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Patent US3887216A successfully refreshed from Google Patents.
US3887216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle step assembly
Assignee: Eagle Picher Industries Inc
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Filing: 1974-08-05
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Granted: 1975-06-03
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Expires: 1994-08-05
Abstract
Abstract A flexible step assembly for use with a tractor or other vehicle is constructed from a loop of strong elastomeric material having a horizontal metal step plate secured inside the loop at its lower end and having a horizontal reinforcing plate clamping the upper end of the loop to a rigid horizontal surface on the vehicle. The ends of the plates facing the loop are rounded to reduce abrasion and cutting forces on the loop when the latter is deflected by striking an obstacle during use of the vehicle.
Inventors
- 👤 Gary D Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:21
CPC Classifications
B; B60; B60R; B60R3/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
118 words
A step assembly for use with a vehicle to be operated in rough terrain, said step assembly comprising a. a loop of flexible material, said loop having sufficient strength to support the weight of a man, and sufficient width and strength to resist the horizontal displacement of said step assembly when assembled and subjected to the horizontal component of the Force of a man stepping on said step assembly, b. a step plate attached to the inside portion of the bottom of said loop, c. a clamping plate attached to the inside portion of the top of said loop, and d. means for clamping said clamping plate to a generally downwardly facing mounting surface on the vehicle frame.
Claim 2
Dependent Claim
118 words
A step assembly for use with a vehicle to be operated in rough terrain, said step assembly comprising a. a loop of flexible material, said loop having sufficient strength to support the weight of a man, and sufficient width and strength to resist the horizontal displacement of said step assembly when assembled and subjected to the horizontal component of the Force of a man stepping on said step assembly, b. a step plate attached to the inside portion of the bottom of said loop, c. a clamping plate attached to the inside portion of the top of said loop, and d. means for clamping said clamping plate to a generally downwardly facing mounting surface on the vehicle frame.
Claim 3
Dependent Claim
118 words
A step assembly for use with a vehicle to be operated in rough terrain, said step assembly comprising a. a loop of flexible material, said loop having sufficient strength to support the weight of a man, and sufficient width and strength to resist the horizontal displacement of said step assembly when assembled and subjected to the horizontal component of the Force of a man stepping on said step assembly, b. a step plate attached to the inside portion of the bottom of said loop, c. a clamping plate attached to the inside portion of the top of said loop, and d. means for clamping said clamping plate to a generally downwardly facing mounting surface on the vehicle frame.
Claim 4
Dependent Claim
118 words
A step assembly for use with a vehicle to be operated in rough terrain, said step assembly comprising a. a loop of flexible material, said loop having sufficient strength to support the weight of a man, and sufficient width and strength to resist the horizontal displacement of said step assembly when assembled and subjected to the horizontal component of the Force of a man stepping on said step assembly, b. a step plate attached to the inside portion of the bottom of said loop, c. a clamping plate attached to the inside portion of the top of said loop, and d. means for clamping said clamping plate to a generally downwardly facing mounting surface on the vehicle frame.
Claim 5
Dependent Claim
28 words
A step assembly as recited in claim 1 wherein said loop is formed of a strap having overlapped ends clamped between the clamping plate and the mounting surface.
Claim 6
Dependent Claim
52 words
A step assembly as recited in claim 1 wherein the edges of said step plate and said clamping plate corresponding to the width of said strap are rounded so that only rounded portions of the interior of said loop and said plates engage each other during any deformation of said step assembly.
Claim 7
Dependent Claim
36 words
A step assembly as recited in claim 1 wherein the lower end of the loop is clamped between said step plate and a reinforcing plate which engages the outer surface of the bottom of the loop.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |