David E Heitzmann

US Patent:

6478321, Nov 12, 2002

Filed:

Aug 2, 2000

Appl. No.:

09/631243

Inventors:

David E. Heitzmann - Union MI

Assignee:

MOR/ryde International, Inc. - Elkhart IN

International Classification:

B60G 1124

US Classification:

280124177, 28012417, 280124175, 280124172, 280676, 280687, 267219, 267229

Abstract:

A rubber shear spring assembly for mounting between inner ends of adjacent leaf springs of a tandem axle including a hanger for mounting on a vehicle frame, hanger sides on the hanger, a rubber shear spring assembly between the hanger sides, the rubber shear spring assembly including a central plate and first and second rubber shear springs having inner sides mounted on opposite sides of the central plate and the rubber shear springs having outer sides mounted on the hanger sides, and connector members mounted at opposite ends of the central plate for connection to the inner ends of adjacent leaf springs.

US Patent:

6986524, Jan 17, 2006

Filed:

Oct 27, 2003

Appl. No.:

10/694507

Inventors:

David E. Heitzmann - Union MI, US

International Classification:

B62D 53/08

US Classification:

280433, 280440, 280439

Abstract:

A fifth wheel pin box assembly for towing a trailer behind a towing vehicle including a column, a top member secured to the column, a rubber shear spring, a first plate on the rubber shear spring attached to the top member, a skid pad, a second plate on the rubber shear spring attached to the skid pad, a rubber member bonded between the first and second plates, and a pin extending downwardly from the skid pad.

US Patent:

7703792, Apr 27, 2010

Filed:

Nov 28, 2007

Appl. No.:

11/946477

Inventors:

David E. Heitzmann - Union MI, US
Jonathan D. Kauffman - Elkhart IN, US

Assignee:

MOR/ryde International, Inc. - Elkhart IN

International Classification:

B60D 1/32

US Classification:

2804551, 280432, 2804412, 2804171

Abstract:

A hitch coupling assembly attaching a trailer to a towing vehicle. The towing vehicle including a hitch plate that has an upper surface and an open end for receiving a king pin. The coupling assembly has an arm with opposite ends. A skid plate is attached to one end of the arm and the skid plate has a perimeter defined by sides. The king pin extends from a surface of the skid plate. A journal pin is attached to the opposite end of the arm and is rotatable relative to the arm. The journal pin is optionally lockable or the arm relative to the hitch is optionally lockable.

US Patent:

61764787, Jan 23, 2001

Filed:

May 19, 1998

Appl. No.:

9/081184

Inventors:

David E. Heitzmann - Union MI

Assignee:

MOR/ryde International, Inc. - Elkhart IN

International Classification:

B60G 1112

US Classification:

267269

Abstract:

A rubber shear spring add-on assembly for the leaf spring of an automotive vehicle, the rubber shear spring add-on assembly being connected between the rear end of the leaf spring and the frame, the rubber shear spring add-on assembly including a spring carrier assembly mounting the rear end of the leaf spring, a hanger assembly mounted on the frame member and a rubber shear spring mounted between the hanger assembly and the spring carrier assembly which is mounted on the rear end of the leaf spring.

US Patent:

58994700, May 4, 1999

Filed:

Jul 1, 1997

Appl. No.:

8/886593

Inventors:

David E. Heitzmann - Union MI

Assignee:

MOR/ryde International, Inc. - Elkhart IN

International Classification:

B60G 314
B60G 1122
B62D 1700

US Classification:

280 86751

Abstract:

A modular wheel suspension includes a frame mounting plate having a central support member affixed thereto. The central support member mounts a pivot shaft bracket support. A pivot shaft bracket is adjustably mounted on the pivot shaft bracket support. The pivot shaft bracket pivotally mounts a shaft which is connected to one end of a beam arm, the other end of which mounts a wheel axle on which a wheel is mounted. A rubber shear spring is mounted between the beam arm and a portion of the frame mounting plate. The adjustable mounting of the pivot shaft bracket provides for toe and camber adjustment of the wheel.

US Patent:

49956361, Feb 26, 1991

Filed:

May 26, 1989

Appl. No.:

7/358006

Inventors:

Ron E. Hall - Elkhart IN
David E. Heitzmann - Union MI

Assignee:

MOR/ryde, Inc. - Elkhart IN

International Classification:

B60G 1162

US Classification:

180716

Abstract:

A trailng arm modular axle suspension unit including a hanger for attachment to a vehicle frame and having spaced sides and fore and aft and central portions, a trailing arm having sides and fore and aft and central portions, a rubber bushing mounting the fore portion of the trailing arm on the fore portion of the hanger, the aft portion of the trailing arm extending beyond the central portion of the hanger, a U-bolt construction for mounting an axle on the aft portion of the trailing arm which extends beyond the central portion of the hanger, a shock absorber mounted between the aft portion of the trailing arm and the aft portion of the hanger, and rubber springs secured between the opposite sides of the central portion of the trailing arm and the opposite sides of the central portion of the hanger.

US Patent:

51509180, Sep 29, 1992

Filed:

May 1, 1991

Appl. No.:

7/694207

Inventors:

David E. Heitzmann - Union MI

Assignee:

MOR/ryde International, Inc. - Elkhart IN

International Classification:

B60G 1122

US Classification:

280716

Abstract:

A trailing arm construction for the rear wheels of an automotive vehicle including a trailing arm, a pivotal mounting for the fore portion of the trailing arm, a shear rubber spring mounted directly between the vehicle frame and a central portion of the trailing arm, a bracket for attaching the driven vehicle axle to the central portion of the trailing arm, and a coil spring mounted directly between the aft portion of the trailing arm and the vehicle frame. A construction as described including a tag arm construction for mounting a wheel behind the rear wheels including a tag arm having a fore portion pivotally mounted directly on the vehicle frame, a bracket on the central portion of the tag arm for mounting an axle, and a shear rubber spring mounted directly between the vehicle frame and the aft portion of the tag arm.

US Patent:

57329702, Mar 31, 1998

Filed:

Sep 25, 1995

Appl. No.:

8/533555

Inventors:

David E. Heitzmann - Union MI

Assignee:

MOR/ryde International, Inc. - Elkhart IN

International Classification:

B60G 1122

US Classification:

280717

Abstract:

A modular rubber spring suspension including a hanger having a vertical plate extending downwardly from a horizontal plate, a rubber spring, a first side on the rubber spring secured to the vertical plate, a beam having first and second ends and a central portion therebetween, a second side on the spring secured to the first end of the beam, and a fulcrum mounted on the horizontal plate and mounting the central portion of the beam.