US Government As Represented by the Secretary of the Army

Vanguard Corporation

William E Lawson

Peter O Harken

James P Carr

John F Kopera

A sailboat swivel base for supporting a block and a rotatable arm includes a central rotatable post for supporting the block and a separate annular bearing system, located axially outwardly of the post, for rotatably supporting the arm against bending movements that would otherwise cause distortion, undue wear, and sloppiness in the base. The separate bearing system comprises annular sets of rotary bearings in the base that confine and support opposite sides of the end of the arm, the bearing sets being carried in annular recesses between the arm and the base.

Swivel base

A known vehicle normally operating on independently suspended trailing arms nd pneumatic tires can be converted to a tracked vehicle by wrapping endless tracks around the tire tread areas in multiples of two. An expansible wheel-connector device is provided for causing the trailing arms and wheels to deflect in unison, thereby maintaining track tension and tire-track interengagement, minimizing uneven final drive torque loadings, and relieving the wheel bearing loads brought on by the addition of the track.

Growing community of inventors

Stillwater, MN, United States of America

William E Lawson