US PATENT SUBCLASS 238 / 48
.~.~.~ Spring

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

Internet Version by PATENTEC © 1999      Terms of Use


238 /   HD   RAILWAYS: SURFACE TRACK

29  DF  TIES {9}
30  DF  .~ Forms {12}
45  DF  .~.~ Special {4}
48.~.~.~ Spring

DEFINITION

Classification: 238/48

Ties so formed that the top portion, carrying two rails, is adapted to have a spring-yielding movement relatively to the bottom section of the tie.

(1) Note. Spring-bearings in ties, permitting the rails to

have spring motion independently of each other, are found in this class, subclasses 283, 284 and 285.

SEE OR SEARCH THIS CLASS, SUBCLASS:

40,