IP Library Granted Patent US 8,616,336
Granted Patent B2
US 8,616,336 · App. 13/604,217 · Granted Dec 31, 2013

Method for a ladder with a ladder leveler

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Quick Facts
Patent No.
US 8,616,336
App. No.
13/604,217
Granted
Dec 31, 2013
Kind
B2
Abstract

A method for setting a ladder in place includes the steps of leaning a top edge of the ladder against a work surface and swivel shoes on the bottom end of each leg of the ladder onto ground, positioning the ladder until a bubble of a rung of the ladder indicates a level reading. The method also includes the steps of sliding a rectangular closed box section metal leg having a cap which acts as a stop in an upper housing portion, the upper housing portion has two holes side by side, and a lower housing portion spaced apart from the upper housing portion of a housing of the leg attached to a rail of the ladder and inserting a holder through a hole of the two holes of the upper housing portion and a hole of two rows of holes which are set side by side but offset vertically from each other and extend through the leg.

Claims (5)

1. A method for setting a ladder having side rails defined by a web and opposing flanges extending from the web to form a c shape with rail holes and a rung in place comprising the steps of:

leaning a top edge of the ladder against a work surface and a swivel shoe on the bottom end of each leg of the ladder onto ground;

positioning the ladder until a bubble of a rung of the ladder indicates a level reading;

sliding a rectangular closed box section metal leg having a cap which acts as a stop for the leg when the leg contacts the housing in a metal housing consisting of a pair of separate unconnected housing portions fixed to one of the side rails, said pair of housing portions incloude an upper housing portion fixed to the rail and a lower housing portion fixed to the rail spaced apart from the upper housing portion, the upper housing portion is a closed rectangular box section and the lower housing portion is a closed rectangular box section, the upper housing portion has two holes side by side; each of the housing portion includes a pair of studs which are pressed into the upper housing portion and the lower housing portion and attached to the side rail to fix the upper housing portion and the lower housing portion to the side rail, the leg has a top end and a bottom end, the leg has two rows of holes which are set side by side but offset vertically from each other and extend through the leg, the two holes of the upper housing portion line up with the two rows of holes, the front surface of the leg has hash-mark labels which serve as an indicator of alignment of the rows of holes; and

inserting a holder which includes a pin for holding the leg to the housing, the pin extending through the opening of one of the two holes of the upper housing portion to hold the leg in place; and including nuts that are used to attach the upper and lower housing portions of the housing to the web of the rail between the flanges; a pair of backup plates disposed between the nut and the side rail, each plate comprising a pair of holes receiving the pair of studs and serves as a washer for the nut that attaches the plate to the rail, each plate further comprises a third hole receiving the pin and also serves as a safety device and reinforcing plate around a rail hole in the rail the pin goes through, the rail disposed between the plate and the upper and lower housing portions and each swivel shoe rotatably connected adjacent to the bottom end of each leg.

Assignments (13)
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 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 064205, FRAME 0636 Recorded Jun 16, 2025
From: WILLA FINCO II SARL
To: WERNER CO.
Reel/Frame 071649/0887 →
SECURITY INTEREST Recorded Jun 16, 2025
From: WERNER CO.
To: ARES CAPITAL CORPORATION, AS COLLATERAL AGENT
Reel/Frame 071636/0185 →
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 →
SECURITY INTEREST Recorded Jun 12, 2023
From: WERNER CO.
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT
Reel/Frame 063958/0740 →
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 →
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: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
To: WERNER CO.
Reel/Frame 043318/0824 →
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 →
SECURITY AGREEMENT Recorded Sep 29, 2012
From: WERNER CO.
To: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 029058/0486 →