Venting, Absorption, Expansion Patents (Class 174/17VA)
  • Patent number: 6166327
    Abstract: A wire box including a main box having an outer surface with a water outlet therein. A wall is provided around the periphery of the outlet and projects outwardly from the surface in a direction substantially perpendicular thereto. There is a closure on the end of the wall furthest from the main box. There is at least one opening in the wall which communicates between the outlet and the exterior of the box. It is more desirable if there is a protective rib adjacent the opening and spaced apart therefrom a distant sufficient to allow water to run out of the opening. The form of the closure may be widely varied so that there is no direct path into and out of the main box for water to follow.
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: December 26, 2000
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Yukitaka Saito, Shinshu Kato
  • Patent number: 6147298
    Abstract: A breather assembly having an outer housing, an insert in the upper portion of the housing, a porous metal disc adjacent the insert, a plurality of glass beads adjacent the disc, a spacer cup adjacent the beads and a washer acting as a plug adjacent the spacer cup. The housing has an upper closed end and a lower open end, the washer being press fitted into the open end to retain the cup, beads, disc and insert. There are two oppositely disposed openings in the housing which directly communicate to abutting converging openings in the spacer. The junction of the narrow end of the converging openings communicate with a central vertical opening, a space between the insert and the housing, a recess in the insert, another vertical opening in the insert which is spaced from the first vertical opening. The bottom end of the spaced vertical opening communicates with the porous metal disc.
    Type: Grant
    Filed: December 8, 1998
    Date of Patent: November 14, 2000
    Assignee: EGS Electrical Group LLC
    Inventors: Nabil L. Mina, Richard Castillo
  • Patent number: 6143978
    Abstract: The present invention provides methods and compositions useful for heat absorption and dissipation, which include between about 10 percent and about 99 percent by weight of a bicarbonate compound and between about 90 percent and about 1 percent by weight of binder, and thermally protected enclosures including the same.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: November 7, 2000
    Assignee: AlliedSignal Inc.
    Inventors: Jane Ren, Christopher E. Osuch, Richard A. Olzak, Amanda L. Plyley
  • Patent number: 6130381
    Abstract: An electronic enclosure includes at least one wall coated with an intumescent fire retardant paint to prevent the spread of flame through the enclosure. The enclosure includes a wall having a plurality of apertures for allowing air to flow through the enclosure. The wall and the apertures are coated with intumescent fire retardant paint to constrict the apertures when the wall is subjected to elevated temperatures due to fire, to thereby minimize the flow of air through the apertures and prevent the spread of flame through the wall.
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: October 10, 2000
    Assignee: Alcatel USA Sourcing, L.P.
    Inventors: Scott M. Keith, Dimitri T. Medina, Steve Tollefson, Shawn M. Legas
  • Patent number: 6097596
    Abstract: Heat transfer through a heat pipe from a heat source on one side of a hinge to a heat dissipation capability on the other side of the hinge is achieved by providing a rotatable coupler with a thermal transfer body mounted on the side of the hinge away from the heat source and wherein a rotational interface surface area between the thermal transfer body and the heat pipe is larger than the outside of the heat pipe.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: August 1, 2000
    Assignee: International Business Machines Corporation
    Inventors: Thomas Mario Cipolla, Lawrence Shungwei Mok
  • Patent number: 6078011
    Abstract: Methods for heat absorption and heat dissipation, by enclosing a heat sensitive device with between about 10 percent and about 99 percent by weight of a bicarbonate compound. The bicarbonate compound is optionally combined with between about 90 percent and about 1 percent by weight of binder.
    Type: Grant
    Filed: May 6, 1999
    Date of Patent: June 20, 2000
    Assignee: AlliedSignal Inc.
    Inventors: Jane Ren, Christopher E. Osuch, Richard A. Olzak, Amanda L. Plyley
  • Patent number: 6075206
    Abstract: A low point drain for draining accumulated water from electrical conduit systems that are located in non-hazardous environments is disclosed. The drain includes a threaded coupling suitable for connection to a tapped opening in an electrical conduit, or a conventional "T" or elbow fitting or an electrical enclosure or junction box. The drain also includes an end cap attached to the other end of the coupling, a safety washer and a screen assembly that is retained within the end cap. The end cap has an interior lip that defines an opening through which the water may drain. The screen assembly includes a grommet that is held securely against the coupling end and a frustoconical screen that protrudes through the end cap opening. When the drain is installed at a low point in the conduit system, condensate that forms in the system flows out the drain aperture and screen by the action of gravity.
    Type: Grant
    Filed: March 9, 1998
    Date of Patent: June 13, 2000
    Inventor: Patrick A. Walker
  • Patent number: 6075204
    Abstract: In a food processing plant electronics used to monitor and control various food processing methods are subject to harsh environmental conditions such as thermal shock, outside contaminants and condensation. An electronics enclosure for minimizing such problems places the electronics in an interior enclosure which is separated from and surrounded by an exterior enclosure. Dry nitrogen gas is input to the interior box to create an internal pressure greater than ambient pressure. The gas is vented to the exterior box which is also maintained at greater than ambient pressure. Thermal shock is reduced by spacing the internal and external boxes apart using thermally non-conductive spacers.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: June 13, 2000
    Assignee: The BOC Group, Inc.
    Inventors: Paul J. Celauro, John J. Leszcynski
  • Patent number: 6002584
    Abstract: In a high-temperature protective arrangement for an electronic device, which as such generates heat, the electronic device is enclosed by a heat protective enclosure provided with gaps for permitting heat removal by air convection. The heat protective enclosure is coated with a material which is subject to swelling under the action of heat to a multiple of the thickness of the original coating whereby a heat-insulating layer is formed and the gaps are closed. Electronic components of the electronic device are disposed within a housing. The heat generated by the electronic components is passed to the housing which is surrounded at a spacing substantially on all sides by the heat protective enclosure.
    Type: Grant
    Filed: May 14, 1998
    Date of Patent: December 14, 1999
    Assignee: Bodenseewerk Geratetechnik GmbH
    Inventors: Helmut Messmer, Wolfgang Kummle
  • Patent number: 5973261
    Abstract: This invention relates to a heat exchanger for electronic components and electrotechnical equipment, comprising a box defining an interior space through which a heat-transfer fluid passes, at least one face of said box oriented towards said components or equipment being covered with an electrically insulating plate, characterized in that said box and said plate are overmoulded with a covering of electrically insulating material and in that a spacer for expansion is disposed between said box and said insulating plate.
    Type: Grant
    Filed: January 29, 1998
    Date of Patent: October 26, 1999
    Assignee: FERRAZ a French Societe Anonyme
    Inventors: Jean-Luc Chevallet, Ivan Rubichon, Gerard Marichy
  • Patent number: 5932839
    Abstract: The present invention provides methods and compositions useful for heat absorption and dissipation, which include between about 10 percent and about 99 percent by weight of a bicarbonate compound and between about 90 percent and about 1 percent by weight of binder, and thermally protected enclosures including the same.
    Type: Grant
    Filed: November 4, 1997
    Date of Patent: August 3, 1999
    Inventors: Jane Ren, Christopher E. Osuch, Richard A. Olzak, Amanda L. Plyley
  • Patent number: 5878905
    Abstract: Switchgear, such as gas-insulated, metal-encapsulated high-voltage switchgear, is accommodated in a container. The container has a side wall formed with an opening. An outwardly opening flap closes the opening in the normal situation. Upon a sudden pressure increase in the container, caused for instance by arcing, the flap is automatically opened and the container is vented. A linkage with a damper is connected to the flap for damping a motion of the flap into the open position.
