Patent ID: 8695450
Filing Date: 2014-04-15
Classification: B60Y,F16F,F16H,Y10T

Abstract:
1. A variable speed drive device, comprising: a hydraulic pump assembly disposed in a housing and comprising a cylinder block and a pump input shaft extending into the housing and engaged to the cylinder block, a rotatable swash plate for controlling the output of the cylinder block, and a control shaft engaged to the swash plate for moving the swash plate between a neutral position and a plurality of non-neutral positions, wherein one end of the control shaft extends out of the housing; a control arm disposed external to the housing and engaged to the control shaft, wherein the control arm selectively rotates the control shaft; a rotary damper disposed external to the housing and engaged to the control shaft for dampening rotation of the control shaft; and a return to neutral mechanism engaged to the control shaft to rotate the control shaft from one of the plurality of non-neutral positions to the neutral position.