Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Engineering
Class Information
Number: 137/221
Name: Fluid handling > Larner-johnson type valves; i.e., telescoping internal valve in expanded flow line section > Internal servo-motor with internal pilot valve
Description: Flow control devices in which a controlled motor device comprising a pilot operated or servo-mechanism is involved, the motor device and its pilot or control valve being located within the internal part of the valve, i.e., the part comprising the telescoping support and the needle or movable valve head lying within the flow passage.










Sub-classes under this class:

Class Number Class Name Patents
137/222 Pilot controlled passage in nose or needle 4


Patents under this class:

Patent Number Title Of Patent Date Issued
8656941 Flow control valve Feb. 25, 2014
8353310 Valves having removable internal actuation mechanisms Jan. 15, 2013
8136543 Axial flow control valves having an internal actuator Mar. 20, 2012
8113228 Suction valve Feb. 14, 2012
5417238 Tillage implements May. 23, 1995
5303778 On-off type sprinkler Apr. 19, 1994
4732189 Fast opening valve Mar. 22, 1988
4429709 Cascade-based method and device for fluid handling and measurement Feb. 7, 1984
4254634 Control valve to be employed for refrigerator and air conditioner Mar. 10, 1981
3974849 Diaphragm valves Aug. 17, 1976











 
 
  Recently Added Patents
Stage drive method and stage unit, exposure apparatus, and device manufacturing method
Control unit including a computing device and a peripheral module which are interconnected via a serial multiwire bus
Video stabilization
Method to trace video content processed by a decoder
Orthogonal tunable antenna array for wireless communication devices
Herbicide composition having improved effectiveness, method of preparation and use
Integrated transmit/receive switch
  Randomly Featured Patents
Advancement of film strips of different widths and/or sprocket hole sizes
Switch device with AC inlet and AC switch
Cornerboard assembly
Ink jet printer, printer control unit, printer system including the same, and storage medium with the operation program of the printer control unit stored for controlling double-side printing
Process for the fabrication of metal-made carrier body for exhaust gas cleaning catalyst
LED channel
Substituted amides
Optical displacement measurement device and optical displacement measurement system
Variable resistance band exercise machine
Liquid developer for image fixing method using heat application rollers