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: March 9, 1999
    Assignee: ABB Patent GmbH
    Inventors: Peter Gronbach, Friedrich Kraus, Thomas Gfollner, Helmut Loisel, Karl Purethmair
  • Patent number: 5789704
    Abstract: A container for an electronic control unit is provided for preventing heat transmission and entrance of water moisture at a low cost. An electronic control unit (1) is contained in a container (12) which is to be arranged in an engine compartment (2b). The container (12) includes a first box unit (14) and a second box unit (15). The first box unit (14) includes an inner box (20) for containing the electronic control unit (1) and an outer box (21) which defines a first heat removing space (32A) in cooperation with side walls (46a to 47b) of an upper portion of the inner box (20). The second box unit (15) is continuous with a bottom end of the outer box (21) of the first box unit (14) and defines a second heat removing space (32B) in cooperation with side walls (46a to 47b) of a lower portion of the inner box (20) and a bottom wall (48) of the inner box (20). The bottom end of the outer box (21) of the first box unit (14) and an upper end of the second box unit (15) are secured by welding.
    Type: Grant
    Filed: December 3, 1996
    Date of Patent: August 4, 1998
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventor: Shinji Kawakita
  • Patent number: 5773755
    Abstract: A double wall casing structure includes an inner casing for housing heat generating equipment and an outer casing surrounding the inner casing to form an air layer therebetween. One or more fans are provided in the air layer and are operated temperature-responsively for steering air within the air layer. At lest one selectively operable valve is located in the outer casing. The valve is adapted to be automatically closed/opened responsive to sensed temperature conditions.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: June 30, 1998
    Assignee: NEC Corporation
    Inventor: Misao Iwatare
  • Patent number: 5767440
    Abstract: The present invention provides an enclosure for housing a circuit breaker therein which utilizes a flange system to prevent enclosure components from separating from each other when an electrical fault occurs therein. The flange system includes flanges, on enclosure walls and doors, which slide into corresponding channels and interlock therein to prevent the components from separating and hot gases from escaping the enclosure when an electrical fault occurs.
    Type: Grant
    Filed: December 12, 1995
    Date of Patent: June 16, 1998
    Assignee: Square D Company
    Inventors: Eldridge R. Byron, Gregory O. Motley
  • Patent number: 5692637
    Abstract: A differential pressure sensor having a vent to atmosphere and mounted where it is subject to water spray has a vent cap which protects against spray entering the vent and prohibits water residing along the cap edges from being drawn into the vent. The vent is surrounded by an upstanding collar and the vent cap snaps onto the collar. A shroud extends laterally from one side of the cap to a point beyond the sensor package and further extends down below the upper surface of the package. The shroud is open at the bottom to afford an air passage to the vent as well as a baffle against spray.
    Type: Grant
    Filed: May 10, 1996
    Date of Patent: December 2, 1997
    Assignee: Delco Electronics Corporation
    Inventor: Ronald Curtis Hodge
  • Patent number: 5668349
    Abstract: A roof vent for preventing the buildup of hydrogen gas produced by battery charging in a remote digital telephone cabinet is provided with a movable splash guard for blocking the vent outlet when impinged upon by water and/or wind, thereby preventing the entry of water into the cabinet. The vent also includes a weatherproof cover whose lower edge is formed with scallops or undulations to maintain air gaps between the cover and the cabinet roof.
    Type: Grant
    Filed: January 18, 1996
    Date of Patent: September 16, 1997
    Assignee: Hubbell Incorporated
    Inventors: James H. Durham, Wilfred L. Gleadall, Richard A. Carmichael, Ray E. Medcalf
  • Patent number: 5650591
    Abstract: This invention aims to provide a waterproof casing which can keep its waterproof function under a great change of temperature. In the waterproof casing, a lid (20) which covers an opening in a body (10) is provided with a pipe (24) which intercommunicates an interior and an exterior of the casing. A porous waterproof filter (25) closes a port (24a) in the pipe (24). Air in the body (10) is expanded and contracted under changes in temperature. However, only air can pass through the filter (25) into and out of the body (10) with water being precluded, thereby waterproofing the interior of the casing.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: July 22, 1997
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Yasuo Matsushita, Tatsuya Sumida
  • Patent number: 5649859
    Abstract: A circumference wall is provided on a slant surface of a case. A cylindrical portion with a through hole for communicating the inside of the case to the outside is protruded inside the circumference wall. A shaft loosely fitted into the through hole is vertically provided from a reversely recessed cap. A falling out preventing portion for preventing the shaft from falling out the through hole is formed at the lower end of the shaft while a gap to the rear surface of the upper plate is secured. A communicating hole communicating with the gap between the shaft and the through hole when the falling out preventing portion is closely brought into contact with the rear surface of the upper plate, is provided on the falling out preventing portion. An outer circumference wall covered on the outside of the circumference wall and disposed to form a gap to the slant surface is vertically provided on the cap.
