Work scaffold and method

Patent metadata

Field	Value
Publication number	US-10801219-B2
Application number	US-201816001624-A
Country	US
Kind code	B2
Filing date	Jun 6, 2018
Priority date	Jun 19, 2017
Publication date	Oct 13, 2020
Grant date	Oct 13, 2020

Abstract

A work scaffold having a platform and leg assemblies rotatably attached to each end of the platform. The platform may have a handle connected to free end that extends out the sides of the platform, which engage with links attached to the leg assemblies and the platform to lock the scaffold in an open or closed position. The platform may have hooks that extend out beyond the ends of the platform from under the platform so a second work scaffold can be situated on the hooks. The platform may be formed of boards with holes that receive cross members. A method for using a work scaffold. A method for forming a work scaffold.

First claim

The invention claimed is:

1. A work scaffold comprising:
a platform;
a first kg assembly moat lye attached in proximity to a first end of the platform;
a second leg assembly rotatably attached proximity to a second end of the platform; and
a latch assembly which locks the first leg assembly in an open position where the first leg assembly forms an angle between 30° and 125° with the platform so a user can be supported on the scaffold when standing on the scaffold, and unlocks the first leg assembly from the locked position so the first leg assembly can rotatably move into a closed position where the first leg assembly is folded up to the platform and is essentially in parallel with the platform, the latch assembly having a latch handle and a first latch bracket attached adjacent a first side of the platform and a second latch bracket attached adjacent a second side of the platform, the latch handle having a generally U shape formed by a center portion and a first arm and a second arm which extend from either side of the center portion, the first arm held to the platform by the first latch bracket and the second arm held to the platform by the second latch bracket, the first arm having a free end which extends through a first platform slot in the first side of the platform, the latch assembly having a first spring which biases the free end towards a top of the first platform slot in the open position, the platform having a first latch bolt extending outwards from the first side, a first link with a link slot, the first link, attached to the front kg assembly with a first latch bolt disposed in the first link slot to hold the first link to the first side of the platform, as the first leg assembly moves relative to the platform, the first link slot moves along the first latch bolt until the first, latch bolt is disposed at a far end of the first link slot when the scaffold is in the open position, and the first latch bolt is disposed at a rear end of the link slot when the scaffold is in the closed position, the free end of the first arm extends out of the first platform slot and blocks the first link from moving and thus locks the first leg assembly in the open position, when the handle is moved up, the first arm moves down in the first platform slot allowing the first link slot to move along the first latch bolt and thus the first link to move to the folded position, when in the folded position, the first link holds down the free end with the first latch bolt disposed in the rear end of the link slot, which holds the handle up towards the platform so the handle will not catch on an object when the scaffold is being moved.

2. The scaffold of claim 1 wherein the first leg assembly has a first rail and a second rail in spaced relation and in parallel with the first rail, and a support bar attached to the first rail and second rail and disposed in front of the first and second rails.

3. The scaffold of claim 2 wherein the first arm has a first segment that extends at a first end of the first segment from a first end of the center portion at an angle between 20° and 55°, a second segment that extends at a first end of the second segment from a second end of the first segment at an angle between 20° and 50°, the free end extending at an angle of about 90° from a second end of the second segment.

4. The scaffold of claim 3 wherein the first and second rails of the first leg assembly are coplanar with the platform in the closed position.

Assignees

• Parker Thomas W
• Werner Co

Inventors

• Parker Thomas W

Classifications

• E04G1/28

  designed to provide support only at a low height · CPC title

• E04G2001/157

  Extensible platforms, e.g. telescopic platforms · CPC title

• E04G1/154 Primary

  Non-detachably fixed and secured connections between platform and scaffold · CPC title

• E04G1/30

  Ladder scaffolds {(ladders having platforms E06C1/39, platforms on, or for use on; ladders E06C7/16)} · CPC title

• E04G2001/305

  The ladders being vertical and perpendicular to the platform · CPC title