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A haircutting appliance comprises an enclosed housing having a hollow handle connecting the housing to a vacuum source to carry away cut hairs from a subject's head.
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| Number | Title | Issue Date |
| 4932059 | Variable matrix decoder for periphonic reproduction of sound An interface circuit for inclusion in the control signal path of a variable matrix decoder wherein the attack and decay time constants imposed on said control signals may be varied by means of an auxiliary circuit which responds to the total signal level ... | 06/05/1990 |
| 4912738 | Magnetically energized pulser A diode pulser is described which comprises a diode and an inductor connected in series, the impedance of the diode being controllable to suddenly increase the impedance to produce a high voltage pulse across the diode. The diode includes concentric elect... | 03/27/1990 |
| 4907302 | In-field installable closing delay cup An improvement is provided for toilet flush valves on tanks which contain insufficient water to flush properly, which leads to waste of water by double flushing. The improvement enables in-field modification of the flush valve to substantially completely ... | 03/13/1990 |
| 4906211 | Connector for aircraft-to-ground maintenance electrical connection A socket assembly is provided at the end of a heavy electrical cable which includes sockets designed to be pushed into connection with pins on an aircraft, to pass current between them, which provides low resistance to avoid heating while also providing a... | 03/06/1990 |
| 4889423 | Conversion of high to low frame rate motion picture films A method is described for converting a strip of film designed for showing at 60 fps (frames per second) to a film that can be shown at 24 fps. Instead of forming the 24 fps film so it alternately contains every second and every third frame of the 60 fps f... | 12/26/1989 |
| 4890094 | Wallet incorporating credit card alarm system A nonrigid wallet structure formed by a flexible dielectric sheet carrying planar conductive material thereon and configured to define card accommodating compartments. The planar conductive material extends into the compartments and forms a card monitorin... | 12/26/1989 |
| 4886065 | In vivo electrode implanting system A cylindrical intramuscular implantable electrode is provided with a strip of fabric secured around it. The fabric is woven from a polyester fiber having loops of the fiber protruding. The end of the main cylindrical body is provided with a blunt conducti... | 12/12/1989 |
| 4884246 | Method and apparatus for reflection mode imaging A volume is scanned with a raster scan about a center of rotation using a transmitter/receiver at a selected range while gating a range window on the receiver with a selected range differential. The received signals are then demodulated to obtain signals ... | 11/28/1989 |
| 4884070 | Method and apparatus for multiplexing switch signals Apparatus for multiplexing switch state signals comprises a plurality of switches and parallel weighted resistors connected in series between circuit ground and a node at a utilization device. The resistors are weighted as a function of a power of the sam... | 11/28/1989 |
| 4884084 | Chart recorder A chart recorder is described, which is especially useful in recording the temperature of a cargo being shipped, which can be constructed at low cost and which provides a tamper-resistant and accurate record. The recorder includes a strip of pressure-mark... | 11/28/1989 |
| 4882591 | Base loaded antenna A base loaded antenna is provided, which securely holds the inductive loading coil of the antenna while minimizing capacitive coupling of adjacent coil turns. A coil support has fins with grooves that hold the coil, so most of the space between adjacent c... | 11/21/1989 |
| 4878016 | Soldering iron testing method and apparatus A method and apparatus for testing three wire handheld soldering irons by touching the iron's tip to a single point sensor to measure (1) tip temperature (2), tip voltage to ground and (3) tip resistance to ground.... | 10/31/1989 |
| 4878155 | High speed discrete wire pin panel assembly with embedded capacitors Decoupling capacitance is provided with negligible inductance in a high speed discrete wire logic panel by the use of SMT (surface mounting) capacitors that are mounted in holes in the circuit board. A hole is formed in the circuit board under each locati... | 10/31/1989 |
| 4876668 | Thin film memory matrix using amorphous and high resistive layers Memory cells in a matrix are provided by a thin film of amorphous semiconductor material overlayed by a thin film of resistive material. An array of parallel conductors on one side perpendicular to an array of parallel conductors on the other side enable ... | 10/24/1989 |
| 4874953 | Method for generation of tunable far infrared radiation from two-dimensional plasmons Tunable far infrared radiation is produced from two-dimensional plasmons in a heterostructure, which provides large inversion-layer electron densities at the heterointerface, without the need for a metallic grating to couple out the radiation. Instead, a ... | 10/17/1989 |
| 4868828 | Architecture for time or transform domain decoding of reed-solomon codes Two pipeline (255,233) RS decoders, one a time domain decoder and the other a transform domain decoder, use the same first part to develop an errata locator polynomial ͌(x), and an errata evaluator polynominal A(x). Both the time domain decoder and trans... | 09/19/1989 |
| 4862537 | Portable bed stiffener A bed stiffener is provided which is of simple and rugged construction and which can be stowed in a relatively compact configuration. The bed stiffener includes three boards that are all of about the same width, including a middle board whose opposite sid... | 09/05/1989 |
| 4852728 | Oral hygiene device A disposable single use package comprised of a short length of dental floss integrated in a sanitary packet. The packet is formed by first and second members releasably attached to one another to form a sanitary interior compartment for accommodating the ... | 08/01/1989 |
| 4850492 | Conveyor system ejector wheel An ejection station for a conveyor sorter having a carrousel ejector wheel with reciprocating fingers. The ejector wheel has a front side mounted adjacent the edge of the supply conveyor belt. The bottom of the wheel moves at substantially the same speed ... | 07/25/1989 |
