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Class Information
Number: 251/319
Name: Valves and valve actuation > Reciprocating valve > Push or pull operator
Description: Valves actuated by a reciprocating means (e.g., push and pull button or rod).
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4590969 |
Valve |
May. 27, 1986 |
| 4520870 |
Well flow control device |
Jun. 4, 1985 |
| 4477056 |
High force-gain valve |
Oct. 16, 1984 |
| 4383548 |
Evacuating-charging valve assembly |
May. 17, 1983 |
| 4356837 |
Self-cleaning orifice assembly |
Nov. 2, 1982 |
| 4337920 |
Valve |
Jul. 6, 1982 |
| 4280561 |
Valve |
Jul. 28, 1981 |
| 4278131 |
Port apparatus for well piping |
Jul. 14, 1981 |
| 4204661 |
Wasteless connecting valves |
May. 27, 1980 |
| 4178841 |
Air vent |
Dec. 18, 1979 |
| 4164221 |
Atraumatic blood access device valve |
Aug. 14, 1979 |
| 4155492 |
Stopper valve for a pouring ladle |
May. 22, 1979 |
| 4151978 |
Stroke limiting apparatus for hydraulic cylinders |
May. 1, 1979 |
| 4151880 |
Vent assembly |
May. 1, 1979 |
| 4095931 |
Injection molding machine and method |
Jun. 20, 1978 |
| 4088300 |
Flow control valve for hot pitch or other viscous material |
May. 9, 1978 |
| 4081231 |
Flow distribution valve for dual thermoplastic tube extrusion |
Mar. 28, 1978 |
| 4064909 |
Slide valve apparatus |
Dec. 27, 1977 |
| 4043392 |
Well system |
Aug. 23, 1977 |
| 4036467 |
Valve |
Jul. 19, 1977 |
| 4008878 |
Gas control valve for gas shielded electric welding torches |
Feb. 22, 1977 |
| 3995430 |
Valve noise suppression by fluid recirculation |
Dec. 7, 1976 |
| 3990680 |
Valve construction and method of making the same |
Nov. 9, 1976 |
| 3990508 |
Remotely operated well safety valves |
Nov. 9, 1976 |
| 3978885 |
Unbalance pressure actuator for a flow control apparatus having noise and vibration reducing arrangement thereon |
Sep. 7, 1976 |
| 3958730 |
Stopper plug for bottom pour ladles |
May. 25, 1976 |
| 3939947 |
Dashpot for either push or pull damping |
Feb. 24, 1976 |
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