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| Number | Title | Issue Date |
| 4237452 | Smoke detection system and method A smoke detector is provided in which two light sources are employed in conjunction with a single photo responsive device and control circuit elements adapted for sequential operation of the light sources. One light source is directed at the photo respons... | 12/02/1980 |
| 4237453 | Smoke detection system and method A smoke detector is provided in which two light sources are employed in conjunction with a single photo responsive device and control circuit elements adapted for sequential operation of the light sources. One light source is directed at the photo respons... | 12/02/1980 |
| 4233356 | Material for waterproofing bridge decks and the like Concrete bridge decks are waterproofed by first applying a primer over sound, dry and clean concrete which forms the bridge deck. A laminated membrane is then installed over the primed concrete surface, the membrane being comprised of reinforced cured and... | 11/11/1980 |
| 4232657 | System for use with solar collector A system is provided for use with a solar collector. The system includes a water storage tank having a heat exchange element mounted therein, the tank being connected to one or more solar collectors adapted to heat water circulated through a primary loop ... | 11/11/1980 |
| 4232725 | Pass-through weather curtain for garages and the like A curtain is provided for use across the doorway of a garage, or the like, through which vehicles may pass easily but which substantially blocks out ambient weather conditions. The curtain provides a barrier which retains building heat during the winter a... | 11/11/1980 |
| 4232731 | Passive solar device for heating and cooling A thermal control and storage unit, in the general form of a Venetian blind for location at windows and the like, comprises vanes of polygonal cross-section, having facets that selectively control radiative and other heat transfer in different orientation... | 11/11/1980 |
| 4233512 | Thermometer for remotely measuring temperature A thermometer is provided for remotely measuring the temperature of a heat source. The device utilizes an infrared sensor for detecting the temperature of a remote object and an output of the sensor is processed and used to drive a meter or other display ... | 11/11/1980 |
| 4231425 | Extracorporeal circuit blood heat exchanger A heat exchanger is provided for use in a blood handling system whereby the blood may be selectively heated or cooled, as required by the nature and stage of the operation. The heat exchanger, in the preferred embodiment, is in the form of a cylindrical h... | 11/04/1980 |
| 4228602 | Ski boot attachment A walking attachment is provided for use with ski boots to permit booted skiers to walk upright on foot. The attachment is formed with a generally flat upper surface substantially coextensive with the length and width of the boot sole, while the bottom su... | 10/21/1980 |
| 4229232 | Method involving pulsed beam processing of metallic and dielectric materials A pulsed beam generator produces a short duration pulsed beam for thermal processing of selected regions of metallic and dielectric materials. The pulse beam is directed towards the material and irradiates selected surface regions thereof. Energy deposite... | 10/21/1980 |
| 4226072 | Apparatus for applying a film lid to a cup Apparatus is provided for automatically applying a lid comprised of a film of thermoplastic sheet material to the top of a cup. The film is supplied in a roll and the leading end is fed into a position between the top of the cup and a heat sealing head. I... | 10/07/1980 |
| 4225139 | Domino type game apparatus Game pieces comprised of three legged tiles are provided for use in a domino-type game. A set of tiles is utilized for the game, each set comprised of a number of three legged tiles most of which are marked with different numerical indicia in the form of ... | 09/30/1980 |
| 4223930 | Security device for window locks A security device is provided for installation on double hung windows to prevent the window lock from being jimmied open from the outside and to tighten the windows sashes to the frame as well as to each other when locked. The device is in the form of a g... | 09/23/1980 |
| 4222363 | Draft tube for wood burning stoves A draft tube in a wood burning stove is provided with a nozzle at the lower end thereof for directing a portion of the draft air downwardly against the charge of burning wood, coal, etc. and deflects a portion thereof sideways into a zone above the fuel t... | 09/16/1980 |
| 4219021 | Multi-position stop-cock valve for intravenous administration of multiple medications Multi-position stop-cock valves for use in the intravenous administration of different medications are provided with integral color codes on the valve body and the valve handles whereby the valve position and the medication flow through the valve will be ... | 08/26/1980 |
| 4219789 | Stereo headphone adapter An adapter is provided which permits the use of a stereo headset with a monaural radio receiver. The adapter is in the form in a self-contained unit having a plug and a jack, the plug being insertable in the jack of the radio receiver while the jack accom... | 08/26/1980 |
| 4216762 | Combined structural support and solar energy system A combined structural support and solar energy system with parallel joists having tubular upper chords defining conduits through which a fluid circulates for collection of solar energy and tubular lower chords defining conduits through which a fluid circu... | 08/12/1980 |
| 4214835 | Spectrometer sequential readout system A spectrometer readout system with storage capacitors for temporarily storing output signals generated by a series of photomultiplier tubes that are positioned to monitor selected spectral lines. A voltage-time converter sequentially discharges the capaci... | 07/29/1980 |
| 4210903 | Method for producing analog-to-digital conversions Analog signals are converted into digital form in a reproducible, accurate and stable manner. The tri-dual phase technique involves the conversion of the condition to be measured, and typically represented by a voltage, first to a reference level and then... | 07/01/1980 |
| 4205677 | Cardiotomy suction control system and valve A suction control system is provided for use by surgeons in recovering blood from a patient during the course of a surgical operation. A blood suction line extends from a pick-up tube, which is placed in the blood pool of the patient, to a cardiotomy rese... | 06/03/1980 |
