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Class Information
Number: 91/1
Name: Motors: expansible chamber type > With signal, indicator or inspection means
Description: Apparatus having (1) signals, indicators, registers, recorders, or gauges for indicating a condition or the position of a motor part such as a piston, control member, valve, etc., such devices consisting of relatively movable, changeable or audible information giving parts, or (2) transparent viewing means whereby the motor operation or the condition of some part thereof may be observed.

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8677884 Hydraulic pump/motor and fan driving device Mar. 25, 2014
8516945 Piston-cylinder unit Aug. 27, 2013
8459173 Bidirectional hydraulic system for operating table Jun. 11, 2013
8453441 System and method for pump-controlled cylinder cushioning Jun. 4, 2013
8365652 Adjusting element Feb. 5, 2013
8322470 Maneuvering robotic vehicles having a positionable sensor head Dec. 4, 2012
8281705 Method for detecting the drive type of an actuator (II) Oct. 9, 2012
8240240 Cylinder position sensor Aug. 14, 2012
8100045 Hydraulic cylinder rod position sensor Jan. 24, 2012
7992490 Automatic by-pass control system for meat injection machine and method of using same Aug. 9, 2011
7984670 Hydraulic distributor provided with a device for detecting seizing Jul. 26, 2011
7856918 Pneumatic brake booster comprising a force sensor Dec. 28, 2010
7735447 Shock absorbing fluidic actuator Jun. 15, 2010
7665298 Low voltage hydraulic system with electronic control for moving automatic closing apparatuses Feb. 23, 2010
7617759 Precision load positioner with positive weight deviation indication and over-pressure protection Nov. 17, 2009
7620522 Diagnostic device for at least one pneumatic valve actuator arrangement Nov. 17, 2009
7607380 Fluid pressure actuator Oct. 27, 2009
7552671 Cylinder with fiber optical position sensing device and method Jun. 30, 2009
7543525 Automobile clutch booster Jun. 9, 2009
7520208 Drive device comprising a position controller Apr. 21, 2009
7518100 System and method for detecting a position of a movable element Apr. 14, 2009
7476842 System and method for emitting and/or detecting light within a compartment Jan. 13, 2009
7468522 Collar, system and method for detecting a mark on a rod Dec. 23, 2008
7466144 Microwave measurement system for piston displacement Dec. 16, 2008
7456385 System and method for detecting an end of and/or a beginning of a stroke Nov. 25, 2008
7451684 Actuator device with a microwave position detecting device Nov. 18, 2008
7367256 Pressure switch control for attachment coupling system May. 6, 2008
7351288 Shock absorbing fluidic actuator Apr. 1, 2008
7348542 System and method for detecting an intensity of light Mar. 25, 2008
7318313 Switch Jan. 15, 2008
7294823 System and method for detecting a position of a movable element Nov. 13, 2007
7250753 Sensor attachment mechanism for fluid pressure cylinder Jul. 31, 2007
7204035 Displacement measuring system for a piston-cylinder assembly Apr. 17, 2007
7180053 Apparatus, a system and method for determining a position within a cylinder Feb. 20, 2007
7178446 Cylinder rod with position sensor surface markings Feb. 20, 2007
7177709 Controller for underground mining Feb. 13, 2007
7121185 Hydraulic cylinder having a snubbing valve Oct. 17, 2006
7082869 Sensor arrangement for a vacuum brake booster and a vacuum brake booster provided with this sensor arrangement Aug. 1, 2006
7051639 Mounting apparatus and method for cylinder position sensor May. 30, 2006
7047866 Electrical and hydraulic control system for attachment coupling system May. 23, 2006
7047865 Cylinder with fiber optical position sensing device May. 23, 2006
7004059 Hydraulic master cylinder switch Feb. 28, 2006
6952009 Apparatus, a system and a method for monitoring a position of a shaft element in a cylinder and an apparatus, a system and a method for cleaning of the shaft element Oct. 4, 2005
6901840 Angular actuator and control therefor Jun. 7, 2005
6868771 Mounting for magnetic field sensors Mar. 22, 2005
6834574 Cylinder with optical position sensing device and method Dec. 28, 2004
6813987 Electrohydraulic monitoring device for a dual effect hydraulic cylinder Nov. 9, 2004
6805037 Brake booster sensor Oct. 19, 2004
6786127 Fluid-actuated linear drive Sep. 7, 2004
6779433 Axial piston engine Aug. 24, 2004

1 2 3 4

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