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Class Information
Number:
251/321
Name:
Valves and valve actuation
>
Reciprocating valve
>
Push or pull operator
>
Biased
> Spring
Description:
Valves having a spring biased valve.
Sub-classes under this class:
Class Number
Class Name
Patents
251/323
Spring abuts valve stem guide
61
251/322
Spring stop on valve stem
78
Patents under this class:
1
2
3
Patent Number
Title Of Patent
Date Issued
4087986
Control valve
May. 9, 1978
4081176
Valve for an oral evacuator system
Mar. 28, 1978
4081141
Spray bars for metal rolling and flow control valves
Mar. 28, 1978
4064909
Slide valve apparatus
Dec. 27, 1977
4061250
Depress button type sprayer
Dec. 6, 1977
4034029
Metering rod control for an air valve carburetor
Jul. 5, 1977
4015632
Valve construction
Apr. 5, 1977
3986672
Spray gun system
Oct. 19, 1976
1
2
3
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