    Type: Grant
    Filed: December 27, 1995
    Date of Patent: July 22, 1997
    Assignee: Yazaki Corporation
    Inventor: Masaaki Shiga
  • Patent number: 5629495
    Abstract: A waterproof box-like casing including, a box-like body having an opening, a lid for closing the opening and having a communication hole, and a bulkhead member for covering the communication hole hermetically. The communication hole provides communication between the inside and outside of the box-like body. Furthermore, the bulkhead member expands volume when the air inside of the waterproof box-like casing expands because of thermal expansion and contracts volume when the air inside of the waterproof box-like casing contracts because of thermal contraction.
    Type: Grant
    Filed: February 16, 1994
    Date of Patent: May 13, 1997
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Tatsuya Sumida, Yasuo Matsushita, Yuichi Akiyama
  • Patent number: 5600090
    Abstract: A computer dust filter cover comprises an open cell synthetic foam sheet formed into a bonnet-like arrangement by an elastic strap. The cover is readily attached and removed from the computer housing front or side panels to cover the disc slots while the computer is in use and without interfering with the use of the computer. The cover can remain in place when the computer is not in use to protect the interior of the housing and parts therein from contamination by particulates at all times.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: February 4, 1997
    Inventor: Jonathan Morris
  • Patent number: 5576937
    Abstract: A connector for protecting an IC comprising a connector body, a closed plate, and an annular air-tight sealing material. An air-tight chamber is formed centrally of the annular air-tight sealing material by compressing the annular air-tight sealing material between the connector main body and the closed plate. The IC is received in the air-tight chamber so as to be electrically contacted with the connector body.
    Type: Grant
    Filed: April 19, 1994
    Date of Patent: November 19, 1996
    Assignee: Yamaichi Electronics Co., Ltd.
    Inventor: Masaaki Kubo
  • Patent number: 5369387
    Abstract: A power coupling assembly for superconducting magnets includes a conduit with insulating tubes around each power lead, with the tubing passing through a plug at the upper end of the conduit and extending only part way to the lower end. Cryogen gas flowing from the magnet chamber into the conduit is forced to flow through the multiple tubes to cool the leads.
    Type: Grant
    Filed: May 11, 1992
    Date of Patent: November 29, 1994
    Assignee: General Electric Company
    Inventors: Daniel C. Woods, William S. Stogner
  • Patent number: 5334799
    Abstract: A watertight casing for electronic apparatus includes a first case, a second case and a cover. Sealing members are interposed between the first case and the second case, and between the second case and the cover, respectively. The first and the second cases and the cover are fastened tightly together. A printed board mounts electronic parts on one side thereof, and an air-zinc battery on the other side. The first case is provided with a recess portion into which the electronic parts on the printed board are received. Another sealing member is interposed between the second case and the other side of the printed board. The second case is provided with a through hole which is closed by the cover. The battery is received in the through hole in a sealed manner. The second case is further provided with a vent hole communicating the through hole with an atmosphere.
    Type: Grant
    Filed: May 18, 1992
    Date of Patent: August 2, 1994
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshihisa Naito, Takahiro Hayashi
  • Patent number: 5291168
    Abstract: Power couplings are provided from outside the shell of a superconducting magnet through the intervening space and through the cryogen pressure vessel to the magnet coils within the vessel. The multi-pin shim magnet connector is replaceable without cutting the vessel open and the shim and main magnet main coil connectors include central apertures through which cryogen boil-off gas is flowed before venting to cool the connectors and reduce boil-off.
    Type: Grant
    Filed: May 11, 1992
    Date of Patent: March 1, 1994
    Assignee: General Electric Company
    Inventors: Daniel C. Woods, William S. Stogner, David R. Turner
  • Patent number: 5248848
    Abstract: An electronic device package includes a portion that functions as a membrane to allow small molecules, such as gas molecules, to relatively freely traverse the housing boundary, while simultaneously substantially preventing large molecules, such as liquid molecules, from entering the confines of the housing. As a result, the package can be readily used in reflow processing without risking damage to the boundary integrity between the housing and the support surface that supports both the electronic device and the housing.
