US PATENT SUBCLASS 267 / 287
.~.~ Having stiffener

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

Internet Version by PATENTEC © 1999      Terms of Use


267 /   HD   SPRING DEVICES

2  DF  VEHICLE {14}
286  DF  .~ Coil {3}
287.~.~ Having stiffener

DEFINITION

Classification: 267/287

Having stiffener:

(under subclass 286) Spring device including a device attached between the coils of the spring element to increase the spring constant of the spring element.

(1) Note. An additional coil-spring is not considered to be a "stiffener" as defined above.

SEE OR SEARCH THIS CLASS, SUBCLASS:

290, for a first coil-spring element having a second nested coil spring element which serves to increase the spring constant of the overall device.