Patent US3708197A successfully refreshed from Google Patents.
US3708197A
Expired / Lapsed
US
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Truck hoist cradle
Assignee: Individual
•
Filing: 1971-08-16
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Granted: 1973-01-02
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Expires: 1991-08-16
Abstract
Abstract A pair of end members are hinged to wheel well and plates and hinged ramps extend across the ends of the wheel well members. Chains or cables extend between said members and the ramps to raise the end members vertically and the ramps upwardly at an angle to the floor when the hoist is raised. The chains permit the end members and the ramp to lie flat on the floor when the hoist is in the lowermost position.
Inventors
- 👤 K Rowan
- 👤 L Rowan
- 👤 D Rowan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:19
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/12; B66C1/20; Y; Y10; Y10S; Y10S294/00; Y10S294/904
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
94 words
A truck hoist cradle comprising in combination a pair of transversely extending ramps, a plurality of spaced apart cross members, said ramps being hingedly secured to the ends of said cross members, said ramps and said cross members defining a pair of wheel receiving wells, end components secured to the outermost of said cross members, and linkage means extending between said ramps and said end components and cooperating to raise said ramps when said cradle is hoisted and to lower said ramps when said cradle is in the lowermost position upon a supporting surface.
Claim 2
Dependent Claim
94 words
A truck hoist cradle comprising in combination a pair of transversely extending ramps, a plurality of spaced apart cross members, said ramps being hingedly secured to the ends of said cross members, said ramps and said cross members defining a pair of wheel receiving wells, end components secured to the outermost of said cross members, and linkage means extending between said ramps and said end components and cooperating to raise said ramps when said cradle is hoisted and to lower said ramps when said cradle is in the lowermost position upon a supporting surface.
Claim 3
Dependent Claim
41 words
The cradle according to claim 1 in which the connection between said end components and said outermost cross members is hinged whereby said end components also lie flat when said hoist cradle is in the lowermost position upon a supporting surface.
Claim 4
Dependent Claim
59 words
The hoist cradle according to claim 1 in which said end components comprise a main attaching plate, and a hoist plate slideable within limits, with respect to said main attaching plate, whereby said ramps are raised by said linkage prior to said cradle being hoisted and/or lowered by said linkage as soon as said cradle engages the supporting surface.
Claim 5
Dependent Claim
59 words
The hoist cradle according to claim 2 in which said end components comprise a main attaching plate, and a hoist plate slideable within limits, with respect to said main attaching plate, whereby said ramps are raised by said linkage prior to said cradle being hoisted and/or lowered by said linkage as soon as said cradle engages the supporting surfaces.
Claim 6
Dependent Claim
57 words
The hoist cradle according to claim 1 in which said end components include a main attaching plate, a vertical slot formed therein, a pair of hoist plates one upon each side of said main plate, and means extending between said hoist plates and engageable within said slot, said slot being approximately twice as long as said means.
Claim 7
Dependent Claim
57 words
The hoist cradle according to claim 2 in which said end components include a main attaching plate, a vertical slot formed therein, a pair of hoist plates one upon each side of said main plate, and means extending between said hoist plates and engageable within said slot, said slot being approximately twice as long as said means.
Claim 8
Dependent Claim
48 words
The hoist cradle according to claim 1 in which said linkage comprises a length of flexible material, and a pulley assembly detachably securable to said hoist plates at the upper ends thereof and means to detachably secure said pulley assembly to said hoist plates in pivotal relationship thereto.
Claim 9
Dependent Claim
48 words
The hoist cradle according to claim 2 in which said linkage comprises a length of flexible material, and a pulley assembly detachably securable to said hoist plates at the upper ends thereof and means to detachably secure said pulley assembly to said hoist plates in pivotal relationship thereto.
Claim 10
Dependent Claim
48 words
The hoist cradle according to claim 3 in which said linkage comprises a length of flexible material, and a pulley assembly detachably securable to said hoist plates at the upper ends thereof and means to detachably secure said pulley assembly to said hoist plates in pivotal relationship thereto.
Claim 11
Dependent Claim
48 words
The hoist cradle according to claim 4 in which said linkage comprises a length of flexible material, and a pulley assembly detachably securable to said hoist plates at the upper ends thereof and means to detachably secure said pulley assembly to said hoist plates in pivotal relationship thereto.
References Cited (Backward Citations)
US2593664A
Cited
US2818296A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |