| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 073309000 | Buoyancy type | 8 |
| 20090272188 | Binary Liquid Analyzer For Storage Tank - A fluid analysis system for use with a storage tank containing a plurality of fluids. The storage tank includes a drain outlet near the bottom of the tank and an opening at the top of the tank. The fluid analysis system includes a tube supported by the tank, at least one pressure sensor at the bottom of the tank, a fluid level sensor, and a processor. The tube extends from the opening of the tank to a position the bottom of the tank and supports the pressure sensor and the fluid level sensor. The fluid level sensor includes a reed switch assembly supported inside the tube and a magnetic float buoyantly supported on the exterior of the tube. The processor receives the pressure of the fluid detected by the pressure sensor and the fluid level detected by the fluid level sensor. The processor can determine a height of each of the fluids in the storage tank using the detected fluid pressure and the detected fluid level. A signal is transmitted when a ratio between the fluid heights remains substantially unchanged from a previously determined ratio, as fluid is drained from the tank. | 11-05-2009 |
| 20100288042 | Gauge for Bulk Fuel Storage Tanks - This invention relates to bulk liquid storage tanks, and in particular to an improved tank gauge for measuring the amount of liquid within the tank and for monitoring the movement or settling of the storage tank. | 11-18-2010 |
| 20110197669 | Oil Reservoir with Float Level Sensor - A drum maintenance system for use in an imaging device includes a reservoir for the storage of release agent used by the drum maintenance unit. The reservoir includes a bottle, an end cap, and a float sensor. The float sensor operates to detect the release agent in the bottle reaching a predetermined minimum level. | 08-18-2011 |
| 20120204636 | BUOYANCY FORCE-BASED LIQUID LEVEL MEASUREMENT - Methods and apparatus are provided for measuring the liquid level within a reservoir based on the buoyancy force that the liquid imparts to a float member. a float member is at least partially submerged into a liquid in a reservoir. The float member is configured, upon being at least partially submerged into the liquid to a depth, to have a buoyancy force exerted thereon by the liquid that is proportional to the depth. The buoyancy force is transferred from the float member to a sensor, via a force transfer mechanism that is movable relative to the float member and the sensor. | 08-16-2012 |
| 20140041449 | BATTERY PACK ASSEMBLY INCLUDING APPARATUS FOR DETECTING WATER ACCUMULATION AND METHOD FOR DETECTING WATER ACCUMULATION - Disclosed is a battery pack assembly including an apparatus for detecting water accumulation inside an installation region in which a battery pack is installed. The battery pack assembly includes a watertight case installed on a bottom surface of the water accumulation detecting apparatus and assembled with the battery pack therein. The water accumulation detecting apparatus includes a body including a water inlet opening through which water accumulated in the installation region flows in. A floating member floated by buoyancy of the water flowing in the body. A switch unit is configured to generate a current when the floating member increases up to or beyond a predetermined height. An elastic member is configured to connect the floating member and the bottom surface of the body so that the floating member is positioned at a predetermined position when buoyancy of the water does not affect to the floating member. | 02-13-2014 |
| 20150300864 | LIQUID LEVEL SENSOR SYSTEM - A liquid level sensor system for use in a fuel tank, includes an arm that is movable, and constructed to be sufficiently buoyant so that the arm will provide an upward force as the fuel tank is filled with fuel. A sensing subsystem is coupled to the arm and is operable to indicate continuously the amount of fuel in the fuel tank. The sensing subsystem may include a Wheatstone strain gauge, and the system may further include a microprocessor that coupled to the strain gauge to receive electrical signals corresponding to the upward force generated by the arm. A computer program provides instructions to the microprocessor to calibrate the arm according to preselected fuel-level conditions. The sensing subsystem may be located external to the fuel tank to limit the possibility of undesired igniting of the fuel. | 10-22-2015 |
| 20150300870 | LIQUID SURFACE LEVEL SENSOR ATTACHMENT STRUCTURE AND LIQUID SURFACE LEVEL SENSOR - A liquid surface level sensor includes a plurality of piece portions provided at both ends of the liquid surface level sensor in a width direction, and a plurality of elastically deformable hook portions formed to elongate from both end sides in a first height direction. A pump holder includes a plurality of claw portions formed in a claw shape by bending front end sides in an intra-width direction of the liquid surface level sensor, and a plurality of convex portions on a side of the first height direction of the plurality of claw portions. A plurality of hook portions is elastically deformed in contact with the plurality of convex portions by sliding the liquid surface level sensor in a second height direction, the plurality of hook portions gets over the plurality of convex portions and restores from an elastically deformed state by further sliding the liquid surface level sensor. | 10-22-2015 |
| 20160103010 | LIQUID LEVEL DETECTOR - A liquid level detector includes a casing, a float, a magnet body, and a switch mechanism. The casing is fixed to the container and includes a tube section extending along a gravity direction. The float floats on the surface of liquid and is displaced upward or downward along the gravity direction, being guided by the tube section. The magnet body is held by the float to be displaced upward or downward in conformity with the surface of liquid. The switch mechanism is accommodated in the tube section and is switched between its on-state and off-state by the upward or downward displacement of the magnet body. The casing includes a first casing part and a second casing part. The first casing part includes the tube section, a first locking section that is formed radially outward of the tube section, and a first guide section that is formed at a tip of the tube section in its extending direction. The second casing part includes a second locking section that supports the first casing part by engagement with the first locking section, and a second guide section that generates rotative force around the tube section to guide the first casing part toward a normal location where the first locking section is capable of engaging with the second locking section, by contact of the second guide section with the first guide section. | 04-14-2016 |
