John B Calvert

US Patent:

D656452, Mar 27, 2012

Filed:

Jan 7, 2011

Appl. No.:

29/382844

Inventors:

John Calvert - Lancaster CA, US

International Classification:

1206

US Classification:

D12223

US Patent:

8590909, Nov 26, 2013

Filed:

Apr 6, 2012

Appl. No.:

13/441661

Inventors:

John Calvert - Lancaster CA, US

International Classification:

B62D 61/12
B60G 11/113

US Classification:

280124104, 280755, 280767, 280124153, 280296

Abstract:

A wheelie bar for leaf spring equipped cars includes first and second mounting brackets each having at least one attachment point and one bearing feature. First and second lower side members are pivotally mounted to the mounting brackets. A ground wheel is rotatably mounted to ends of the lower side members. First and second upper side members are pivotally mounted to the mounting brackets and fixedly attached to the lower side members. A vehicle bearing wheel is rotatably mounted to opposite ends of the first and second upper side members. Bearings are provided. A rear support member connects the upper side members and distal ends of the lower side members. At least one elevating facility urges the first and second lower side members upwardly toward an underside of a car. The attachment points have arcuate front ends and are fixedly attached to an axle housing of the car by welding.

US Patent:

20020105117, Aug 8, 2002

Filed:

Feb 2, 2001

Appl. No.:

09/776246

Inventors:

John Calvert - Lancaster CA, US

International Classification:

F16F001/18

US Classification:

267/036100, 267/052000

Abstract:

A split-leaf spring assembly for motor vehicle is disclosed having first and second leaf springs having second ends thereof overlapping. The overlapping portions of the leaf springs are connected. A bracket is fixed to the first leaf spring and extends around a portion of the second leaf spring. Similarly, a bracket is fixed to the second leaf spring and extends around a portion of the first leaf spring. The overlapping portions of the first and second leaf springs are configured to reinforce a high-stress area of the assembly. The leaf springs may be of different thicknesses, and are interchangeable.

US Patent:

53540921, Oct 11, 1994

Filed:

Apr 23, 1993

Appl. No.:

8/052256

Inventors:

John Calvert - Lancaster CA

International Classification:

B60G 1102

US Classification:

280718

Abstract:

A traction device for a motor vehicle, includes a rear support assembly bolted adjacent to a leaf spring opposite to a rear axle, a front support assembly which is pivotally attached to a front end of the leaf spring, and a rigid link which extends between and is attached to both the front and rear support assemblies at locations spaced from the leaf spring. The front support assembly includes a pair of generally triangular plates wherein a bolt at each apex connecting the plates performs a defined function. Specifically, a first upper bolt extends through a front spring eye of the leaf spring to provide a pivot axis for the front support assembly. A second upper bolt is positioned to extend across an upper surface of the leaf spring at a location spaced rearwardly from the front spring eye, to limit pivotal movement of the front support assembly relative to the leaf spring. A third bolt extends between the plates at a lower end thereof to secure a front end of the rigid link. This rigid link includes an elongated link tube or bar having eye connectors threaded into the front and rear ends thereof.