Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 4055219 | Electric tip-off heat sink During the construction of display gas panels front and back panels are connected together by means of a seal which forms a chamber for receiving a display gas. A hole is provided in the back plate which is outside the display viewing area and a glass tub... | 10/25/1977 |
| 4052854 | Heat transfer interface between a high temperature heat source and a heat sink A heat-transfer interface between and separating a high temperature heat source and a heat sink is formed by the adjacent walls of the heat source and heat sink with a thin gap between these walls and helium gas sealed in the gap, the walls preferably def... | 10/11/1977 |
| 4041524 | Heat dissipating device for transistor with outwardly extending heat conductive tab The device comprises a body portion formed of a pair of substantially parallelly situated planar members spaced to receive the tab therebetween such that the interior surface of each member is parallel to and in engagement with the exterior surface of the... | 08/09/1977 |
| 4022272 | Transmission fluid heat radiator The heat radiator takes the form of an extruded member defining parallel fins on its bottom surface and having a flat top surface arranged to be cemented directly to the bottom surface of a transmission fluid pan in an automobile. A special cement having ... | 05/10/1977 |
| 4021523 | Method of extruding plastic film A method of extruding plastic film is provided which employs a die comprising a die body having an inlet therein for receiving a plastic melt under pressure and having an annulus in the die in flow communication with the inlet and having a discharge orifi... | 05/03/1977 |
| 4012770 | Cooling a heat-producing electrical or electronic component Vapor chamber-containing apparatus is provided for cooling heat-producing electrical and electronic components wherein the heat is absorbed by a vaporizable agent.... | 03/15/1977 |
| 4009752 | Warp-resistant heat sink A warp-resistant heat sink suitable for soldering to one side of a relatively fragile, ceramic semiconductor substrate comprises a plate of heat-conducting material having a plurality of slits along two sides thereof, and a plurality of U-shaped heat-cond... | 03/01/1977 |
| 4001944 | Freeze-drying process A process is provided for freeze-drying an aqueous liquid product which comprises distributing the liquid product in containers closely fitted in cavities of a tray-shaped heat-conducting solid metal block having relatively high heat transfer, subjecting ... | 01/11/1977 |
| 3999602 | Matrix heat exchanger including a liquid, thermal couplant A tube-to-tube heat exchanger is disclosed with a thermally conductive matrix between and around the tubes to define annuli between the tubes and matrix. The annuli are filled to a level with a molten metal or alloy to provide a conductive heat transfer p... | 12/28/1976 |
| 3999403 | Thermal interface for cryogen coolers An infrared receiver having a thermal conductive device for providing continuous thermal contact between a detector cooling means and an IR detector is disclosed. The thermal conductive device is bellows shaped and constructed from laminated layers of cop... | 12/28/1976 |
| 3972821 | Heat transfer composition and method of making A heat transfer composition, consisting essentially of an epoxy resin, a high temperature curing agent therefor, nitrile rubber, polybutene, particulate heat transfer coefficient-increasing filler and a cold flow control agent such as asbestos.... | 08/03/1976 |
| 3965973 | Temperature sensing device A conductive heat transfer mechanism through which energy readily flows between two bodies or systems at different temperatures. The present mechanism is embodied in a temperature sensing network for determining and controlling the surface temperature of ... | 06/29/1976 |
| 3965378 | Pole coil for electric machines and apparatus A pole coil wherein improved heat transfer at cooling fins thereof is achieved and includes cooling fins which are subdivided in the longitudinal direction into short portions which are bent out so that they are disaligned with each other. The pole coil i... | 06/22/1976 |
| 3949263 | Diamond brazing method for slow wave energy propagating structures Diamond heat sink members are now employed to conduct thermal energy from slow wave structures in traveling wave type interaction devices to permit operation at high power levels. The diamond members are bonded to adjacent desired components by a method i... | 04/06/1976 |
| 3942584 | Hot water pump with cooled sealing housing This invention relates to an improvement in a hot water pump having a cooled sealing housing in a pump cover in the upper pump portion. The improvement comprises means mounting the sealing housing in a recess of the pump cover in a manner such that an ann... | 03/09/1976 |
| 3943323 | Bonding apparatus A bonding head for connecting the electrically conductive leads of a tape cable or the like to other electrical conductors. The bonding head, which applies heat and pressure to the electrical conductors and leads to bond them together, is an elongated mem... | 03/09/1976 |
| 3941512 | Ventilating arrangement for steam flow vacuum pump A steam flow vacuum pump has a grooved cylindrical pump body surrounded by a housing having a radius slightly greater than the pump body and a high-power ventilator pulsating the air in the housing. The housing is provided with vents on the opposite side ... | 03/02/1976 |
| 3932103 | Die for extruding plastic film A die for extruding plastic film is provided wherein such die comprises a die body having an inlet therein for receiving a plastic melt under pressure and having an annulus in the die in flow communication with the inlet and having a discharge orifice for... | 01/13/1976 |
