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US5062174A Expired / Lapsed US ⏱️ 0.0 years remaining

Portable ramp

Assignee: Individual
•
Filing: 1990-08-30
•
Granted: 1991-11-05
•
Expires: 2010-08-30
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Abstract

Abstract A ramp for use in loading off road vehicles on pick up trucks. The ramp includes a number of ramp panels joined at lateral edges by hinges for foldably connecting the panels and longitudinal hinge means for foldably connecting support panels at or adjacent to both side edges of the ramp panels so that the support panels fold with ramp panels. In use the ramp panels are coplanar and the support panels are normal to the ramp panels to support a load on the top surface of the ramp panel.

Inventors

  • 👤 Stanley A. DaSalvo

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 09:55
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/43; B60P1/435

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 260 words
A portable lightweight folding ramp consisting essentially of in combination: (i) a plurality of ramp panels, each having a top surface, a bottom surface, lateral side edges, and longitudinal side edges; (ii) a plurality of support panels, each of which has longitudinal side edges and lateral side edges; (iii) first hinge means, foldably connecting together the lateral edges of adjoining ramp panels at adjoining lateral edges, the first hinge means being adapted and constructed such that: (a) when the ramp is in the open position, the ramp panels are coplanar; and (b) when the ramp is in the stored position, pairs of top surfaces and bottom surfaces are alternately folded against each other, so that the bottom surface of one panel is parallel to the top surface of the next adjacent panel; (iv) second hinge means adjacent the ramp panel longitudinal edges foldably connecting longitudinal side edges of at least two support panels to each ramp panel, the second hinge means being adapted and constructed such that: (a) when the ramp is in the open position, the support panels are co-planar and substantially normal to the ramp panels; and (b) when the ramp is in the stored position, the support panels are co-planar with the ramp panels, and (v) third hinge means foldably connecting pairs of lateral edges of the support panels adjacent the ramp panel lateral edges, the third hinge means being adapted and constructed so that when the support panels are folded to be co-planar with the ramp panels, the ramp can be folded into its stored position.
Claim 2
Dependent Claim 260 words
A portable lightweight folding ramp consisting essentially of in combination: (i) a plurality of ramp panels, each having a top surface, a bottom surface, lateral side edges, and longitudinal side edges; (ii) a plurality of support panels, each of which has longitudinal side edges and lateral side edges; (iii) first hinge means, foldably connecting together the lateral edges of adjoining ramp panels at adjoining lateral edges, the first hinge means being adapted and constructed such that: (a) when the ramp is in the open position, the ramp panels are coplanar; and (b) when the ramp is in the stored position, pairs of top surfaces and bottom surfaces are alternately folded against each other, so that the bottom surface of one panel is parallel to the top surface of the next adjacent panel; (iv) second hinge means adjacent the ramp panel longitudinal edges foldably connecting longitudinal side edges of at least two support panels to each ramp panel, the second hinge means being adapted and constructed such that: (a) when the ramp is in the open position, the support panels are co-planar and substantially normal to the ramp panels; and (b) when the ramp is in the stored position, the support panels are co-planar with the ramp panels, and (v) third hinge means foldably connecting pairs of lateral edges of the support panels adjacent the ramp panel lateral edges, the third hinge means being adapted and constructed so that when the support panels are folded to be co-planar with the ramp panels, the ramp can be folded into its stored position.
Claim 3
Dependent Claim 47 words
A ramp as claimed in claim 1 wherein one hinge part of said lateral hinge is provided with a slot whereby relative longitudinal movement of the other hinge part into said slot causes said hinge to lock said support panel in position normal to said ramp panel.
Claim 4
Dependent Claim 29 words
A ramp as claimed in claim 1 wherein clips having U-shaped cross section engage edges of adjoining ramp panels to lock the panels in a coextensive position in use.

References Cited (Backward Citations)

US3642156A Cited
US4528711A Cited
US4571144A Cited
US4635311A Cited
US4825492A Cited
US4864673A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-11-04 1995-05-06 1995-11-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-11-04 1999-05-06 1999-11-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-11-04 2003-05-06 2003-11-05 $7700.00 Window Closed / Lapsed

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