Patents Represented by Attorney Harvey A. David
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Patent number: 4373521Abstract: A sheath device for heating breathing bags and hoses of underwater breath apparatus employs a fabric enclosure for the breathing bags, walls of which enclosure are formed of two layers sealed together at a plurality of discrete points to define water passages within sealed boundary lines. Tubular water conducting enclosures for the breathing hoses are connected to the enclosures in communication with the water passages in the walls, and flexible tubular dams connected to the device and to the hoses direct water flow from the wall passages into the hose enclosures.Type: GrantFiled: August 24, 1981Date of Patent: February 15, 1983Assignee: The United States of America as represented by the Secretary of the NavyInventor: J. Frank Wattenbarger
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Patent number: 4365351Abstract: A diving suit is provided with neck and wrist opening seals each in the f of a right cylindrical annulus of open celled resilient foam rubber having a through passage a portion of which is cylindrical and a portion of which is frustoconical so that part of the annulus wall is of uniform thickness and part is tapered. The tapered portion overlies a conical, opening defining edge portion of the suit fabric and a band of non-stretch tape fixes the tapered edge portion of the annulus to the fabric while allowing the thicker wall portion to expand and contract as a head or hand is pushed through. The outer cylindrical surface beyond the tape is adapted to cooperate with a mask hood or glove cuff.Type: GrantFiled: April 10, 1981Date of Patent: December 28, 1982Assignee: The United States of America as represented by the Secretary of the NavyInventors: David C. Doerschuk, James F. Mank
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Patent number: 4350662Abstract: A carbon dioxide scrubber device for use in a closed or semi-closed breatg gas circuit in an underwater breathing apparatus having a low rate of gas flow includes a canister having a plurality of spaced, coaxial walls that are heated by associated helical water flow heat exchangers and define axial gas flow chambers in which particulate carbon dioxide absorbent material is confined in contact with the heated walls. The heat exchangers are served by common supply and drain lines through water flow controlling connectors having flow dividing and uniting orifices.Type: GrantFiled: January 22, 1981Date of Patent: September 21, 1982Assignee: The United States of America as represented by the Secretary of the NavyInventors: Ronald W. Dowgul, Glendle W. Noble
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Patent number: 4349897Abstract: A bistatic, Doppler sonar that having a plurality of receiver channels det intrusion in an insonified water zone processes return signals in a plurality of discrete up Doppler and down Doppler frequencies to effect short and long term averaging of return energy and short and long term averaging of return energy slope prior to sampling and comparison to generate a multiple bit binary word that is periodically updated and read out in parallel form to detection logic. The detection logic utilizes parallel sets of shift register memories and comparators to detect when rates of occurrence of energy, slope, and stroke conditions exceed predetermined rates, and utilizes a plurality of levels of coincidence gates to detect predetermined combinations of such conditions that will produce an alarm initiating signal.Type: GrantFiled: April 24, 1981Date of Patent: September 14, 1982Assignee: The United States of America as represented by the Secretary of the NavyInventors: Hollis Boehme, Garland R. Barnard, Larry L. Mellenbruch, Danny W. Dickens
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Patent number: 4336443Abstract: A modular oven device for baking rewound and varnished electrical components of substantial size includes front and rear oven sections, sized to pass individually through a passageway too narrow to accommodate the component to be baked, and assembled on a base section to define an oven cavity, and a heater/blower section assembled on one oven section. The oven sections are characterized by double, unsulated walls, flanges covering joints, a thermostatic control, and inlet and exhaust air flow regulation.Type: GrantFiled: January 22, 1981Date of Patent: June 22, 1982Inventor: Joseph M. Benedetto
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Patent number: 4331096Abstract: A retractable pad-eye device for use in association with a plate-like wall aving an opening includes a closure member for the opening and a pad-eye member, each connected by a jack-screw to a pivot-block that is rotatable mounted relative to the wall. By operation of the jack-screws with a wrench and rotation of the pivot-block, the closure member and the pad-eye member can be alternatively shifted between retracted or storage positions and operative positions in the opening.Type: GrantFiled: November 18, 1980Date of Patent: May 25, 1982Assignee: The United States of America as represented by the Secretary of the NavyInventor: Richard E. Lovejoy
