Resources Contact Us Home
Browse by Category: Main > Engineering
Class Information
Number: 137/384.4
Name: Fluid handling > With lock or seal > Common lock and valve actuator > Combination lock
Description: Devices in which the lock comprises an element which is, or a plurality of elements which are, manually manipulable in a predetermined sequence, or to a predetermined position to effect the operation of the lock.

Patents under this class:

Patent Number Title Of Patent Date Issued
4489748 Lockable apparatus for deactivating a hydraulic system Dec. 25, 1984
4061158 Valve with combination lock and remote control Dec. 6, 1977
4022137 Safe with hydraulic safety protection May. 10, 1977

  Recently Added Patents
Antennas and their coupling characteristics for wireless power transfer via magnetic coupling
Case for a tablet computer
Engineered enzymes with methionine-gamma-lyase enzymes and pharmacological preparations thereof
Systems and methods for minimization or elimination of diffusion effects in a microfluidic system
Enhancing user experiences using aggregated device usage data
Gestures for presentation of different views of a system diagram
Respirator belt having bumper cushion
  Randomly Featured Patents
Charge coupled device for outputting image data
Endoscope cleansing catheter and method of use
Control system for a combined shift in which an accumulator is disconnected in an automatic transmission
Method for producing a silica mask on a semiconductor substrate
Reducible compounds which provide aniline dyes, and analytical compositions, elements and methods using same
Toaster oven
Laser leveling instrument with a leveling base and fine self-leveling of the laser beam
Simultaneous bidirectional transceiver
Image forming device and process cartridge
Electronic security system