US3789558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer home jack and method of operating the same
Assignee: Individual
•
Filing: 1971-11-26
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Granted: 1974-02-05
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Expires: 1991-11-26
Abstract
Abstract A trailer home is moved into side by side contiguous relationship with another trailer home by placing two pairs of telescopically extendable members transversely under the first trailer home. A pair of vertically disposed ground engaging jacks engage the lower member of each pair of telescoping members and the top member engages the bottom of the first trailer home. A horizontally disposed jack connected between each of the telescoping members allows the first trailer home to be moved toward the second trailer home after the vertical jacks have been operated to raise the trailer home such that the transport wheels are out of ground engagement. A stationary support is then placed under the first trailer home and the jack structure is lowered and removed.
Inventors
- 👤 H Spencer
- 👤 T Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:02
CPC Classifications
E; E04; E04G; E04G21/00; E04G21/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
215 words
In combination a trailer home and jack structure comprising, a trailer home having an elongated body and ground support wheels for moving said trailer home along a line parallel to the longitudinal axis of said trailer home, a horizontally disposed jack structure at each end of said trailer frame and each structure including upper and lower elongated telescoping members, said upper member supportingly engaging said trailer home transversely of its longitudinal axis, said upper member being a downwardly facing channel and said lower member being positioned in said channel, rollers being provided between and in engagement with the top surface of said lower member and the base of said channel, adjustment means interconnecting said upper and lower elongated telescoping members for moving said upper member relative to said lower member and moving said trailer home laterally, a vertically disposed ground engaging jack structure at each end of each horizontal jack structure and engaging said lower horizontally disposed jack member to maintain said trailer home at a desired height above the ground, said adjustment means including a longitudinally stationary threaded shaft rotatably secured to the outer end of said upper member and threadably engaging a threaded member on said lower member, and a hand operated handle being provided on the outer end of said threaded shaft.
Claim 2
Dependent Claim
215 words
In combination a trailer home and jack structure comprising, a trailer home having an elongated body and ground support wheels for moving said trailer home along a line parallel to the longitudinal axis of said trailer home, a horizontally disposed jack structure at each end of said trailer frame and each structure including upper and lower elongated telescoping members, said upper member supportingly engaging said trailer home transversely of its longitudinal axis, said upper member being a downwardly facing channel and said lower member being positioned in said channel, rollers being provided between and in engagement with the top surface of said lower member and the base of said channel, adjustment means interconnecting said upper and lower elongated telescoping members for moving said upper member relative to said lower member and moving said trailer home laterally, a vertically disposed ground engaging jack structure at each end of each horizontal jack structure and engaging said lower horizontally disposed jack member to maintain said trailer home at a desired height above the ground, said adjustment means including a longitudinally stationary threaded shaft rotatably secured to the outer end of said upper member and threadably engaging a threaded member on said lower member, and a hand operated handle being provided on the outer end of said threaded shaft.
Claim 3
Dependent Claim
25 words
The structure of claim 1 wherein stop means are provided on said upper member for engagement by said lower member to limit vertical movement therebetween.
Claim 4
Dependent Claim
40 words
The structure of claim 1 wherein said stop means includes a roller extending across the bottom side of said lower member and having upwardly extending legs connected to the downwardly extending side walls of said channel of said upper member.
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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |