# US 10,501,990 B2 · Ladders, ladder components and related methods

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- Number: US 10,501,990 B2
- Document ID: US10501990B2
- Status: Granted
- Kind: B2
- Application number: 14/696,829
- Filed: 2015-04-27
- Published: 2015-08-13
- Granted: 2019-12-10
- Earliest claimed: 2011-02-22
- Assignees: Wing Enterprises, Incorporated
- Applicants: Wing Enterprises, Incorporated
- Inventors: N. Ryan Moss; Sean Peterson; Brian Russell
- Web page: https://patentgrep.com/patent/US10501990B2

## CPC

- E06C 7/16: Platforms on, or for use on, ladders, e.g. liftable or lowerable platforms (aspects relating to the lifting B66F)
- E06C 1/22: with extensible, e.g. telescopic, ladder parts or struts
- E06C 1/39: Ladders having platforms; Ladders changeable into platforms (platforms for use on ladders E06C7/16)
- E06C 1/397: characterised by having wheels, rollers, or runners
- E06C 7/14: Holders for pails or other equipment on or for ladders
- E06C 7/182: {situated at the top of the ladder}
- E06C 7/42: Ladder feet; Supports therefor (for scaffold elements E04G5/02)
- E06C 7/46: Non-skid equipment
- E06C 7/50: Joints or other connecting parts
- Y10T 29/49826: Assembling or joining
- E06C: LADDERS (E04F11/00 takes precedence; step-stools A47C12/00; adaptation of ladders to use on ships B63B, to use on aircraft B64; scaffolding E04G)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Ladders, ladder components and related methods are provided including various embodiments of a combination ladder. In some embodiments, a platform is provided that is fixedly coupled with a rail assembly of a combination ladder. The platform may pivot between a useable position or state and a stowed or stored position or state. The platform may maintain a position relative to certain rungs of the rail assembly while being displaceable relative to other rungs of the rail assembly. A hand rail may be coupled to the rail assembly and a tray may be coupled with the hand rail. The tray and the platform may be configured to maintain a constant distance between one another while the rail assembly is adjusted for height.

## Claims

### Claim 1

A ladder comprising:
at least one rail assembly including a pair of rails and at least one rung coupled between the pair of rails;
a first foot removably coupled with an end of an associated rail of the pair of rails, the foot including a body portion configured to cover an end of the associated rail, the body portion including a first wall having a flexible locking tab formed therein and extending in the same plane as the first wall, the locking tab having a feature formed at a free end of the locking tab including a protrusion that extends into a through hole formed in the associated rail, wherein a surface of the flexible locking tab is exposed to a user on a first side of the associated rail and wherein the protrusion extends through the through hole and is exposed on second side of the associated rail.

### Claim 2 (depends on 1)

The ladder of claim 1, wherein the feature formed in the free end of the locking tab is selectively displaceable from the through hole, and wherein the body portion of the foot further defines at least one channel to receive a portion of the associated rail, the body being configured to slide along a length of the associated rail when the feature formed in the free end of the lacking tab is disengaged from the through hole.

### Claim 3 (depends on 1)

The ladder of claim 1, further comprising a wheel rotatably coupled with body portion of the first foot.

### Claim 4 (depends on 3)

The ladder of claim 3, wherein, when the ladder is placed on a supporting surface in an intended operating orientation, the wheel does not contact the supporting surface.

### Claim 5 (depends on 1)

The ladder of claim 1, further comprising a second foot coupled with an end of the other rail of the pair of rails, the second foot including a body portion configured to cover an end of the other ladder rail, the body portion including a first wall having a flexible locking tab formed therein and extending in the same plane as the first wall, and a feature formed at a free end of the locking tab extending into a through hole formed in the other rail.

### Claim 6 (depends on 1)

The ladder of claim 1, wherein the protrusion is formed adjacent the free end of the locking tab.

### Claim 7 (depends on 1)

The ladder of claim 1, wherein the foot comprises plastic.

### Claim 8 (depends on 1)

The ladder of claim 1, wherein the body, including the first wall and its locking tab, is a molded structure.