    Type: Grant
    Filed: May 22, 1989
    Date of Patent: September 28, 1993
    Assignee: Motorola, Inc.
    Inventors: Robert R. Kornowski, Carl Missele
  • Patent number: 5246573
    Abstract: Apparatus for protecting from water damage the electric motor which drives the cog rake bar screen of a waste water treatment plant. A shell of air impermeable material surrounds the motor and has an opening at the shell bottom to drain water. Various arrangements and devices prevent water or debris from entering the opening.
    Type: Grant
    Filed: June 28, 1991
    Date of Patent: September 21, 1993
    Assignee: FMC Corporation
    Inventors: John C. Lodholz, Allen N. Bolte
  • Patent number: 5081327
    Abstract: A sealable hermetic microchip package includes a vent therein that permits gas to escape during the sealing operation, but then itself is sealed at the completion of the sealing operation to render the package hermetic. The venting of gas from the interior of the package avoids the buildup of internal pressure during the sealing operation that can introduce bubbles and other faults into the sealing material. The vent may be a channel in the sealing surface of the lid of the package that is initially open, and then fills with the seal material as it flows to effect the seal. The vent may also be a hole in the lid that is sealed by the flow of a bead of the seal material. An equivalent approach to venting provided that the lid be mounted on standoffs that flow during sealing to permit the lid to settle onto the base of the package.
    Type: Grant
    Filed: March 28, 1990
    Date of Patent: January 14, 1992
    Assignee: Cabot Corporation
    Inventors: Dana R. Graham, Kenneth L. Jones, II
  • Patent number: 5079387
    Abstract: A relay is enclosed between a cup-shaped cover and a plate. The cover includes a bottom and side walls. The interior circumference of the distal end of the side walls is notched a rim. A first flange is formed on the plate a distance from the edge of the plate that is smaller than the thickness of the rim. The height of the first flange is less than the length of the rim. A second flange extends from the first flange generally perpendicularly to the plate, sloping away from the outer circumference of the plate. As the cover is moved toward the plate, the second flange engages the inner surface of the wall and forces it outwards moving the rim toward the first flange. When the rim and first flange meet, ultrasound is applied. The rim and first flange melt at their point of contact and air is compressed in a pocket formed by the wall, rim, and second flange as the rim moves toward the plate, forcing the flash from the enclosure. Any flash which is not forced from the enclosure is trapped in the pocket.
    Type: Grant
    Filed: January 31, 1990
    Date of Patent: January 7, 1992
    Assignee: Emerson Electric Co.
    Inventors: Robert F. Weaver, Benjamin F. Chestnut
  • Patent number: 4772759
    Abstract: A ventilated, splash-resistant electrical component housing assembly adapted to allow free flow of air throughout the housing assembly in order to provide cooling of electrical components therein. A main housing body (2) having a plurality of openings (12) along with means to retain electrical components (4) with the main body is disclosed. A top cover (30) having exterior notches (42) and an interior wall (46) with interior notches (48) is attached to the main body (2) and a bottom cover (14) having vent channels (19) is secured to the main body (2) in order to shield the electrical components and simultaneously to allow the free flow of air throughout the housing assembly.
    Type: Grant
    Filed: September 23, 1987
    Date of Patent: September 20, 1988
    Assignee: United Technologies Automotive, Inc.
    Inventors: Dhirendra C. Roy, Paul J. Brzyski, John A. Salerno
  • Patent number: 4683734
    Abstract: A locked cover for surrounding an air condition responsive controller such as a thermostat to prevent the setting from being altered by people unauthorized to do so. This is accomplished by baffles which are opposite the openings in the cover to prevent tools from being inserted through these openings to adjust the control. The baffles have openings through them to permit air to flow to the controller. In one form, the baffles are rigidly secured in position in an otherwise existing type of guard cover. In another form of the invention, there are a plurality of interlocking pieces which can be fitted together and placed within an existing cover to prevent access to the adjustment for the controller. In still another version, the guard cover is modified so that the openings for admission of air are not adjacent the controller, but are spaced outwardly therefrom with the openings through the baffles adjacent the controller.
