Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Information Technology
Class Information
Number: 73/319
Name: Measuring and testing > Liquid level or depth gauge > Float > Vertically reciprocable
Description: Gauges wherein the float reciprocates vertically or substantially vertically in following the liquid level.










Sub-classes under this class:

Class Number Class Name Patents
73/322 Indicator stem attached 41
73/321 With flexible cable transmission 55
73/320 With spiral cam or guide 17


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8677923 Sewer cleanout level indicator Mar. 25, 2014
8656774 Phase separation detector for fuel storage tank Feb. 25, 2014
8643496 Contact for fluid level detection apparatus and fluid level detection apparatus Feb. 4, 2014
8579139 Gauge well mixer Nov. 12, 2013
8443664 Equalizing container for a hydraulic motor vehicle brake system May. 21, 2013
8430641 Multiple switch float switch apparatus Apr. 30, 2013
8299931 Ice safety device Oct. 30, 2012
8220482 Devices, methods, and algorithms for rapid measurement of mean surface level change of liquids in containers Jul. 17, 2012
8196466 Sensor for inductive measure of fluid level Jun. 12, 2012
8181518 Float for liquid level indicator May. 22, 2012
8135554 Probe configuration data protocol and transmission method Mar. 13, 2012
8117911 Gauge for bulk fuel storage tanks Feb. 21, 2012
7880625 Liquid level warning device Feb. 1, 2011
7843199 Level meter Nov. 30, 2010
7707882 Gauge to indicate the level of beverage held in a beverage container May. 4, 2010
7610807 Level gage Nov. 3, 2009
7596999 Sediment monitor for a stormwater receiving system Oct. 6, 2009
7484409 Fluid level switch Feb. 3, 2009
7399985 Optical non-contact sensor for detecting material level in a container Jul. 15, 2008
7398682 Low fluid level detector system Jul. 15, 2008
7353704 Storage tank external gauge system Apr. 8, 2008
7343800 Linear position indicator system and method Mar. 18, 2008
7334536 Pop-up sewer backup indicator Feb. 26, 2008
7315250 Electrical fluid activated switch Jan. 1, 2008
7284422 Fluid level measurement device Oct. 23, 2007
7278311 Liquid level and density measurement device Oct. 9, 2007
7265677 External device indicating that a tank is filled up Sep. 4, 2007
7259384 Fluid level optical detector with float having opaque and transmissive portions Aug. 21, 2007
7082827 Leak detector Aug. 1, 2006
7082828 Laser measurement of liquid level in a holder Aug. 1, 2006
7066024 Float adapted to track an interface between two liquids of differing density Jun. 27, 2006
7062967 Fuel level sensor Jun. 20, 2006
7055386 Fluid level indicator dial assembly with magnetic calibration feature Jun. 6, 2006
7021139 Non-contact type liquid level sensor Apr. 4, 2006
7009125 Electrical fluid activated switch Mar. 7, 2006
6998552 Float-type liquid level switch assembly with light emitting elements Feb. 14, 2006
6988406 System and method of liquid level detection Jan. 24, 2006
6983655 Vehicle cesspool lever sensor Jan. 10, 2006
6915692 Level-sensor device for a liquid-fuel tank, particularly for a system for supplying LPG to an internal-combustion engine Jul. 12, 2005
6817242 Concrete level indicator Nov. 16, 2004
6813946 Liquid sensing Nov. 9, 2004
6766688 Tank volatile liquid level or volume gauge Jul. 27, 2004
6588272 Redundant level measuring system Jul. 8, 2003
6571627 Slide detector Jun. 3, 2003
6536277 Level-tracing water-monitoring apparatus Mar. 25, 2003
6532813 Method and device for determining a fill level of liquid in a container Mar. 18, 2003
6523404 Apparatus for measuring a fluid level Feb. 25, 2003
6457356 Piston pump elevator having fluid level measurement capabilty Oct. 1, 2002
6435026 Liquid level indicator Aug. 20, 2002
6418788 Digital electronic liquid density/liquid level meter Jul. 16, 2002

1 2 3 4










 
 
  Recently Added Patents
Charged particle cancer therapy beam path control method and apparatus
Power-saving receiver
Aggregating completion messages in a sideband interface
Voltage generating system and memory device using the same
Detection system and method for mobile device application
Method of purifying crude acetone stream
Method and device for determining a set of frequencies that can be used for transmitting information between radio transceivers of a network operating with frequency hopping
  Randomly Featured Patents
Pipe clamp for a round pipe
Image object separation
Traffic signal column
Chime protective gasket
Device to influence the driving performance of a remote-controlled model vehicle
Method of measuring mechanical damage to grain
Hydraulic actuation system for improved engine control
Reinforcement bar spacer wheel
Endoprosthetic bone joint devices
Fluid cat cracker apparatus