Quotables
"There is no likelihood man can ever tap the power of the atom."
Robert Millikan, Nobel Prize winner in physics
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7430907 | Hydrometer/fluid level sensor A battery and battery condition indicator are provided with a seal as monolithic structures whereby the indicator is inserted in an opening in the battery and sealed there against via ribs in the battery confronted by a surface of the indicator and/or ribs on the in... | 10/07/2008 |
| 7403860 | Method using magnetostrictive probe buoyancy for detecting fuel density A magnetostrictive fuel level probe includes a spring-loaded foot. The probe shaft of the fuel level probe moves up and down within the spring-loaded foot as a function of fuel density. The spring-loaded foot includes a reference magnet whose height relative to the ... | 07/22/2008 |
| 7229585 | Molded plastic rod with improved break strength An injection molded plastic rod suitable for use in a battery hydrometer. Stress-relieving formations are provided symmetrically arranged on opposite sides of an injection gate of the rod. The formations distribute injection stresses and shield the gate vestige.... | 06/12/2007 |
| 7228737 | Hydrometer/fluid level sensor A light transmissive body for a fluid condition indicator has a substantial length shaped as a cruciform in transverse cross-section. ... | 06/12/2007 |
| 7097353 | Method and device for indicating temperature Disclosed is a temperature indicating method and device. The device embodies a sealed tube containing a liquid and a float. The tube has markings on the exterior indicating temperature zones or, in the alternative, temperature gradients. The method disclosed include... | 08/29/2006 |
| 6942962 | Computer monitoring and control of fermentation It is desirable to enhance reproducibility and control of batch fermentation processes. Some examples of these processes include: alcoholic beverage manufacture, and acetone and pharmaceutical production. A cellular yield curve defines the relationship between subst... | 09/13/2005 |
| 6393910 | One-piece battery charge indicator cage The battery charge indicator cage is molded as a single integral piece with two cores coming in and shutting off against each other. The battery charge indicator cage includes an internal diagonal channel in which a colored ball or balls traverse dependen... | 05/28/2002 |
| 5938885 | Automated method for monitoring and controlling the orthophosphoric acid etch rate of silicon nitride insulator layers A method for continuously monitoring and controlling the etch rates within integrated circuits of silicon nitride insulator layers and silicon nitride insulator structures in aqueous ortho-phosphoric acid (H3PO4) solutions. To practice the method of the p... | 08/17/1999 |
| 5900547 | Differential level hydrometer A differential level hydrometer reduces the possibility for user error and provides an accurate, predictable, easy to use, reliable instrument for measuring the density (specific gravity) of a liquid. The differential level hydrometer works by automatical... | 05/04/1999 |
| 5045836 | Vehicle anti-freeze monitor A vehicle anti-freeze monitor for monitoring the capability of the vehicle's coolant mixture in the cooling system of the vehicle to resist freezing. The monitor includes a light emitting diode, a reed switch for coupling the indicator to a source of elec... | 09/03/1991 |
| 5012589 | Displacement servo gauge A level gauge is used on a tank containing a liquid. The gauge utilizes a displacer suspended on a support wire or tape which is wound on a storage wheel. The storage wheel is balanced by a counterweight. Any change in liquid level results in an imbalance... | 05/07/1991 |
| 4989453 | Battery condition indicator A battery condition readout device is disclosed. A series of slides of varying densities float or sink according to the amount of charge. An optical system permits slide position to be seen at a point external to the battery.... | 02/05/1991 |
| 4972710 | Liquid level multiplier and leak detection system for storage tanks A tank leak detection system in which a liquid level multiplier is connected to a differential pressure transmitter one side of which may be piped back into the tank to compensate for internal changes in tank pressure. A capillary having a small bore conn... | 11/27/1990 |
| 4924700 | Apparatus for measuring storage parameters such as level and temperature of liquids or fluids of different densities in a tank The invention relates to apparatus for measuring storage parameters such as level and temperature relating to immiscible liquids or fluids in a tank. The apparatus comprises a pulse generator (1) for generating pulses which are applied to a delay line (3)... | 05/15/1990 |
| 4866428 | Remote battery cell specific gravity and electrolytic level monitor using floats and optical couplers A system and sensor for remotely monitoring the state of the condition of the electrolyte within each of the battery cells of a power supply is disclosed. The system includes a sensor having a dual ball-float and track arrangement for shuttering a pair of... | 09/12/1989 |
| 4848136 | Car body rectifying means The invention relates to a car body rectifying device (10) having a frame (11), and a rectifying table (12) disposed to be movable in vertical direction relative thereto with attachments (13) on the rectifying table (12) to which the vehicle can be secure... | 07/18/1989 |
| 4711117 | Side arm fluid level gauge with spaced-apart sensors for density error compensation In fluid level measurement apparatus a pressure vessel is tapped into a fluid container the fluid level in which is to be measured such that fluid level in the vessel is representative of fluid level in the container. A plurality of fluid detecting sensor... | 12/08/1987 |
| 4587923 | Battery cap indicator A battery cap indicator has a transparent cap which permits the viewer to read both electrolyte level and density simultaneously, the indicators also giving the viewer the ability to determine whether the readings are at the higher or lower end of an acce... | 05/13/1986 |
| 4240282 | Combined level indicator and hydrometer There is disclosed a new and improved combined liquid level indicator and hydrometer which includes a light transmitting member having an indicating surface and a reflector surface. The reflector surface is adapted to be submerged in liquid for reflecting... | 12/23/1980 |
| 4155254 | Volume and density indicator system for liquids in tanks A liquid storage tank is provided with an internal fixed support tube. Magnet-bearing liquid level and liquid density indicator floats are concentrically related to the fixed support tube externally thereof. Concentrically related, magnet-bearing indicato... | 05/22/1979 |
| 4142419 | Sensing device for liquids A device for indicating changes in the specific gravity of a liquid comprises first and second floats adapted to float on the surface of the liquid, the float having different shapes and/or densities so that the depth of the floats in the liquid varies in... | 03/06/1979 |
| 3968687 | Battery electrolyte indicator device A device for indicating the specific gravity and/or the level of the electrolyte in a wet storage battery with the device having a magnetically actuated switch which is energized by a magnet on a floatation member which senses both specific gravity and th... | 07/13/1976 |
| 3954010 | Visual and electronic battery hydrometer A combined visual and electronic liquid indicator which may be used as a battery hydrometer is disclosed. An outer housing of a generally cylindrical shape receives a centrally located elongated light transmitting viewing rod. The lower portion of the rod... | 05/04/1976 |