    Type: Grant
    Filed: June 19, 1986
    Date of Patent: August 4, 1987
    Inventor: Carroll T. Peterson
  • Patent number: 4559969
    Abstract: A safety device for venting excess pressure in a wet capacitor container (1) includes a lift valve (4) disposed in the wall or lid of the container, the body of the valve (4) being disposed with the aid of at least one resilient member (6) for being pressed against the valve seat (7) against the action of the pressure prevailing in the container (1), the member (6) being implemented as a resilient tongue (6) on a washer-like spring (8), where the tongue has been bent over in a direction towards the valve body (5). The spring (8) is also provided with a plurality of tongues (9) bent over in a direction away from the valve body (5) for retaining the spring (8) in the container.
    Type: Grant
    Filed: September 21, 1984
    Date of Patent: December 24, 1985
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventor: Lennart E. Ulming
  • Patent number: 4418325
    Abstract: A support structure for transmitting large forces between a superconducting magnet winding which is cooled to a very low temperature and an abutment which is at a higher temperature level and takes up the forces, especially in an energy storage device, contains support elements which point, at least approximately, in the direction of force transmission and between which stiffening elements are attached, and at least one sheet-like heat shield. This support structure has high buckling stiffness and nevertheless results in low losses due to heat transfer by making all support elements and all stiffening elements of the support structure of a really extended design formed in a honeycomb-like structure and using at least one plane of stiffening elements to form the heat shield which is kept at a predetermined intermediate temperature by means of a coolant conducted through cooling canals.
    Type: Grant
    Filed: July 10, 1981
    Date of Patent: November 29, 1983
    Assignee: Siemens Aktiengesellschaft
    Inventor: Werner Elsel
  • Patent number: 4350856
    Abstract: A relay for a printed circuit board, which can be dip-washed, comprising a relay cover which is mounted and sealed to a relay body, said relay cover being provided with a thin-walled portion which can be easily broken after dip-washing to define an opening in the cover.
    Type: Grant
    Filed: October 10, 1980
    Date of Patent: September 21, 1982
    Assignee: Fujitsu Limited
    Inventors: Takahisa Shiratori, Masaru Tamura, Kouji Hanada
  • Patent number: 4262272
    Abstract: An ignition coil, for a spark ignition system, comprising a hollow casing closed at one end by a base and closed at its opposite end by an electrically insulating cap carrying at least the high voltage output terminal of the coil. Primary and secondary windings are housed within the casing, and an annular resilient sealing gasket is trapped between mutually presented faces of the casing and the cap to seal the interface of the casing and the cap. Adjacent said gasket the casing has at least one localized region so shaped as to provide a weak point in the seal effected by the gasket between the casing and the cap, whereby when the pressure within the casing exceeds a predetermined value the sealing action at said weak point fails so relieving the excess pressure in the casing.
    Type: Grant
    Filed: April 25, 1980
    Date of Patent: April 14, 1981
    Assignee: Lucas Industries Limited
    Inventor: Bernard A. Potter
  • Patent number: 4235347
    Abstract: An air-tight molded resin enclosure for containing a fluid under pressure is disclosed. The enclosure includes a safety membrane which can rupture at a fluid pressure less than the pressure at which the enclosure will rupture. The enclosure may contain an electric device such as a circuit breaker and a pressurized insulating fluid such as sulfur-hexafluoride (SF.sub.6) gas. When an electric arc occurs in the circuit breaker, the pressure of the gas contained in the enclosure increases in magnitude. When a sizable over-pressure exists inside the air-tight enclosure, the safety membrane will rupture without damage to the circuit breaker or to any neighboring equipment. The safety membrane includes grooves which act as rupturing primers. The thickness of the safety membrane and the depth of the grooves determine the pressure at which the safety membrane will rupture.
