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| Number | Title | Issue Date |
| 5390808 | Filler tube for liquid containers The present invention relates to filler tubes and, more particularly, to fuel filler tubes and methods of attaching them to automobile fuel tanks. The fuel filler tube of the present invention includes an inlet tube, a retainer member, sealing means and a... | 02/21/1995 |
| 5198924 | Optical component coupling and composition therefor An optical coupling fluid which is transmissive to light, is a polymerized (cured) gel prepared from a mixture of two silicon components, one a silicon oil and one a silicon gel. The miscible substances can be combined to provide a composition suitable fo... | 03/30/1993 |
| 5152934 | Mixing system for gas dispersion in liquids or liquid suspensions In order to obtain efficient gas dispersion (aeration where air is the gas) in mixing systems where the circulating impeller is offset from the center of the tank containing the medium in which the gas is dispersed or sparged while being circulated, flood... | 10/06/1992 |
| 5007018 | Vital processor implemented with non-vital hardware The invention describes a method and apparatus for effecting vital functions notwithstanding the fact that non-vital hardware is employed. A vital processor is implemented using non-vital hardware in the form of a digital computer which may for example be... | 04/09/1991 |
| 4974370 | Lapping and polishing machine This invention relates to a complete double lap lapping and polishing machine particularly to an apparatus designed to finish to a required thickness and/or finished polish workpieces such as thin silicon and/or ceramic wafers. The machine includes improv... | 12/04/1990 |
| 4883000 | Stub axle truck A truck having a pair of wheels mounted by individual stub axles to longitudinal members of a frame. Lateral members of the frame received the forces from the wheels via the longitudinal members and forces from the car via air springs mounted to the later... | 11/28/1989 |
| 4860498 | Automatic workpiece thickness control for dual lapping machines A device for automatically sizing (thickness control) a workpiece of a double wheeled lapping machine, during the lapping process with simultaneous runout of the lower lap compensation. The device provides an annular ring attached in parallelism to the up... | 08/29/1989 |
| 4808807 | Optical focus sensor system An optical focus sensing system is disclosed. The system provides a focus shift measurement capability utilizing the relative motion between two gratings to produce different diffraction orders which are separately detected by a pair of detectors to form ... | 02/28/1989 |
| 4802771 | Mixing apparatus Apparatus for mixing or circulating a liquid or a liquid suspension (slurry) to provide efficiently, high head so as to enable slurries which are viscous or contain large or heavy particles or tend to agglomerate to be mixed or circulated, uses an impelle... | 02/07/1989 |
| 4780991 | Mask and pressure block for ultra thin work pieces A mask for use in conjunction with a lapping platen for working an ultra thin work piece with the mask formed to provide circumferentially arranged open receptive areas corresponding to the configuration of the work piece together with a pressure block of... | 11/01/1988 |
| 4768065 | Table stabilization assembly A table stabilization assembly is disclosed. The assembly is intended for use in a microlithography system which includes a stable for supporting a movable stage and a frame support for supporting the table. The assembly includes a pair of brake leaves wh... | 08/30/1988 |
| 4751636 | Memory management method and apparatus for initializing and/or clearing R/W storage areas A method for vital memory management of data. A method is disclosed for clearing on specified conditions and for assuring the clearing is effected. Both random access and stack operation are implemented. Clearing the memory area requires reading the conte... | 06/14/1988 |
| 4720938 | Dressing fixture A fixture for dressing the polishing surfaces of a platen to maintain it in a planar condition, including a flexible carrier which is adapted to be rotated independently of the rotation of the surface to be dressed, with the carrier providing an opening f... | 01/26/1988 |
| 4590602 | Wide range clock recovery circuit A wide range, variable rate clock recovery circuit for NRZ data is provided having a PLL and a frequency synthesizer which share control of a common VCO in single loop realization. Narrow PLL bandwidths and short acquisition time may be achieved employing... | 05/20/1986 |
| 4563762 | Vital communication system for transmitting multiple messages A vital communication system includes a conventional, that is non-vital, communication link, a transmitter and a receiver. The transmitter is responsive to input data, and provides for encoding and transmission as well as checking of its own input arrange... | 01/07/1986 |
| 4477053 | Shut-off valve for high temperature erosive flow A shut-off valve for high temperature erosive flow is disclosed having a valve and a valve engaging or seating portion in which substantial erosion of an area beginning at its initial erosion point adjacent the valve seat does not erode the valve seating ... | 10/16/1984 |
| 4441764 | Relay valve assembly A fluid system for the rail brake cyclinder of a highway/rail vehicle including a control valve responsive to brake pipe pressure drops to provide a control signal to a variable load relay valve assembly which provides brake cylinder pressures. The relay ... | 04/10/1984 |
| 4430963 | System for generating dry coal weight signal for coal feeder and control system based thereon A system for generating a dry coal weight signal is provided, wherein the moisture content of a coal feed to a solid fuel burner is determined, and the dry coal weight calculated on that basis. Moisture content is determined by measuring density of the co... | 02/14/1984 |
| 4422290 | Hydraulic control system for governing steering and implement actuators Implement and steering actuators are selectively actuated through steering and implement control valves respectively by fluid power output of respective steering and implement pumps. A pressure compensator is provided for at times diverting excess fluid f... | 12/27/1983 |
| 4421414 | High efficiency mixing method The high efficiency mixing method uses an impeller with a central axial hub adapted for attachment to a rotatable driven shaft of a mixer motor. Under certain operating conditions, the method has a higher mass transfer efficiency, in both directions of ro... | 12/20/1983 |
| 4398696 | Butterfly valve This invention concerns a butterfly valve having a resilient, adjustable seat for pivoting disc. The seat comprises an elastomeric seating attached to a clamping ring which slides along the walls of the first portion of the flow passage extending through ... | 08/16/1983 |
| 4395712 | Linear detection of a DME signal A DME receiver is arranged to produce, at baseband, a linear replica of an RF input, over relatively wide dynamic range. The DME receiver receives a local oscillator signal from the associated transmitter which is mixed (in a first mixer) with the RF inpu... | 07/26/1983 |
| 4391293 | Packing for equalizing reservoir cut-out valve The packing for elements of a valve subject to reversal of differential pressure includes a pair of spaced packings with a recess there-between connected to atmosphere to eliminate reversal of differential pressure across individual packings of the pairs.... | 07/05/1983 |
| 4384286 | High speed graphics A display processor for displaying complex curves includes an initiating processor, responsive to indicia selection signals for producing signals representing at least one coordinate on said indicia, and recursive processor means responsive to said initia... | 05/17/1983 |
| 4364621 | Electrical connector An electrical connector has a body of molded insulating material for fixedly holding a plurality of electrical conductors in the body. The connector body has openings with axial and radial passageways provided for axially or radially inserting or removing... | 12/21/1982 |
| 4352475 | Audio frequency track circuit for rapid transit applications with signal modulation security An audio frequency track circuit with improved security in the train detection function for rapid transit applications for use with uninsulated rails includes an improved transmitter and receiver. The transmitter modulates a track frequency carrier with a... | 10/05/1982 |
| 4300882 | Industrial furnace with side wall ceramic insulating modules An industrial furnace with insulating walls comprising side-by-side pre-formed panels each including a plurality of ceramic insulating modules. The side wall panels include vertical buckstays to which the modules are secured by retainer clips including sh... | 11/17/1981 |