Granted Patent B2

US 8,733,072 · App. 13/289,613 · Granted May 27, 2014

Abstract

Claims (14)

1. A lawn mower, comprising:

an internal combustion engine;

an electric motor configured to start the internal combustion engine;

a blade driven by the internal combustion engine;

an assembly for stopping at least one of the blade and the internal combustion engine, the assembly comprising:

a brake mechanism,

a release mechanism,

a linkage between the brake mechanism and the release mechanism,

an interlock configured to prevent the release mechanism from releasing the brake mechanism, and

an interface allowing an operator to release the interlock,

wherein the electric motor is coupled to the assembly such that release of the brake mechanism automatically engages the electric motor to start the internal combustion engine.

2. The lawn mower of claim 1 , further comprising a battery configured to power the electric motor, wherein the battery and the electric motor are fastened to the internal combustion engine.

3. The lawn mower of claim 2 , wherein the brake mechanism comprises an ignition interrupt system.

4. The lawn mower of claim 2 , wherein the brake mechanism comprises a mechanical brake that provides a friction contact with a flywheel of the internal combustion engine for stopping the at least one of the blade and the internal combustion engine.

Assignments (8)