    Type: Grant
    Filed: April 5, 1979
    Date of Patent: November 25, 1980
    Assignee: CEM Compagnie Electro-Mecanique
    Inventors: Rene Cothier, Sylvain Cagnioux
  • Patent number: 4142179
    Abstract: A warning lamp for use in hazardous atmospheres including three air-filled volumes interconnected by a passageway between screw threads whereby, in the event of an explosion, each of the volumes stores a quantity of explosive gases prior to permitting escape thereof along the passageway between the screw threads thereby providing a warning lamp which causes hot gases to be cooled sufficiently and quenched in the three volumes therein.
    Type: Grant
    Filed: June 10, 1976
    Date of Patent: February 27, 1979
    Inventor: Roy B. W. Lowndes
  • Patent number: 4062469
    Abstract: An electronic instrument case formed of breakable plastic and having a section of reduced thickness which is firmly secured to the remainder of the wall of such enclosure by a retainer. Such reduced thickness section can be broken away from the remainder of the wall of the enclosure but it is held in attached relation thereto to thereby provide a "breathing" opening for such enclosure.
    Type: Grant
    Filed: December 27, 1976
    Date of Patent: December 13, 1977
    Assignee: American Zettler, Inc.
    Inventor: Gunter Rueb
  • Patent number: 4005341
    Abstract: A transformer is provided that utilizes a substantially fully integral, generally outwardly convex casing or tank for enclosing an electrical transformer in a dielectric environment. The casing has fully integral side and top and bottom end walls, and has an open portion in its top end wall of sufficient size to serve both as a positive low to high pressure release and a maintenance hand hole. An easily inserted and removed cover assembly employs an operating stem, a domed cover member, a clamping member, a nut carrying bracket member and a spring that may be adjusted to a desired pressure relief setting by rotating the stem in one direction. Rotation of the stem in an opposite direction releases its clamping setting and loosens the parts of the cover assembly in such a manner as to permit it to be easily and quickly removed from the open portion by tilting it with respect to and out of the open portion.
    Type: Grant
    Filed: December 17, 1975
    Date of Patent: January 25, 1977
    Assignee: R. E. Uptegraff Manufacturing Company
    Inventors: Roy E. Uptegraff, Jr., Charles C. Dixon, Ravindra N. Rahangdale
  • Patent number: 3988645
    Abstract: The invention is directed to a laminar insulating material for electrical apparatus insulated by a fluid such as an insulating gas or an insulating liquid. The laminar insulating material includes two cover layers which are made of a material of relatively high density and an insulating material of relatively low density which is permeable for the fluid and fills the space between the cover layers.The invention is particularly well suited for the manufacture of the housings of overvoltage arresters which are arranged in the metal encapsulation of a gas-insulated, high-voltage installation. The laminar insulating material accomplishes here a faultless separation between the insulating gas in the metal encapsulation and that in the overvoltage arrester. Gases which penetrate the cover layers can be led off to the outside from the gas-permeable insulating material.
    Type: Grant
    Filed: August 14, 1975
    Date of Patent: October 26, 1976
    Assignee: Siemens Aktiengesellschaft
    Inventors: Gunther Luxa, Johannes Kirch
  • Patent number: 3973477
    Abstract: To protect electronic components located within a housing structure, or casing, which contains ventilation openings, against corrosion due to intrusion of water, for example being sprayed thereon upon cleaning of the area on which the structure is mounted, the housing is formed with an attachment surface having ventilation ducts formed therein which are generally Y-shaped having two branch ducts terminating at the outside of the housing in spaced position, and forming an angle with respect to each other, for example terminating at essentially right angled housing edges, and a third trunk duct connected to the interior of the housing, and branching off from the two branch ducts, so that water sprayed against the housing may run through the branch ducts, without impingement on a back wall, and ventilation is provided by additional movement of air through the trunk of the Y-shaped duct; the ducts are preferably mounted with respect to the housing in such a manner that any liquid which might accumulate within the
    Type: Grant
    Filed: June 13, 1975
    Date of Patent: August 10, 1976
    Assignee: Robert Bosch G.m.b.H.
    Inventors: Gert Jakob, Willi Gansert