Patent US3976209A successfully refreshed from Google Patents.
US3976209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pick-up truck loading ramp
Assignee: Individual
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Filing: 1974-08-09
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Granted: 1976-08-24
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Expires: 1994-08-09
Abstract
Abstract A folding loading ramp for attachment to the end gate of pickup trucks. The ramp is of such a construction so that it may fold up with the tailgate, take up minimal additional space, and not interfere with the normal use of the end gate of the truck. The ramp includes a number of foldable ramp members which are hinged to make a convenient ramp for hard to load items, such as garden tractors, motorcycles, snowmobiles, etc. Added support is given to the ramp by a supporting mechanism which folds within the ramp members when not in use. The supporting mechanism reinforces the ramp by virtue of its structure rather than by contact with the ground. This allows folding of the support mechanism within the ramp members for space saving and provides support when the loading ramp is used with a loading dock. A combination handle and locking mechanism allows for positioning the ramp as a space extension for the vehicle bed and pulling the ramp to an extended position from the folded position.
Inventors
- 👤 Edward E. Burton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:22
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/43; B60P1/435
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
140 words
A loading ramp for trucks having an end-gate, said ramp comprising: two foldable ramp members; first means pivotally connecting one of said ramp members to said end-gate; hinge means pivotally connecting said ramp members to one another; foldable supporting means connected to said hinge means and pivotally connected to said foldable ramps for reinforcing said hinge means and said ramp members when said ramp members are extended solely by its structure and connection to said hinge means and said ramps, said supporting means being adapted to support loads on said hinge means by distributing the loads internally in said supporting means and ramp members; and wherein said ramp members have longitudinal grooves enclosing the bulk of said supporting means when said ramp members and said supporting means are folded whereby the space occupied by the folded loading ramp is minimized.
Claim 2
Dependent Claim
140 words
A loading ramp for trucks having an end-gate, said ramp comprising: two foldable ramp members; first means pivotally connecting one of said ramp members to said end-gate; hinge means pivotally connecting said ramp members to one another; foldable supporting means connected to said hinge means and pivotally connected to said foldable ramps for reinforcing said hinge means and said ramp members when said ramp members are extended solely by its structure and connection to said hinge means and said ramps, said supporting means being adapted to support loads on said hinge means by distributing the loads internally in said supporting means and ramp members; and wherein said ramp members have longitudinal grooves enclosing the bulk of said supporting means when said ramp members and said supporting means are folded whereby the space occupied by the folded loading ramp is minimized.
Claim 3
Dependent Claim
44 words
Apparatus as set out in claim 1 wherein said supporting means is at least one truss, said truss having at least three members, one of said members being connected to said hinge means and two of said members being connected to said ramp members.
Claim 4
Dependent Claim
28 words
Apparatus as set out in claim 2 also including a locking means for locking said ramp members in a folded position, said locking means comprising a rotatable detent.
Claim 5
Dependent Claim
65 words
Apparatus as set out in claim 3 wherein said locking means further comprises a slot in one of said ramp members and a rotatable handle mounted to said other ramp member, said detent being connected for rotation with said handle whereby said ramp members are locked together in a folded position when said detent is within said slot and out of alignment with said slot.
Claim 6
Dependent Claim
48 words
Apparatus as set out in claim 2 wherein said truss comprises four longitudinal members, a central member, a pair of said longitudinal members located on both sides of said central member, and a joint between each pair of longitudinal members to provide for folding of said longitudinal members.
Claim 7
Dependent Claim
28 words
Apparatus as set out in claim 5 wherein said first means includes a ramp member fixedly secured in overlapping relationship to the interior surface of said end gate.
Claim 8
Dependent Claim
15 words
Apparatus as set out in claim 5 wherein said ramp members have a hollow portion.
Claim 9
Dependent Claim
17 words
Apparatus as set out in claim 7 wherein said hollow portion is filled with a foam material.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-24 | 1980-02-23 | 1980-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-24 | 1984-02-23 | 1984-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-24 | 1988-02-23 | 1988-08-24 | $7700.00 | Window Closed / Lapsed |