Ladder leveler and method

Patent metadata

Field	Value
Publication number	US-10760337-B2
Application number	US-201314139520-A
Country	US
Kind code	B2
Filing date	Dec 23, 2013
Priority date	Jan 14, 2006
Publication date	Sep 1, 2020
Grant date	Sep 1, 2020

Abstract

A leveler for a ladder having side rails and a rung comprises a metal housing fixed to one of the side rails. The housing has an opening. The leveler comprises a metal leg with slides in the housing and is adjustable in the housing. The leg has a top end and a bottom end. The leg has two rows of holes which are set side by side and extend through the leg. The leveler comprises a holder for holding a leg to the housing. The holder extending through the opening and one of the holes to hold a leg in place. The leveler comprises a cap disposed on the top end which acts as a stop for the leg when the cap contacts the housing. A method for setting a ladder in place.

First claim

What is claimed is:

1. A leveler for a ladder having side rails with a side rail hole and a rung comprising:
a metal housing fixed to one of the side rails, the housing having an opening and two holes side by side, the metal housing is a closed section, the housing includes an upper housing portion and a lower housing portion spaced apart from the upper housing portion;
a metal leg which slides in the housing through the opening and is adjustable in the housing, the leg has a top end and a bottom end, the leg has two rows of holes which are set side by side and extend through the leg, the two holes of the housing align with the two rows of holes;
a metal holder for holding the leg to the housing, the holder extending through the opening and one of the holes of the housing and one of the holes of the two rows and the side rail hole to hold the leg in place;
a cap disposed on the top end which acts as a stop for the leg when the cap contacts the housing;
studs which are pressed into the upper housing portion and the lower housing portion and attached to the one of the side rails to fix the upper housing portion and the lower housing portion to the side rail;
nuts that attach the housing to one of the side rails; and
a metal backup plate disposed between the nuts and the one of the side rails, the backup plate comprises a third hole for receiving the holder and also_serves as a washer for the nuts and as a safety device and reinforcing plate around the side rail hole in the side rail that the holder goes through.

2. A leveler as described in claim 1 including a level attached to a first rung.

3. A leveler as described in claim 2 including a swivel shoe rotatably connected adjacent to the bottom end of leg.

4. A leveler as described in claim 3 wherein the holder includes a pin.

5. A leveler as described in claim 4 wherein the pin is a steel ball detent pin.

6. A leveler as described in claim 5 wherein the upper housing portion is a closed section and the lower housing portion is a closed section.

7. A leveler as described in claim 6 including a case in which the level is disposed, and the rung has a cavity in which the case is disposed with the level.

8. A leveler as described in claim 7 including a cable connected to the pin and the upper housing portion.

9. A leveler as described in claim 8 wherein the steel ball detent pin is spring loaded.

10. A leveler as described in claim 9 wherein the front surface of the leg has hash-mark labels which serve as an indicator of alignment of the holes.

11. A leveler as described in claim 10 including a spacer disposed between the leg and the swivel shoe to ensure proper function between the swivel shoe and the leg.

12. 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; positioning the ladder until a bubble of a rung of the ladder indicates a level reading;
sliding a closed section metal leg having a cap which acts as a stop for the leg when the leg contacts a housing fixed to one of the side rails, the housing having an upper housing portion fixed to the one of the side rails 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 portions 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; and
inserting a metal pin through a hole of two rows of holes which are set side by side and extend through the leg and through an opening of the housing, the pin extending through one of the two holes of the upper housing portion to hold the leg in place; studs which are pressed into the upper housing portion and the lower housing portion and attached to the one of the side rails to fix the upper housing portion and the lower housing portion to the side rail 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 backup plate disposed between the nuts of the upper housing portion and the side rail, the backup plate comprises a third hole for receiving the holder and also serves as a washer for the nuts and as a safety device and reinforcing plate around a side rail hole in the side rail that the pin goes through.

Assignees

• Dangrow Joseph C
• Grebinoski James J
• Winslow David A
• Werner Co

Inventors

• Dangrow Joseph C
• Grebinoski James J
• Winslow David A

Classifications

• E06C7/003

  Indicating devices, e.g. user warnings or inclinators · CPC title

• E06C7/44 Primary

  Means for mounting ladders on uneven ground · CPC title

• Y10T29/49826

  Assembling or joining · CPC title