| 4205587 | Self-locking anchoring bolt A self-locking anchoring bolt provided with a shank portion to be fitted in a bolt hole, provided with an elongated locking element disposed in a correspondingly formed location which extends substantially helically in the bolt shank.... | 06/03/1980 |
| 4202883 | Vaccine for Tyzzer's disease in rabbits A vaccine for Tyzzer's disease in rabbits is produced from inactivated hepatic or intestinal tissue of immunosuppressed rodents which have been infected with Bacillus piliformis.... | 05/13/1980 |
| 4203035 | Method and apparatus for determining the condition of a biological specimen A computer controlled high resolution radiaoactivity distribution detection system is provided for sensing radioactive events in a biological specimen. The system includes a rotating disc memory which contains instructional data for controlling the comput... | 05/13/1980 |
| 4201270 | Roof bolter An operator controlled roof bolter with a flexible shaft drill and a roof bolt inserter for drilling and inserting a roof bolt into an unsupported roof of a mine while the operator is positioned at an outby station under a supported roof. The flexible sha... | 05/06/1980 |
| 4201613 | Method and apparatus involving adhesive backed photographs A pressure sensitive adhesive coating is applied to selected regions of one face of a release web, other regions of the one face being free of the adhesive coating. A photographic print is superposed on the release web face having the adhesive and the adh... | 05/06/1980 |
| 4198540 | Compensated crossover network The signal from the crossover network of an audio output circuit is applied to certain of the audio system's low, middle and high frequency speakers through particular compensation circuits that are associated with the crossover network and the speaker dr... | 04/15/1980 |
| 4197583 | Image display system A display system in which a video signal derived from digital data is processed in a processor in order to produce an analog image of the digital data on a cathode-ray tube display by intensity modulation of the display beam according to an approximate tw... | 04/08/1980 |
| 4195919 | Contact lens with reduced spherical aberration for aphakic eyes Contact lenses, particularly for aphakic eyes, are characterized by a rear conicoid optical surface that is fitted to the cornea and a front prolate ellipsoidal optical surface of particular power, these surfaces having functionally related configurations... | 04/01/1980 |
| 4190988 | Method, system and components for preserving wooden gutters Wooden gutters are protected against the weather and their useful life extended by applying a flexible plastic liner along the trough of the gutter and closing the ends thereof with sealing caps. The liners and caps are tightly secured in place to prevent... | 03/04/1980 |
| 4190334 | Nose pad for eyeglass frames An inflated floating bridge piece is provided for use on eyeglass frames to increase comfort, reduce slippage and allow for height adjustment of the glasses. The bridge piece is in the form of a resilient, hollow member having one or more air chambers in ... | 02/26/1980 |
| 4187418 | Combination pedestrian sign and push button An integrated combination pedestrian sign and push button is provided for use particularly with respect to the mounting of pedestrian actuated switches for controlling traffic lights. A saddle is formed with a semi-cylindrical, longitudinally extending, c... | 02/05/1980 |
| 4186377 | Method and apparatus for monitoring tire pressure A method and apparatus are provided for monitoring tire pressure for motor vehicles, or the like, in which coded sound signals emitted from a wheel-mounted sound signal generator are detected and processed. The coded signal from the generator serves to di... | 01/29/1980 |
| 4179324 | Process for fabricating thin film and glass sheet laminate A semiconductor thin film and glass stratum laminate is formed by depositing a semiconductor thin film onto a temporary substrate having a carbon coating to which the film adheres. Processing of the semiconductor thin film for selected performance charact... | 12/18/1979 |
| 4178709 | Machine for use in pictorial drafting A machine is provided for use by draftsmen, illustrators and artists in making various axonometric or three dimensional drawings, such as isometric, dimetric, trimetric as well as perspective views. The machine includes a flat working surface which suppor... | 12/18/1979 |
| 4177766 | Heat recovery system for furnaces and the like A modular, heat recovery system is provided for use with furnaces, boilers, and the like where otherwise waste exhaust heat is utilized to heat water for home or apartment use. This system includes a plurality of modular pipe loop sections interconnected ... | 12/11/1979 |
| 4174847 | Precision centering device A precision centering device with a pair of relatively movable plates forming a guideway for four relatively movable guides. A tapered centering port having a rectangular profile is formed by the guides which are constrained for mutual coacting movement b... | 11/20/1979 |
| 4171608 | Safety attachment for lawn mowers A safety attachment is provided for use with a rotary lawn mower to prevent substantial injury to anyone whose extremity may accidentally strike the cutter. The attachment includes a relatively large annular disc mounted to the drive shaft of the motor fo... | 10/23/1979 |
| 4167110 | Devices and processes for determining properties of viscous fluids Testing of rheological properties of a fluid is performed between a pair of members having cooperating faces, each characterized by minute, randomly interspersed land portions and cavity portions. The land portions of each face are planar and are disposed... | 09/11/1979 |
| 4164212 | Devices for menstrual cycle phase determination An instrument for obtaining and testing a bodily mucus for determining the rheological properties of the bodily mucus in order to ascertain menstrual cycle phase comprises a sample collecting probe and a bearing member. A mucus sample from a bodily cavity... | 08/14/1979 |
| 4157709 | Probe for obtaining cervical mucus and process thereof A probe is provided for inserting a test element into the vaginal cavity while shielding it from intermediate vaginal contact, for positioning the test element precisely in contact with the cervical os in order to collect a specimen of cervical material t... | 06/12/1979 |
