IP Library Granted Patent US 6,910,239
Granted Patent B2
US 6,910,239 · App. 10/846,276 · Granted Jun 28, 2005

Dock leveler having an inflatable member

Assignee: Kelly Company, Inc.
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Quick Facts
Patent No.
US 6,910,239
App. No.
10/846,276
Granted
Jun 28, 2005
Kind
B2
Abstract

A dock leveler for use in a loading dock. The dock leveler includes a ramp, an inflatable assembly, and a support structure. The ramp pivots between a generally horizontal lowered position and an upwardly-inclined raised position. The inflatable assembly is positioned under the ramp and adapted to generate a force. The support structure is positioned between the inflatable assembly and the ramp and adapted to transfer the force of the inflatable assembly to the bottom of the ramp to move the ramp from the lowered position to the raised position. A conduit fluidly connects to the inflatable assembly through the support structure.

Claims (9)

1. A dock leveler for use in a loading dock, the dock leveler comprising:

a ramp pivotal between a generally horizontal lowered position and an upwardly-inclined raised position;

an inflatable assembly positioned under the ramp and adapted to generate a force;

a support structure positioned between the inflatable assembly and the ramp and adapted to transfer the force of the inflatable assembly to the bottom of the ramp to move the ramp from the lowered position to the raised position; and

a conduit fluidly connected to the inflatable assembly through the support structure.

2. The dock leveler of claim 1 , wherein the conduit fluidly connects to the top of the inflatable assembly, and wherein the conduit provides gas to the top of the inflatable assembly.

3. The dock leveler of claim 1 , wherein the ramp includes at least two beams, and wherein the support structure is adapted to transfer the force of the inflatable assembly to the at least two beams.

4. The dock leveler of claim 1 , wherein the support structure is a plate.

5. The dock leveler of claim 4 , wherein the plate has an aperture, and wherein the conduit is connected to the inflatable assembly through the aperture.

Assignments (7)
RELEASE OF SECURITY INTEREST Recorded Jan 30, 2013
From: WELLS FARGO BANK, NATIONAL ASSOCIATION
To: 4FRONT ENGINEERED SOLUTIONS, INC.
Reel/Frame 029720/0286 →
TERMINATION AND RELEASE OF SECURITY AGREEMENT IN PATENT RIGHTS (PREVIOUSLY RECORDED AT REEL 018767 FRAME 0001) Recorded Dec 18, 2012
From: PNC BANK, NATIONAL ASSOCIATION (SUCCESSOR TO NATIONAL CITY BANK (SUCCESSOR TO NATIONAL CITY BUSINESS CREDIT, INC.))
To: 4FRONT ENGINEERED SOLUTIONS, INC. (F/K/A SPX DOCK PRODUCTS, INC.)
Reel/Frame 029488/0777 →
CHANGE OF NAME Recorded Dec 5, 2012
From: SPX DOCK PRODCUTS, INC.
To: 4FRONT ENGINEERED SOLUTIONS, INC.
Reel/Frame 029413/0772 →
PATENT AND LICENSE SECURITY AGREEMENT Recorded Nov 17, 2010
From: 4FRONT ENGINEERED SOLUTIONS, INC.
To: WELLS FARGO BANK, NATIONAL ASSOCIATION
Reel/Frame 025370/0655 →
SECURITY AGREEMENT Recorded Jan 17, 2007
From: 4FRONT ENGINEERED SOLUTIONS, INC. F/K/A SPX DOCK PRODUCTS, INC.
To: NATIONAL CITY BUSINESS CREDIT, INC.
Reel/Frame 018767/0001 →
CHANGE OF NAME Recorded Oct 5, 2006
From: KELLEY COMPANY, INC.
To: SPX DOCK PRODUCTS, INC.
Reel/Frame 018362/0785 →
CHANGE OF NAME Recorded Oct 5, 2006
From: KELLEY COMPANY, INC.
To: SPX DOCK PRODUCTS, INC.
Reel/Frame 018367/0705 →
Continuity (9)
Continuation 1036942000 · Feb 18, 2003
Continuation 1022244400 · Aug 16, 2002
Continuation 1000539500 · Dec 3, 2001
Continuation 0961322400 · Jul 10, 2000
Continuation 0945620700 · Dec 7, 1999
Continuation 0909323400 · Jun 8, 1998
Continuation 0853101100 · Sep 20, 1995
Continuation 0813198300 · Oct 4, 1993
Related Publication 20040205913A1 · Oct 21, 2004