Richard E Conaway

US Patent:

51099390, May 5, 1992

Filed:

Oct 31, 1990

Appl. No.:

7/607559

Inventors:

Richard Conaway - Shelby OH
Thomas A. McKenzie - Spring Lake MI

International Classification:

B62D 3306
A47C 762

US Classification:

180 8915

Abstract:

An improved vibration dampening and shock absorber suspension device for the cab of a truck vehicle is set forth having a base member adapted for mounting to the truck frame and an impact plate adapted for attachment to the truck cab where the impact plate has a lateral dimension which is less than the lateral distance between the side beams of the truck frame. Interposed between the base member and the impact plate is a pair of air springs which are maintained at a constant height by a height control valve. A pair of hydraulic shock absorbers are pivotally connected to both the impact plate and base member where the central axis of the shock absorbers form the opposite sides of a trapezoid. In another embodiment of the invention a suspension device is set forth having a base member adapted for attachment to a support body and a pair of air springs intermediate the base member and an impact plate. The displacement axis of the air springs are oppositely inclined to the vertical axis of the base member forming the opposite sides of a trapezoid.

US Patent:

52538532, Oct 19, 1993

Filed:

Sep 15, 1992

Appl. No.:

7/944917

Inventors:

Richard Conaway - Shelby OH
Thomas A. McKenzie - Spring Lake MI

Assignee:

Applied Power Inc. - Butler WI

International Classification:

B60G 1126

US Classification:

267256

Abstract:

A vibration dampening suspension device for isolating a truck cab from the force vibrations of a vehicle frame, which includes an impact plate mounted to the truck cab, and a support plate mounted to the vehicle suspension. The device further includes a link member pivotally interconnected at one end with the support plate at a support pivot, and a lever member with a first end pivotally interconnected with the impact plate at a main pivot. The link member is pivotally interconnected with the lever member for rotation of the lever member with respect to the main pivot during compression of the shock absorber when the supporting body, suspended body and device are in a dynamic condition. A hydraulic shock absorber is provided with a first end pivotally interconnected with the lever member second end at a shock pivot and the second end pivotally interconnected with the impact plate at a pivot spaced from the main pivot. An air spring interconnected between the impact and support plates, and a torque arm pivotally interconnected between the impact plate and support plate, are also included.