US PATENT SUBCLASS 305 / 131
.~.~.~ Adjustable or movable frame

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


305 /   HD   WHEEL SUBSTITUTES FOR LAND VEHICLES

124  DF  WITH TRACK SUPPORT INTERMEDIATE OF END WHEELS {4}
129  DF  .~ With roller support contacting lower track run {9}
130  DF  .~.~ With frame-mounted rollers {1}
131.~.~.~ Adjustable or movable frame

DEFINITION

Classification: 305/131

Adjustable or movable frame:

(under subclass 130) Apparatus wherein the basic supporting structural unit is positionable from one position to another position.

SEE OR SEARCH CLASS

180, Motor Vehicles,

9.54+, wherein the track support mounted for vertical movement includes a spring. [figure] [caption]A - Vehicle main frame; B - Hub; C - Journal box frame; D, E - Journal box; F - Shaft; G, H - Wheels ; J - Endless belt; K - Roller frame; L - Rollers; M - Movable vertical rods; N - Roller frame adjusting spring