IP Library Granted Patent US 8,151,936
Granted Patent B2
US 8,151,936 · App. 12/807,972 · Granted Apr 10, 2012

Access ladder and method

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Quick Facts
Patent No.
US 8,151,936
App. No.
12/807,972
Granted
Apr 10, 2012
Kind
B2
Abstract

An access ladder for an access hole in a building includes a plurality of sections which telescope relative to each other between an extended position, where the sections define a plane and a user can climb the sections, and a retracted position where the sections are folded on each other. Several of the sections have a least one step which preferably moves between an unfolded position where the user can stand on the step when the sections are in the extended position, and a folded position when the sections are in the retracted position. Each section slides relative to another section of the plurality of sections which it is in contact in order for the sections to telescope. A method for using an access ladder attached to an end of an access hole of a building.

Claims (4)

1. A method for using an access ladder attached to an end of an access hole of a building comprising the steps of:

telescoping a plurality of sections which telescope relative to each other between an extended position, where the sections define a plane and a user can climb the sections, and from a retracted position where the sections are folded on each other, several of the sections having at least one step which moves between an unfolded position where the user can stand on the step when the sections are in the extended position by sliding each section down over another section behind it, and a folded position when the sections are in the retracted position, each section slides relative to another section of the plurality of sections in order for the sections to telescope, the plurality of sections includes a plurality of middle sections, each section has opposing side rails, the middle sections and the bottom section have a step stop attached to each side rail; wherein the telescoping step includes the step of moving the step stop which contacts and unfolds a folding step attached to the section immediately behind the section to which the step is attached as the section moves into the extended position; and

placing a bottom section of the plurality of sections in contact with the ground.

2. A method as described in claim 1 wherein the telescoping step includes the step of pivoting a t-rocker pivotally attached to a middle section of the plurality of sections so the t-rocker releases the section to which it is attached from a section of the plurality of sections immediately behind it, allowing the section to which it is attached to be pulled down.

Assignments (12)
TERMINATION AND RELEASE OF SECURITY INTEREST IN PATENTS RECORDED AT REEL 063958, FRAME 0740 Recorded Jun 16, 2025
From: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT
To: WERNER CO.
Reel/Frame 071649/0699 →
TERMINATION AND RELEASE OF SECURITY INTEREST IN PATENTS RECORDED AT REEL 064126, FRAME 0396 Recorded Jun 16, 2025
From: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT
To: WERNER CO.
Reel/Frame 071649/0774 →
TERMINATION AND RELEASE OF SECURITY INTEREST IN PATENTS RECORDED AT REEL 064205, FRAME 0636 Recorded Jun 16, 2025
From: WILLA FINCO II SARL
To: WERNER CO.
Reel/Frame 071649/0887 →
SECURITY INTEREST Recorded Jun 27, 2023
From: WERNER CO.
To: WILLA FINCO II SARL (FORMERLY TRITON V LUXCO 95 SARL)
Reel/Frame 064205/0636 →
SECURITY INTEREST Recorded Jun 27, 2023
From: WERNER CO.
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT
Reel/Frame 064126/0396 →
RELEASE OF SECURITY INTEREST IN PATENTS AT R/F 043328/0001 Recorded Jun 12, 2023
From: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT
To: KNAACK LLC; WERNER CO.; WERNER TECHNOLOGIES, INC.
Reel/Frame 063957/0231 →
SECURITY INTEREST Recorded Jun 12, 2023
From: WERNER CO.
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT
Reel/Frame 063958/0740 →
PATENT SECURITY AGREEMENT (TERM LOAN) Recorded Jul 25, 2017
From: KNAACK LLC; WERNER CO.; WERNER TECHNOLOGIES, INC.
To: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT IN RESPECT OF THE TERM LOAN CREDIT AGREEMENT
Reel/Frame 043328/0001 →
PATENT SECURITY AGREEMENT (ABL) Recorded Jul 25, 2017
From: KNAACK LLC; WERNER CO.; WERNER TECHNOLOGIES, INC.
To: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT IN RESPECT OF THE ABL CREDIT AGREEMENT
Reel/Frame 043327/0956 →
RELEASE OF SECURITY INTEREST IN INTELLECTUAL PROPERTY COLLATERAL Recorded Jul 24, 2017
From: WERNER CO.
To: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 043318/0877 →
RELEASE OF SECURITY INTEREST IN INTELLECTUAL PROPERTY COLLATERAL Recorded Jul 24, 2017
From: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
To: WERNER CO.
Reel/Frame 043318/0824 →
SECURITY AGREEMENT Recorded Sep 29, 2012
From: WERNER CO.
To: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 029058/0486 →