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US 2007/0164599 A1Published application
Assist for raise lower mechanism for a concrete saw
AssigneeHusqvarna Professional Outdoor Products Inc.
InventorsAdam Johnson, Douglas Dempsey
Life of this patent
Estimating the term…
Abstract
A pavement treatment apparatus, for example a concrete saw, includes a bias element for biasing one part of the apparatus toward another part of the apparatus. The bias element may be one or more springs extending between an engine platform and a handle assembly.
Claims31
A concrete treatment device comprising:
- a handle assembly;
- an engine platform supporting an engine for driving a concrete treatment tool;
- a frame portion pivotally engaging the engine platform such that the engine platform and the frame portion are relatively pivoting parts;
- a bias element extending between the handle assembly and the engine platform configured to bias the engine support toward the handle assembly wherein the bias element extends at a substantial angle to at least one of the relatively pivoting parts.
1 more element
A concrete treatment device comprising:
- an engine support;
- a handle assembly extending in a direction upward and away from the engine platform wherein the engine support and the handle assembly are relatively moveable with respect to each other;
- a space adjustment mechanism for adjusting a spacing between the engine support and the handle assembly, wherein the space adjustment mechanism extends from the handle assembly at an assembly support point to the engine support at an engine support point wherein the assembly support point and engine support point define a first line;
- and
- a bias element extending between the handle assembly at a first bias element support point and the engine support at a second bias element support point wherein the first and second support points define a second line and wherein the first and second lines cross.
2 more elements
A concrete treatment device comprising
- a frame supported on the concrete by at least one support surface;
- a handle element supported by the frame and with a handle portion spaced from the frame;
- a motor support movable through pivoting movement about a pivot axis relative to the frame;
- a bias element extending between the handle element and the engine support biasing the handle element and the engine support toward each other and wherein a line normal to the bias element and extending from the bias element to the pivot axis is at least an inch long.
1 more element
Dependencies are inferred from the claim text.