Class 254/128 - Block and tackle

Subclass of Class 254 - Implements or apparatus for applying pushing or pulling force
Definition: Pushing and pulling implement of the single throw lever
No. of patents: 2
Last issue date: 05/09/2006

Number	Title	Issue Date
7040059	Method and adjustable apparatus for anchor-free masonry wall bracing Adjustable apparatus for bracing one or both sides of a wall being fabricated from masonry blocks and having an opening near the base of the block wall. Bracing system includes strong rigid members assembled in the form of a right angle brace set having stiff vertic...	05/09/2006
6371247	Lift assembly A lift assembly includes first and second elevator structures, each including a first scissors section, a second scissors section pivotally connected to the first scissors section and supporting a lift shaft which extends between the first and second stru...	04/16/2002

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