Resources Contact Us Home
Browse by Category: Main > Industrial
Class Information
Number: 417/135
Name: Pumps > One fluid pumped by contact or entrainment with another > Liquid pumped by supplying or exhausting gaseous motive fluid to or from pumping chamber > With float actuated control means > Control of motive fluid outlet > With control of pumped fluid outlet
Description: Apparatus wherein said buoyant means further controls the flow of fluid which is pumped from the pumping chamber.

Patents under this class:

Patent Number Title Of Patent Date Issued
8594851 Wastewater collection flow management system and techniques Nov. 26, 2013
6244828 Pump and combination pump and trap with snap-over mechanism and double-seal outlet valve Jun. 12, 2001
5938409 Gas powered fluid pump with exhaust assist valve Aug. 17, 1999
5401142 Condensate discharging device Mar. 28, 1995
5366349 Automatic liquid pump with vapor flow prevention flow outlet valve Nov. 22, 1994
4842487 Pumping device using pressurized gas Jun. 27, 1989
4828461 Apparatus for metering flowable materials in sand core making machines May. 9, 1989
4770610 Frail material slurry pump Sep. 13, 1988

  Recently Added Patents
Reception system including a mechanism countering pulsed interference
Header rail for a shower screen or the like
Automated tuning in a virtual machine computing environment
Platform for generating electricity from flowing fluid using generally prolate turbine
RF/optical shared aperture for high availability wideband communication RF/FSO links
Smart television system having methods or means for accessing paid or subscribed digital content from the internet
Aisle barrier
  Randomly Featured Patents
Multi-needle knotted-stitch quilting machine with lower stitching elements having rotating hooks
Ultrasound device for medical applications
System and method for allowing user based application licensing across multiple wireless communications devices
Thermal ink jet printhead with high nozzle areal density
Method and apparatus for process control of burnishing
Method and apparatus for fault detection/isolation in metro ethernet service
Ceramic gripping element for sports shoes
Electrophotographic apparatus having plural image forming modes, and a process cartridge applied to such electrophotographic apparatus
Styrene-acrylate copolymer composition suitable for surface size
Method and apparatus of scrolling a document displayed in a browser window