US2251766A Cited
US2812180A Cited
US2996295A Cited
FR1271191A Cited
US3319767A Cited
US3501140A Cited
US3590980A Cited
US3814420A Cited
US3870297A Cited
SU546523A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1985-09-20 1986-03-22 1986-09-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1989-09-20 1990-03-22 1990-09-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1993-09-20 1994-03-22 1994-09-21 $7700.00 Window Closed / Lapsed

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