| 4842522 | Training shoelace A shoelace is described for use by young children or the handicapped, which facilitates tying of a bow. The shoelace has opposite end portions which are just stiff enough to substantially retain the shape to which they are bent while permitting children t... | 06/27/1989 |
| 4843526 | Flashlight with switch assembly An adjustable focus flashlight comprising three units: a head, a replaceable switch unit, and a battery unit. The replaceable switch unit includes a switch assembly having two holes in one end for bulb leads, and a holder near that end for storing a spare... | 06/27/1989 |
| 4841528 | Frequency doubled, cavity dumped feedback laser Higher efficiency in cavity dumping and frequency doubling in a laser used to produce modulated output beam pulses is achieved by deflecting light out of the resonant cavity to a third mirror through a frequency doubler using an electro-optic modulator an... | 06/20/1989 |
| 4837682 | Bus arbitration system and method A bus arbitration system for use in a data processing system which operates on clocked cycles for determining priorities in accessing a system memory and one or more local memories associated with processor units is shown. Each of the processor units are ... | 06/06/1989 |
| 4837678 | Instruction sequencer for parallel operation of functional units An instruction sequencer for programming parallel operations of functional units in response to an instruction stream is shown. The instruction sequencer includes a random access memory for storing instruction segments which program the operations of the ... | 06/06/1989 |
| 4834608 | Railroad car for hauling large highway trucks and method of loading A railroad car having an extraordinary height is more efficiently utilized for hauling large highway trucks, each having a cab but no body on the frame behind the cab. Raised platforms are provided for the trucks along both sides of a railroad car, leavin... | 05/30/1989 |
| 4834284 | Hot water control A system is described for use with a hot water supply for hotels, apartment buildings and similar multi-unit structures, which controls the temperature T1 of water at the outlet of a water tank to make it close to a desired temperature DTEMP th... | 05/30/1989 |
| 4834104 | Method and apparatus for measuring specific gravity of a flowing liquid A method and apparatus for continually measuring the specific gravity of a flow liquid. The liquid is caused to flow across a flat measurement surface defined by a light transmissive shelf member. The measurement surface, i.e. the interface between the sh... | 05/30/1989 |
| 4835792 | Universal FM receiver for mobile communications A dual purpose receiver operable both on FM analog (voice) and MSK digital (data) signals has a demodulation section having a selectable time delay D1 for processing MSK digital signals and a time delay D2 for processing FM analog si... | 05/30/1989 |
| 4833523 | Chroma crawl elimination without any cumulative difference in frame time Chroma crawl, and a 15 Hz component introduced by the NTSC subcarrier pattern repeated every four fields, is obviated by adding to and substracting from the horizontal and vertical sync timing of alternate frames the period of one half cycle of the color ... | 05/23/1989 |
| 4832259 | Hot water heater controller A system is described for use with a hot water supply for hotels, apartment buildings and similar multi-unit structures, which controls the temperature T1 of water at the outlet of the water tank that circulates past the units and back to the t... | 05/23/1989 |
| 4832305 | Equipment support system A system includes a single snubber and a rigid strut, to support two spaced locations on equipment to a structural support, in a manner that allows each location of the equipment to slowly move independently of the other, as to accommodate changing equipm... | 05/23/1989 |
| 4831470 | Method and apparatus for recording disk servo information with detachable position decoder A method and apparatus for originally recording servo information on a disk surface. The apparatus comprises a servo writer assembly which includes an optical encoder having a movable input member and means for producing an output signal which indicates s... | 05/16/1989 |
| 4828225 | Power cable retriever An apparatus is provided for use at an airport for drawing in and paying out an electric cable, which reliably grips the cable even when it is covered with a slippery anti-freeze fluid used at airports. The apparatus includes a motor-driven traction wheel... | 05/09/1989 |
| 4828292 | Adjustable fluid swivel A fluid swivel is described, which enable the measurement and the adjustment of separation of seal surfaces. The fluid swivel includes inner and outer walls that are rotatably coupled about an axis and that form an annular chamber and a pair of gaps exten... | 05/09/1989 |
| 4825854 | Hydrotherapy massage method and apparatus A hydrotherapy method and apparatus for discharging a fluid stream through an opening in the wall of a water tub, while concurrently translating the stream, to impact against and massage the body of a user.... | 05/02/1989 |
| 4825986 | Remotely controllable cable assembly A cable assembly is described, for safely connecting an electrical power source such as an electrical outlet at an airport, to a power consuming device such as an aircraft. The assembly includes an electrical cable (18) with a connector (16) at one end fo... | 05/02/1989 |
| 4823805 | Catheter incorporating strain relief A catheter including an internal sensing wire extending along most of the length of an easily stretched catheter body having a multifilament, strain relief line affixed in the catheter body parallel to said wire. The strain relief line has sufficient tens... | 04/25/1989 |
| 4822748 | Photosensor with enhanced quantum efficiency A method to significantly increase the quantum efficiency (QE) of a CCD (or similar photosensor) applied in the UV, far UV and low energy x-ray regions of the spectrum. The increase in QE is accomplished by overthinning the backside of a CCD substrate bey... | 04/18/1989 |
| 4822288 | Pin panel circuit board assembly A terminal system is described for use with circuit boards, which enables the terminals to be subsequently interconnected using any of a variety of point-to-point wiring methods. Each terminal includes a sleeve with a plated-through hole, the upper portio... | 04/18/1989 |
| 4821354 | Portable cooling pool, beach or car seat mat A mat for cooling a person on the beach, side of a swimming pool, and even in a vehicle, is provided with recirculated ice water from an insulated reservoir using a small battery powered pump. The mat is made of sheets of urethane coated nylon or PVC film... | 04/18/1989 |
