US PATENT SUBCLASS 29 / 215
.~.~ Engine valve spring compressor (only)

Current as of: June, 1999
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29 /   HD   METAL WORKING

700  DF  MEANS TO ASSEMBLE OR DISASSEMBLE {55}
213.1  DF  .~ Valve applying or removing {4}
215.~.~ Engine valve spring compressor (only) {3}
216  DF  .~.~.~> Plural spring engagement
217  DF  .~.~.~> Screw operated {1}
219  DF  .~.~.~> Lever operated {2}

DEFINITION

Classification: 29/215

Engine valve spring compressor (only):

(under subclass 213.1) Apparatus for compressing, or holding compressed, a valve spring of an engine (e.g., an internal combustion engine) to facilitate extraction of a valve key or pin.

SEE OR SEARCH THIS CLASS, SUBCLASS:

226, for apparatus for compressing helical transmission springs.

227, for apparatus for compressing other helical springs.

249, for apparatus for removing or inserting a valve stem key or pin.

SEE OR SEARCH CLASS

81, Tools,

486, for a resilient article tensioner or compressor. 254, Pushing and Pulling Implements,

10.5, for a spring stretcher or compressor having a force multiplying operator.