Patent Search Results

1 8,262,057 Flow controlled actuator apparatus for use with self-closing stop valves
2 8,069,926 Method of controlling flow through a drill string using a valve positioned therein
3 7,506,662 One-way fluid valve
4 7,464,722 Fluid proportioning valve
5 6,834,671 Check valve for micro electro mechanical structure devices
6 6,810,914 Method and arrangement to accomplish a one-way flow
7 6,748,971 Discharge valve assembly of fluid machinery
8 6,681,418 Water flow control device
9 6,546,954 Flow control valve
10 6,240,943 Method and apparatus for maintaining a constant ratio of gases in a mixture subject to steady state and intermittent flow conditions
11 6,145,309 Method for controlling the steering volume flow of a hydraulic power-assisted steering unit for motor vehicles
12 6,116,270 Piston valve
13 5,988,217 Shutoff-opening device
14 5,896,882 Pressure control valve
15 5,720,433 Draw back valve for a glue gun
16 5,691,753 Valving connector and ink handling system for thermal ink-jet printbar
17 5,636,661 Self-piloting check valve
18 5,553,756 Dispenser with pressure operated, spring biased, reciprocating piston valve
19 5,479,988 Mud check valves in drilling apparatus (wells)
20 5,390,698 Plate-type, unidirectional-flow, fluid control valve
21 5,295,506 Flow control apparatus
22 5,161,571 Check valve
23 5,120,210 Core structure for producing closed end sleeve
24 5,107,885 Check valve
25 5,036,879 Pulsation dampener and flow check apparatus
26 4,922,955 Fluid flow control device
27 4,901,757 One way valve
28 4,776,838 Three stage valve
29 4,660,596 Inside B.O.P. valve
30 4,593,720 Filling nozzle valve structure
31 4,522,230 Orifice plate seal ring for controlled closure check valve
32 4,518,007 Automatic hot water recovery system
33 4,494,563 Fluid safety valve
34 4,489,750 Pressure operated pulsatile fluid flow device
35 4,458,717 Cylinder cushion seal
36 4,422,503 Control line blow out preventer
37 4,392,512 Relief valve
38 4,332,274 Disconnector for drinking water distribution system
39 4,291,722 Drill string safety and kill valve
40 4,286,573 Water heater heat trap assembly
41 4,282,896 Pilot operated check valve
42 4,263,936 Erosion resistant check valve assembly
43 4,256,137 Check valve
44 4,249,556 Isolating and backflow preventing valve assembly
45 4,241,756 Exhalation valve assembly
46 4,220,176 Methods and apparatus for controlling fluid flow
47 4,210,168 Pressure-responsive valve unit for a fluid container
48 4,182,355 Reflux valve
49 4,176,680 Check valve
50 4,159,722 Pressure regulator for endotracheal tube cuff or the like