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Patent number: 4330812Abstract: Cooling of electronic components on a circuit board is accomplished by a rmally conductive element such as a heat pipe that is in spaced parallel relation to the board and in contact with the upper surfaces of the components. The ends of the conductive element are forced into contact with a heat receiving and dissipating frame by a clamp device acting through the board and a lightweight spacer between the board and the conductive element.Type: GrantFiled: August 4, 1980Date of Patent: May 18, 1982Assignee: The United States of America as represented by the Secretary of the NavyInventor: Kenneth H. Token
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Patent number: 4326374Abstract: A diffuser and baffle device prevents sea water intrusion or ingestion into marine gas turbine engine exhaust system without significantly increasing exhaust back pressure. Inboard and outboard rows of vertical turning vanes are separated by a gap and effect successive bends of the exhaust flow in opposite directions while affording an increase in cross-sectional area. The outboard vanes are slotted at their inboard edge portions, and the inboard vanes are provided with hook-shaped projections defining grooves, whereby water driven into the device is arrested and drained overboard.Type: GrantFiled: March 18, 1980Date of Patent: April 27, 1982Assignee: The United States of America as represented by the Secretary of the NavyInventor: Herbert R. Streb
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Patent number: 4317000Abstract: A torque balanced cable for towing or suspending oceanographic instrumenton includes a data transmission core about which is wound a helically laid inner layer of load bearing strands formed of high tensile strength, low stretch aramid fiber and having a selected pitch angle, pitch diameter and strand thickness. An outer composite layer is contrahelically wound about the inner layer and an interposed, abrasion resisting barrier film layer, and includes alternating load bearing strands and non-load bearing filler strands, the other load bearing strands having the same degree of pitch angle and thickness as the inner strands and of a number that bears substantially the same ratio to the number of inner strands as the pitch diameter of the inner layer bears to the pitch diameter of the outer layer.Type: GrantFiled: July 23, 1980Date of Patent: February 23, 1982Assignee: The United States of America as represented by the Secretary of the NavyInventor: Kenneth M. Ferer
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Patent number: 4301761Abstract: In an unmanned underwater instrumentation vehicle, travel to an assigned th and cyclical excursions between depth tolerances above and below that depth are effected by a mechanism that alternatively drops vernier weights by firing explosive release bolts and floods buoyancy chambers by firing explosive piercing cartridges.Type: GrantFiled: May 22, 1980Date of Patent: November 24, 1981Assignee: The United States of America as represented by the Secretary of the NavyInventors: Harold E. Fry, Arnold L. Peters
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Patent number: 4295212Abstract: A linear acoustic array for use in oceanographic work in either a towed or a vertically suspended configuration utilizes a flexible cable in which strands are woven or braided into a tube, the strands of which can be separated sufficiently to insert a hydrophone and multiplexer assembly at each of a plurality of specified locations therealong. Each hydrophone and multiplexer assembly is adapted to be readily connected into or removed from a two wire system.Type: GrantFiled: January 28, 1980Date of Patent: October 13, 1981Assignee: The United States of America as represented by the Secretary of the NavyInventor: Richard C. Swenson
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Patent number: 4255866Abstract: A compass device for underwater use and having substantially no magnetic nature or influence utilizes three Hall effect generators in an array wherein two of the generators have their principal axes of magnetic response extending normal to one another and at 45.degree. to the axis of the third generator. The array is rotatable relative to a base carrying three lights and solid state analog logic circuitry for causing the lights to be variously lighted and extinguished to indicate a need to turn left, to turn right, or being on course.Type: GrantFiled: October 30, 1979Date of Patent: March 17, 1981Assignee: The United States of America as represented by the Secretary of the NavyInventor: James T. Sears
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Patent number: 4251893Abstract: An inflatable boat having tubular side and bow forming sponsons spanned by hull bottom or floor structure including an upper inflatable floor superimposed on a lower inflatable floor, in combination with a rigid sectional keelson that is removably secured at a plurality of locations to each of the floors. Top and bottom walls of the inflatable floors are interconnected by drop stitches to limit distension to a uniform spacing when inflated.Type: GrantFiled: August 10, 1979Date of Patent: February 24, 1981Assignee: The United States of America as represented by the Secretary of the NavyInventors: William W. McCrory, Joseph D. Ramirez, David R. Bon, Bruce Dzadek, William B. Quigley
