US3834669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Knockdown jack assembly
Assignee: Sears Roebuck and Co
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Filing: 1973-02-12
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Granted: 1974-09-10
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Expires: 1993-02-12
Abstract
Abstract A knockdown jack assembly for elevating a suburban type riding tractor and the like. The assembly includes a conventional automotive jack having an upright standard with teeth along one surface and a lever actuated lift mechanism, a guide member disposed in parallel relation to the standard and a lift assembly slidable on the guide member, the lift assembly being detachably connected to the lift mechanism whereby movement of the lift mechanism will effect corresponding movement of the lift assembly which is adapted to support the vehicle.
Inventors
- 👤 J Reid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:11
CPC Classifications
B; B66; B66F; B66F1/00; B66F1/02; B66F1/04; B66F1/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
168 words
In combination with an automotive jack having an upright standard having a series of teeth and a cooperating lever actuated lift mechanism, the improvement which comprises, a ground engaging base member, an upright guide member supported on said base member, the base member constituting a lateral extension of the upright guide member and directed towards the load to be elevated, a ground engaging support member rigid with said base member and constituting an extension of the base member in an opposite direction, said support member arranged to support said upright standard in parallel relation to said guide member, a lift assembly embracing said guide member and slidable thereon, said lift assembly including a pair of parallel plates embracing opposite side walls of said guide member and a pair of rollers journalled in said plates and embracing front and rear walls of said guide member, and means connecting said lift assembly to said lift mechanism whereby movement of said lift mechanism will effect corresponding movement of said lift assembly.
Claim 2
Dependent Claim
168 words
In combination with an automotive jack having an upright standard having a series of teeth and a cooperating lever actuated lift mechanism, the improvement which comprises, a ground engaging base member, an upright guide member supported on said base member, the base member constituting a lateral extension of the upright guide member and directed towards the load to be elevated, a ground engaging support member rigid with said base member and constituting an extension of the base member in an opposite direction, said support member arranged to support said upright standard in parallel relation to said guide member, a lift assembly embracing said guide member and slidable thereon, said lift assembly including a pair of parallel plates embracing opposite side walls of said guide member and a pair of rollers journalled in said plates and embracing front and rear walls of said guide member, and means connecting said lift assembly to said lift mechanism whereby movement of said lift mechanism will effect corresponding movement of said lift assembly.
Claim 3
Dependent Claim
15 words
The invention as defined in claim 1 in which the support member comprises a socket.
Claim 4
Dependent Claim
31 words
The invention as defined in claim 1 including a T-shaped leg pivotally connected to said base member and means to lock said leg in a position normal to said guide member.
Claim 5
Dependent Claim
26 words
The invention as defined in claim 1 in which the lift assembly includes a pair of parallel arms arranged to support the load to be elevated.
Claim 6
Dependent Claim
39 words
The invention as defined in claim 1 in which the means connecting the lift assembly to the lift mechanism comprises a pin arranged to be received in registering apertures provided in said parallel plates and in said lift mechanism.
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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |