Resources Contact Us Home
Browse by Category: Main > Engineering
Class Information
Number: 137/42
Name: Fluid handling > Control by change of position or inertia of system > Position relative body of water (e.g., marine governors) > Pressure or head controlled
Description: Apparatus which includes means to sense the pressure or head of the body of water in which the system exists.

Patents under this class:

Patent Number Title Of Patent Date Issued
8323573 Microfluidic cartridge with solution reservoir-pump chamber Dec. 4, 2012
6164922 Flow control valve for a pump for conveying a medium Dec. 26, 2000
6085779 Draining gutter Jul. 11, 2000
5819328 Hydrostatic drain plug Oct. 13, 1998
4125129 Fixed and variable resistance fluid throttling apparatus Nov. 14, 1978
4121771 Drip irrigation emitter Oct. 24, 1978
4120033 Apparatus and method for determining pumping system head curves Oct. 10, 1978

  Recently Added Patents
Packet transmission method, apparatus, and network system
Discharge circuit and method
Analysis, secure access to, and transmission of array images
Dry-cooling unit with gravity-assisted coolant flow
Receiving security risk feedback from linked contacts due to a user's system actions and behaviors
Modified binding proteins inhibiting the VEGF-A receptor interaction
  Randomly Featured Patents
Cargo security inspection method and system based on spiral scanning
Vacuum cleaner
Internal chip antenna
Process for preparing a binder for surfacing roadways of bitumen and reclaimed rubber powdered base and also binder obtained by employing this process
Multi-ceramic layer switch circuit
Mower deck
Electrical and thermal contact for use in semiconductor devices
Electrochemical cells
Liquid crystal display having green TFT in blue pixel region