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Patent number: 4251794Abstract: A flexible cable type of linear thermal array is constructed of a bundle of nsulated conductor pairs enclosed in a braided aramid fiber strength layer through which individual pairs are withdrawn at intended thermistor stations and the end portions thereof loosely caged in the lumens of thermoplastic tubes. After an outer layer of thermoplastic fiber is braided over the bundle and tubes openings are formed through the outer layer and tubes, the wire end portions withdrawn, thermistors connected thereto and reinserted in the tube lumens.Type: GrantFiled: December 10, 1979Date of Patent: February 17, 1981Assignee: The United States of America as represented by the Secretary of the NavyInventor: Richard C. Swenson
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Patent number: 4246671Abstract: A buoy anchoring system includes an anchor device in the form of a weighted annister that pays out line from the center of a fixed, hollow-cored bale during free fall. The line is secured against further pay out after the device impacts the bottom by wrapping about a shaft that is driven upwardly within the bale by the impact. The shaft has a line engaging cross-bar at its upper end, and is held in an extended position prior to impact by a shear pin.Type: GrantFiled: November 21, 1979Date of Patent: January 27, 1981Assignee: The United States of America as represented by the Secretary of the NavyInventor: Richard C. Swenson
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Patent number: 4244455Abstract: A rotary power transmitting shaft decoupling device has a driving component xially aligned with a driven component and keyed thereto by a plurality of force transmitting elements held in operable relation to the driving and driven components, respectively, by an axially shiftable slide element that is coaxial with the driving and driven components and is provided with a lead screw. Actuation to effect decoupling is effected by engaging the lead screw with a plunger so that rotation of the device results in axial shifting of the slide element and withdrawal of the force transmitting elements from operable relation to the driving and driven components.Type: GrantFiled: October 17, 1978Date of Patent: January 13, 1981Assignee: The United States of America as represented by the Secretary of the NavyInventor: W. Aleck Loker
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Patent number: 4244456Abstract: A rotary power transmitting shaft decoupling device has a driving element sposed coaxially within a driven element and keyed thereto by a plurality of rollers held in aligned grooves and slots of the driving and driven elements, respectively, by an indexing ring that is coaxial with and surrounds the driven element. Actuation to effect decoupling is effected by arresting rotation of the indexing ring until the rollers become aligned with slots in the ring through which the rollers are ejected.Type: GrantFiled: September 21, 1978Date of Patent: January 13, 1981Assignee: The United States of America as represented by the Secretary of the NavyInventor: W. Aleck Loker
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Patent number: 4241898Abstract: A purge valve for full face masks or helmets includes a base member fixed the mask wall and having passages opening in a flat, annular valve seat surface. A manually operable valve member includes an outer cylindrical wall, an inner cylindrical wall reentrant from an end wall and is axially slidable on a stem extending from the base member against the action of a compression spring nested between the cylindrical walls.Type: GrantFiled: January 8, 1979Date of Patent: December 30, 1980Assignee: The United States of America as represented by the Secretary of the NavyInventor: Steven F. Segrest
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Patent number: 4241427Abstract: A condition responsive line array cable having pairs of conductor contain, hollow braided strands plaited into a hollow braid in which transducer mounts are enmeshed and gripped. The mounts comprise a rigid plastic tubular housing in which a rubber jacketed transducer is resiliently suspended by elastomeric projections. Resiliently flexible, hollow, tapered, rubber fairings extend from each end of the housing and are slit to admit wires pulled from a cable strand. The fairings are long relative to the housing diameter and are retained assembled with the housing by cooperating ribs and grooves.Type: GrantFiled: October 27, 1978Date of Patent: December 23, 1980Assignee: The United States of America as represented by the Secretary of the NavyInventor: Richard C. Swenson
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Patent number: 4233558Abstract: A dual section power supply, one section for supplying high voltage dc po and the other section for supplying low voltage dc power, are each connected to a common ac source. The high voltage section employs a phase-controlled rectifier, the control circuit for which employs logic signal development using timer techniques dependent on the amplitude of voltage deviation from the intended regulated output level. Each of two low voltage sections employs a power switch controlled by sampling and pulse steering techniques to effect fixed high frequency, variable duty cycle switching. An inhibit input is supplied from each of the low voltage sections to the high voltage section to prevent a high voltage output to the load in the absence of low voltage development.Type: GrantFiled: September 22, 1978Date of Patent: November 11, 1980Assignee: The United States of America as represented by the Secretary of the NavyInventor: Robert F. Gaertner