Patents Assigned to Microwave Development Laboratories
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Patent number: 5115563Abstract: A method of assembling an electrical connector that includes an outer conductor body, an inner conductor and a resilient and deformable insulating sleeve. The method includes providing a bore in the rigid outer conductor body having an inwardly directed substantially annular ridge extending therefrom defining a minimum bore diameter of the outer connector body. A bore is provided in the insulating sleeve along with a substantially annular recess in the outer surface of the sleeve. The maximum diameter of the insulating sleeve is provided greater than the minimum bore diameter of the outer conductor body when the insulating sleeve is at a rest position. The next step is inserting the insulating sleeve into the bore of the rigid outer conductor body to a position in which the rigid outer conductor body ridge is in alignment with the insulating sleeve recess.Type: GrantFiled: November 7, 1990Date of Patent: May 26, 1992Assignee: Microwave Development Laboratories, Inc.Inventor: Ronald A. Wilson
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Patent number: 4971578Abstract: An electrical connector having inner and outer conductors along with an insulating sleeve therebetween. The inner conductor has three recesses disposed therealong including a middle recess and oppositely disposed remote recesses. A pair of spaced rings are disposed respectively between the middle recess and remote recesses. The rings each are of a diameter greater than the middle recess diameter and are dimensioned so that the connector is well-matched over a broad frequency band.Type: GrantFiled: August 24, 1989Date of Patent: November 20, 1990Assignee: Microwave Development Laboratories, Inc.Inventor: Ronald A. Wilson
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Patent number: 4920643Abstract: A method of assembling an electrical connector that includes an outer conductor body, an inner conductor and a resilient and deformable insulating sleeve. The method includes providing a bore in the rigid outer conductor body having an inwardly directed substantially annular ridge extending therefrom defining a minimum bore diameter of the outer conductor body. A bore is provided in the insulating sleeve along with a substantially annular recess in the outer surface of the sleeve. The maximum diameter of the insulating sleeve is provided greater than the minimum bore diameter of the outer conductor body when the insulating sleeve is at a rest position. The next step is radially compressing the insulating sleeve to a smaller diameter than at the rest position thereof. Next is inserting the insulating sleeve, while at least partially compressed, into the bore of the rigid outer conductor body to a position in which the rigid outer conductor body ridge is in alignment with the insulating sleeve recess.Type: GrantFiled: September 26, 1988Date of Patent: May 1, 1990Assignee: Microwave Development LaboratoriesInventor: Ronald A. Wilson
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Patent number: 4907983Abstract: An electrical connector having inner and outer conductors along with a sleeve therebetween. The outer conductor has an inwardly directed annular ridge adapted to interlock with an annular recess in the sleeve. In order to maintain contact between the recess of the sleeve and the annular ridge of the outer conductor with changes in temperature, the length of the ridge is related to the diameter of the sleeve at each point along the slope of the beveled wall of the ridge by the equation L=D tan .theta.. In a second version of the invention described herein there is an assymetrical connector in which the opposed beveled end walls of the respective body and sleeve are defined by frusto-conic surfaces of cones each having a common vertex preferably disposed on the connector longitudinal axis.Type: GrantFiled: April 20, 1988Date of Patent: March 13, 1990Assignee: Microwave Development LaboratoriesInventor: Ronald A. Wilson
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Patent number: 4775325Abstract: An electrical connector having inner and outer conductors along with a sleeve. The outer conductor has an inwardly directed annular ridge adapted to interlock with the sleeve. The sleeve is preferably of teflon. In order to maintain contact between the sleeve and the annular ridge of the outer conductor with changes in temperature, the length of the ridge is related to the diameter of the sleeve at each point along the slope of the end slope of the ridge by the equation L=D tan .theta.. The angle related in the equation is the end bevel angle on the ridge and when this angle is on the order of 45.degree., then the relationship reduces to one in which the length of the ridge is comparable to the diameter of the sleeve in order to maintain contact over a temperature change range.Type: GrantFiled: May 13, 1986Date of Patent: October 4, 1988Assignee: Microwave Development LaboratoriesInventor: Ronald A. Wilson
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Patent number: 4670724Abstract: A stub-support arrangement for a coaxial transmission line wherein the line has inner and outer conductors and the stub is in the form f oppositely disposed stubs each having a length of 1/8 wavelength at the center operating frequency or less. One of the stubs is an open-circuit stub and the other is a short-circuit stub. In the case of the stubs being of 1/8 wavelength, the characteristic admittances of the stubs are equal and in the case of the stubs being less than 1/8 wavelength the characteristic admittance of the open-circuit stub becomes larger and that of the short-circuit stub becomes smaller as the physical length of the stub is reduced.Type: GrantFiled: July 22, 1985Date of Patent: June 2, 1987Assignee: Microwave Development Laboratories, Inc.Inventors: Gordon P. Riblet, Ronald A. Wilson
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Patent number: 4282649Abstract: The waveguide assembly is constructed of interlocked sections of hollow rectangular waveguide which are abutted end to end. In a preferred version the abutted ends of the sections may be interlocked by grooving or dove-tailing the sections along the broad walls of the waveguide in a manner insuring alignment of the broad walls. One of the mated sections has locating tabs extending from its narrow walls. The tabs overlap the narrow walls of the adjacent interlocked section and maintain the narrow walls in alignment by preventing slippage along the dove-tail joint. The dove-tail joint is initially constructed in an open configuration and after annealing, the joint is closed by application of pressure thereto. Either one or both broad wall joints may be closed, and when only one is closed then the opposite joint is initially constructed in a closed position.Type: GrantFiled: August 13, 1979Date of Patent: August 11, 1981Assignee: Microwave Development LaboratoriesInventor: Ronald A. Wilson
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Patent number: 4007903Abstract: A microwave circulator is die cast as a unitary casing by the apparatus of this invention. The circulator is characterized by two-fold symmetry regarding the external dimensions of the device and three-fold symmetry regarding the internal dimensions of the device in the central coupling area. The casing defining the circulator is poured in a single operation with the use of three independently employed cores which define the three ports of the circulator.Type: GrantFiled: September 18, 1975Date of Patent: February 15, 1977Assignee: Microwave Development Laboratories, Inc.Inventor: Gordon Riblet