US5183448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foot training machine
Assignee: Greenmaster Industrial Corp
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Filing: 1991-07-26
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Granted: 1993-02-02
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Expires: 2011-07-26
Abstract
Abstract A foot training machine having two pedal assemblies the topmost edge of each of which being constantly maintained at the horizontal position for smooth stepping. The pedal of each pedal assembly has two opposite ends pivoted to two rocker arms which are equal in length. The two opposite ends of the two rocker arms are respectively pivoted to two shaft tubes spaced on the base of the machine. The two rocker arms are freely rotated on the two shaft tubes permitting the pedal to be constantly maintained at the horizontal position while stepping.
Inventors
- 👤 Leao Wang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:12
CPC Classifications
A; A63; A63B; A63B22/00; A63B22/0048; A63B22/0056; A63B2022/0053; A63B23/00; A63B23/035; A63B23/04; A63B23/0405; A63B23/0429; A63B2023/0441; A63B21/00; A63B21/008; A63B21/0083; A63B2225/00; A63B2225/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
298 words
A foot training machine comprising: a base including a laterally extending front bar, a laterally extending rear bar, and a longitudinally extending connecting bar, said front and rear bars being arranged in a substantially parallel, longitudinally spaced relationship, said connecting bar being fixedly secured to and extending between said front and rear bars; and first and second pedal assemblies arranged on opposite sides of said connecting bar for movement between upper and lower operating limit positions during use of said machine, each of said pedal assemblies including: a pedal, a front rocker arm having a first end pivotally connected to said connecting bar and a second end pivotally connected to said pedal, and a rear rocker arm having a first end pivotally connected to said connecting bar and a second end pivotally connected to said pedal, said front and rear rocker arms being substantially equal in length, the distance between the pivotal connections of the front and rear rocker arms to the connecting bar being equal to the distance between the pivotal connections of the front and rear rocker arms to said pedal, the first ends of said front and rear rocker arms being pivotally connected to said connecting bar in a common substantially horizontal plane and the second ends of said front and rear rocker arms being pivotally connected to said pedal in a common substantially horizontal plane such that said pedal is maintained in a substantially horizontal plane throughout its range of movement, the lateral distance between the front rocker arm and said connecting bar being at least greater than the combined lateral distance between the rear rocker arm and said connecting bar and the width of the rear rocker arm such that said pedal can unobstructively move between said upper and lower operating limit positions.
Claim 2
Dependent Claim
298 words
A foot training machine comprising: a base including a laterally extending front bar, a laterally extending rear bar, and a longitudinally extending connecting bar, said front and rear bars being arranged in a substantially parallel, longitudinally spaced relationship, said connecting bar being fixedly secured to and extending between said front and rear bars; and first and second pedal assemblies arranged on opposite sides of said connecting bar for movement between upper and lower operating limit positions during use of said machine, each of said pedal assemblies including: a pedal, a front rocker arm having a first end pivotally connected to said connecting bar and a second end pivotally connected to said pedal, and a rear rocker arm having a first end pivotally connected to said connecting bar and a second end pivotally connected to said pedal, said front and rear rocker arms being substantially equal in length, the distance between the pivotal connections of the front and rear rocker arms to the connecting bar being equal to the distance between the pivotal connections of the front and rear rocker arms to said pedal, the first ends of said front and rear rocker arms being pivotally connected to said connecting bar in a common substantially horizontal plane and the second ends of said front and rear rocker arms being pivotally connected to said pedal in a common substantially horizontal plane such that said pedal is maintained in a substantially horizontal plane throughout its range of movement, the lateral distance between the front rocker arm and said connecting bar being at least greater than the combined lateral distance between the rear rocker arm and said connecting bar and the width of the rear rocker arm such that said pedal can unobstructively move between said upper and lower operating limit positions.
Claim 3
Dependent Claim
24 words
The foot training machine of claim 1, further comprising means for biasing said first and second pedal assemblies toward said upper operating limit position.
Claim 4
Dependent Claim
32 words
The foot training machine of claim 1, further comprising a front, upstanding post fixedly secured to said base and a fluid actuator pivotally secured between said upstanding post and each pedal assembly.
Claim 5
Dependent Claim
77 words
The foot training machine of claim 1, further comprising a foot plate covering at least a portion of said base, said foot plate having first and second stand supports extending from a bottom front portion of said foot plate on opposite sides of said connecting bar, a central cushion projecting from a bottom central portion of said foot plate and engaging said connecting bar, and a curved rear end mounted over said rear bar of said base.
Claim 6
Dependent Claim
51 words
The foot training machine of claim 1, further comprising first and second laterally extending pivot shafts fixedly secured at spaced longitudinal positions to said connecting bar, said front and rear rocker arms of each of said pedal assemblies being pivotally mounted to respective ones of said first and second pivot shafts.
Claim 7
Dependent Claim
51 words
The foot training machine of claim 5, further including an axle sleeve fixedly secured to one end of each of said front rocker arms, each of said axle sleeves being freely rotatably mounted about said first pivot shaft, said axle sleeves laterally spacing said front rocker arms from said connecting bar.
Claim 8
Dependent Claim
51 words
The foot training machine of claim 6, further including an axle sleeve and a thimble fixedly secured to opposite ends of each of said rear rocker arms, said axle sleeves being freely rotatably mounted about said second pivot shaft and said thimbles being pivotally secured to respective ones of said pedals.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-02-02 | 1996-08-03 | 1997-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-02 | 2000-08-03 | 2001-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-02 | 2004-08-03 | 2005-02-02 | $7700.00 | Window Closed / Lapsed |