← Back to Patent Explorer
US4601632A Expired / Lapsed US ⏱️ 0.0 years remaining

Stowable truck ramp with extension sleeve

Assignee: Individual
•
Filing: 1984-12-10
•
Granted: 1986-07-22
•
Expires: 2004-12-10
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A stowable ramp assembly for a pickup truck or the like includes a generally thin, flat and elongated ramp sleeve adapted for placement on a truck bed with the rearward end thereof positioned at the rearward end of the bed. An extension sleeve is telescopically slidable within the ramp sleeve and an elongated ramp is telescopically slidably received in the extension sleeve. The extension sleeve is rearwardly slidable to a working position over the lowered horizontal tailgate and the ramp is extendable rearwardly therefrom in the working position and connected to the extension sleeve for up and down pivotal movement of the rearward end of the ramp.

Inventors

  • 👤 John H. Agee

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 03:54
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/43; B60P1/431

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 411 words
A stowable ramp assembly for a pickup truck or the like having an elongated bed and a tailgate pivotally movable between vertical and horizontal positions, comprising, a generally thin, flat and elongated ramp sleeve having forward and rearward ends, a load supporting top wall and a pair of opposite side walls, said ramp sleeve adapted for placement on a truck bed with the rearward end thereof positioned at the rearward end of the bed, an extension sleeve generally telescopically slidably received in said ramp sleeve for fore and aft sliding movement between a storage position at least substantially within said ramp sleeve and a working position extended rearwardly of the ramp sleeve by a dimension of approximately the rearward extent of the tailgate from the bed in the horizontal position thereof, said ramp sleeve and said extension sleeve each comprising an inverted generally U-shaped channel member, first coacting stop means on said ramp sleeve and extension sleeve operative to limit rearward sliding movement of the extension sleeve to the working position thereof, said first coacting stop means comprising an outward rod-like projection on each side wall of the extension sleeve adjacent the forward end thereof and a pair of registered stop plates on the interior surface of the ramp sleeve side walls adjacent the rearward ends thereof and at positions for abutment by said rod-like projections, an elongated ramp generally telescopically slidably received in said extension sleeve for fore and aft sliding movement through said extension sleeve and into and from said ramp sleeve between a storage position substantially entirely within said ramp sleeve and an extended working position with the forward end of the ramp situated adjacent the rearward end of the extension sleeve in the working position thereof, said ramp substantially as long as said ramp sleeve, second coacting stop means on said ramp and extension sleeve operative to limit rearward sliding movement of the ramp to the working position thereof, said second coacting stop means comprising an outward rod-like projection on each side wall of the ramp adjacent the forward end thereof and a pair of registered stop plates on the interior surface of the extension sleeve side walls adjacent the rearward ends thereof and at positions for abutment by said rod-like projections on the ramp, and the forward end of said ramp, in the extended working position thereof, being connected to said extension sleeve for up and down pivotal movement of the rearward end of the ramp.
Claim 2
Dependent Claim 411 words
A stowable ramp assembly for a pickup truck or the like having an elongated bed and a tailgate pivotally movable between vertical and horizontal positions, comprising, a generally thin, flat and elongated ramp sleeve having forward and rearward ends, a load supporting top wall and a pair of opposite side walls, said ramp sleeve adapted for placement on a truck bed with the rearward end thereof positioned at the rearward end of the bed, an extension sleeve generally telescopically slidably received in said ramp sleeve for fore and aft sliding movement between a storage position at least substantially within said ramp sleeve and a working position extended rearwardly of the ramp sleeve by a dimension of approximately the rearward extent of the tailgate from the bed in the horizontal position thereof, said ramp sleeve and said extension sleeve each comprising an inverted generally U-shaped channel member, first coacting stop means on said ramp sleeve and extension sleeve operative to limit rearward sliding movement of the extension sleeve to the working position thereof, said first coacting stop means comprising an outward rod-like projection on each side wall of the extension sleeve adjacent the forward end thereof and a pair of registered stop plates on the interior surface of the ramp sleeve side walls adjacent the rearward ends thereof and at positions for abutment by said rod-like projections, an elongated ramp generally telescopically slidably received in said extension sleeve for fore and aft sliding movement through said extension sleeve and into and from said ramp sleeve between a storage position substantially entirely within said ramp sleeve and an extended working position with the forward end of the ramp situated adjacent the rearward end of the extension sleeve in the working position thereof, said ramp substantially as long as said ramp sleeve, second coacting stop means on said ramp and extension sleeve operative to limit rearward sliding movement of the ramp to the working position thereof, said second coacting stop means comprising an outward rod-like projection on each side wall of the ramp adjacent the forward end thereof and a pair of registered stop plates on the interior surface of the extension sleeve side walls adjacent the rearward ends thereof and at positions for abutment by said rod-like projections on the ramp, and the forward end of said ramp, in the extended working position thereof, being connected to said extension sleeve for up and down pivotal movement of the rearward end of the ramp.
Claim 3
Dependent Claim 42 words
The ramp assembly of claim 1 wherein said ramp sleeve comprises said inverted generally U-shaped channel member wherein said side walls are integral downturned side portions of the top wall and further comprise inwardly directed elongated flanges along the lower edges thereof.
Claim 4
Dependent Claim 28 words
The ramp assembly of claim 2 further comprising at least one cross member connected to and extended between the flanges on opposite side walls of the ramp sleeve.
Claim 5
Dependent Claim 28 words
The ramp assembly of claim 1 wherein said rod-like projections on the extension sleeve comprise the opposite ends of a rod extended transversely through both side walls thereof.
Claim 6
Dependent Claim 36 words
The ramp assembly of claim 1 wherein the transverse width of said ramp sleeve is between 6 and 24 inches whereby more than one ramp assembly may be placed in side-by-side relation on the truck bed.

References Cited (Backward Citations)

US1699882A Cited
US3270899A Cited
US3511393A Cited
US3596788A Cited
US3613920A Cited
US3711882A Cited
US3768673A Cited
US3870170A Cited
US3977545A Cited
US4380415A Cited
US4455119A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1989-07-21 1990-01-20 1990-07-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1993-07-21 1994-01-20 1994-07-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1997-07-21 1998-01-20 1998-07-22 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag