US3633775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Service vehicle
Assignee: Individual
•
Filing: 1970-04-17
•
Granted: 1972-01-11
•
Expires: 1990-04-17
Abstract
Abstract A service vehicle in which the rear chassis can be lowered to a ground-engaging position to haul up a wrecked vehicle on the rear chassis body. The rear chassis may be elevated to its normal riding condition after the wrecked vehicle is on the rear chassis. The lowering and elevation of the chassis body may be accomplished either pneumatically or hydraulically.
Inventors
- 👤 Albert J Pugliese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:27
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/12; B60P3/122; B60P1/00; B60P1/04; B60P1/16; B60P1/18
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
160 words
A service vehicle provided with a motor-driven cab and an elongated rear chassis with at least one pair of ground-engaging rear wheels remote from said cab, a ramplike section forming the extreme end of said rear chassis adjacent to said rear wheels, a bellows and a source of compressed air for selectively elevating and lowering said rear chassis, means mounting said bellows including two telescoping sections, one of said sections being rigidly connected to said chassis while the other of said telescoping sections being operatively connected to the axle of said rear wheels, a metallic stiffening member connected at one end to said axle and pivotally connected at the other end to said chassis which permits substantial vertical movement of said bellows and restricts lateral movement thereof, a first valve means for selectively permitting the supply of compressed air to said bellows, and second valve means permitting said compressed air in said bellows to be selectively evacuated to the atmosphere.
Claim 2
Dependent Claim
160 words
A service vehicle provided with a motor-driven cab and an elongated rear chassis with at least one pair of ground-engaging rear wheels remote from said cab, a ramplike section forming the extreme end of said rear chassis adjacent to said rear wheels, a bellows and a source of compressed air for selectively elevating and lowering said rear chassis, means mounting said bellows including two telescoping sections, one of said sections being rigidly connected to said chassis while the other of said telescoping sections being operatively connected to the axle of said rear wheels, a metallic stiffening member connected at one end to said axle and pivotally connected at the other end to said chassis which permits substantial vertical movement of said bellows and restricts lateral movement thereof, a first valve means for selectively permitting the supply of compressed air to said bellows, and second valve means permitting said compressed air in said bellows to be selectively evacuated to the atmosphere.
Claim 3
Dependent Claim
18 words
A service vehicle as claimed in claim 1 wherein said chassis pivots on the forward pair of wheels.
References Cited (Backward Citations)
US1013808A
Cited
US2706009A
Cited
US2774604A
Cited
US2957593A
Cited
US2838191A
Cited
US3434708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |