Patent US3870170A successfully refreshed from Google Patents.
US3870170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loading ramp for pick-up trucks and the like
Assignee: Individual
•
Filing: 1973-06-06
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Granted: 1975-03-11
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Expires: 1993-06-06
Abstract
Abstract A loading ramp which is forwardly retractable into and rearwardly extensible from a housing or storage compartment within the bed or base of a pick-up truck body or the like. The forward end of the ramp is provided with roller means which are guided in tracks or guideways mounted within the storage compartment and which include freely sliding tracks or guideways which may be partially withdrawn from the compartment to an extended position beyond the rear end of the truck body. The ramp is also preferably provided at its forward end with a hinged extension flap which normally is foldable rearwardly to overlie upon the main body of the ramp when the ramp is not in use, but which can be unfolded to bridge the space between the ramp proper and the rear end of the truck body in the zone of the tail-gate of the truck body when the tail-gate is open.
Inventors
- 👤 Donald E Noble
- 👤 Robert H Sanderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:00
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/43; B60P1/431
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
145 words
The combination with a load-receiving platform, of means defining a storage compartment beneath said platform, said compartment defining an entrance at one end of the same, a gangplank normally stored within said compartment when not in use but being withdrawable from said compartment to provide a ramp extended from the adjacent edge of the platform, said ramp having roller means mounted thereon at one end thereof, and guide track means mounted in the storage compartment and extended longitudinally thereof for receiving and guiding the roller means aforesaid during withdrawal and retraction of the gangplank out of and into the storage compartment, said track means being movably supported above the bottom of the storage compartment for permitting partial extension of the track means beyond the entrance of the compartment, and the gangplank being suspended from and below the track means by the gangplank rollers coacting therewith.
Claim 2
Dependent Claim
145 words
The combination with a load-receiving platform, of means defining a storage compartment beneath said platform, said compartment defining an entrance at one end of the same, a gangplank normally stored within said compartment when not in use but being withdrawable from said compartment to provide a ramp extended from the adjacent edge of the platform, said ramp having roller means mounted thereon at one end thereof, and guide track means mounted in the storage compartment and extended longitudinally thereof for receiving and guiding the roller means aforesaid during withdrawal and retraction of the gangplank out of and into the storage compartment, said track means being movably supported above the bottom of the storage compartment for permitting partial extension of the track means beyond the entrance of the compartment, and the gangplank being suspended from and below the track means by the gangplank rollers coacting therewith.
Claim 3
Dependent Claim
145 words
The combination with a load-receiving platform, of means defining a storage compartment beneath said platform, said compartment defining an entrance at one end of the same, a gangplank normally stored within said compartment when not in use but being withdrawable from said compartment to provide a ramp extended from the adjacent edge of the platform, said ramp having roller means mounted thereon at one end thereof, and guide track means mounted in the storage compartment and extended longitudinally thereof for receiving and guiding the roller means aforesaid during withdrawal and retraction of the gangplank out of and into the storage compartment, said track means being movably supported above the bottom of the storage compartment for permitting partial extension of the track means beyond the entrance of the compartment, and the gangplank being suspended from and below the track means by the gangplank rollers coacting therewith.
Claim 4
Dependent Claim
145 words
The combination with a load-receiving platform, of means defining a storage compartment beneath said platform, said compartment defining an entrance at one end of the same, a gangplank normally stored within said compartment when not in use but being withdrawable from said compartment to provide a ramp extended from the adjacent edge of the platform, said ramp having roller means mounted thereon at one end thereof, and guide track means mounted in the storage compartment and extended longitudinally thereof for receiving and guiding the roller means aforesaid during withdrawal and retraction of the gangplank out of and into the storage compartment, said track means being movably supported above the bottom of the storage compartment for permitting partial extension of the track means beyond the entrance of the compartment, and the gangplank being suspended from and below the track means by the gangplank rollers coacting therewith.
Claim 5
Dependent Claim
69 words
The combination as defined in claim 1, wherein the gangplank is provided with a foldable flap which is hingedly connected to one end thereof, said flap normally overlying the ramp in a reversely folded position when the ramp is retracted into the storage compartment but being pivotally movable to an unfolded position to form an extended continuation of the gangplank when the gangplank is withdrawn from the storage compartment.
Claim 6
Dependent Claim
69 words
The combination as defined in claim 1, wherein the gangplank is provided with a foldable flap which is hingedly connected to one end thereof, said flap normally overlying the ramp in a reversely folded position when the ramp is retracted into the storage compartment but being pivotally movable to an unfolded position to form an extended continuation of the gangplank when the gangplank is withdrawn from the storage compartment.
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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |