Patents Represented by Attorney Thomas C. O'Konski
  • Patent number: 4142704
    Abstract: An integral, spring metal fastener has the form of a generally flat, interrupted or incomplete ring and a pair of opposed, spaced hooked arms mounted within the ring and curvedly extending toward, but not completely to, the ring ends defining the interruption. The ring ends are squeezable together, as with pliers, to bring the hooked arms closer together and, when released, the ring and the hooked arms resiliently return to their original, uncompressed position. The hooked arms are adapted to be engaged within a hole in a mounting post so that the fastener can secure other mounting elements to the post. The fastener is particularly adapted for securing antivibration mounting elements of the type conventionally used in mounting vibration causing devices, such as compressors, in this manner.
    Type: Grant
    Filed: January 19, 1978
    Date of Patent: March 6, 1979
    Assignee: TRW Inc.
    Inventor: Ronald A. Murray
  • Patent number: 4132145
    Abstract: A washer-nut assembly wherein a sheet metal nut is rotatably coupled within an annular plastic washer. The nut has an inner threaded barrel portion for engaging the threads of a cooperating bolt, an outer barrel portion shaped for engagement by a tightening tool and a frusto-conically shaped skirt portion extending outwardly from the outer barrel portion. The washer includes a central through-aperture and an inboard surface near one end of the washer that defines a seat for the skirt portion of the nut. The axial height of the washer is substantially greater than that of the nut so that the nut is recessed within the washer. The nut is coupled to the washer by skiving material from the inboard surface of the washer to form tongues that overhang the skirt portion of the nut. The tongues retain the nut within the washer yet permit free-spinning of the nut and washer relative to one another.
    Type: Grant
    Filed: April 11, 1977
    Date of Patent: January 2, 1979
    Assignee: TRW Inc.
    Inventor: Charles H. Becker
  • Patent number: 4121068
    Abstract: A four terminal polarity reversing electrical switch. Two of the terminals each have a pair of contact surfaces so located as to form opposed pairs of contacts, each pair including one contact from each terminal, when the terminals are positioned symmetrically with respect to each other. The other two terminals provide bearing surfaces supporting rotatable arms which extend intermediate corresponding contact surface pairs and which contact one of the other surfaces of the pairs when the arms are rotated to opposed positions.
    Type: Grant
    Filed: February 28, 1977
    Date of Patent: October 17, 1978
    Assignee: TRW Inc.
    Inventor: Vincent W. Peck
  • Patent number: 4091962
    Abstract: A panel hole closure is composed of a rigid plate having an integral array of resilient fingers projecting from one surface of the plate inboard of the plate rim. A integral stiffener is provided for each finger which stiffens the finger against inward deflection toward the axis of the plate so that once the closure is seated in a panel aperture, it is difficult to dislodge. A plastic sealing ring encircling the plate rim may be melted and flow to provide a fluid-tight seal between the closure plate and panel.
    Type: Grant
    Filed: July 20, 1977
    Date of Patent: May 30, 1978
    Assignee: TRW Inc.
    Inventor: Harold S. van Buren, Jr.
  • Patent number: 4079691
    Abstract: A tire pressure indicator includes a cylindrical housing having an axial bore communicating with the interior of a pneumatic tire either through the tire valve stem or directly through the wheel rim. A valve poppet is movable within the housing between a first position in which it seals the tire by engaging a shoulder projecting inwardly in the bore and a second position in which it is spaced from the shoulder to release air from the tire. A hollow cap threadedly connects to the housing and, when so connected, compresses a spring in the housing that biases the poppet toward its second, releasing position against the air pressure in the tire biasing the poppet toward its first, sealing position. When the pressure in the tire drops to a predetermined level, the poppet moves to its second position releasing air into the cap. An indicating element normally concealed within the cap is projected from the cap by the released air to provide a visual warning of the tire pressure drop.
    Type: Grant
    Filed: December 6, 1976
    Date of Patent: March 21, 1978
    Assignee: TRW Inc.
    Inventor: Leonard L. Curado
  • Patent number: 4037754
    Abstract: A closure plug particularly useful in the manufacture of insulated closures such as refrigerator and freezer cabinets. The plug comprises a molded, one-piece resilient plastic body member including a peripheral portion for sealingly engaging the edges of an opening in the closure, a central portion extending inwardly from the peripheral portion and defining an aperture communicating with the opening, first and second relatively flexible flaps extending above the central portion and overhanging the aperture and first and second relatively rigid tabs extending from the central portion between the flaps toward the center of the aperture. The flaps are deformable past the tabs through the aperture of permit the insertion of an insulative foam introducing conduit into the closure. Upon withdrawal of the conduit, the flaps tend to return to their original position outside the aperture but are restrained from passing back through the aperture by the tabs.
    Type: Grant
    Filed: December 6, 1976
    Date of Patent: July 26, 1977
    Assignee: TRW Inc.
    Inventors: Julius B. Wilhelmi, Roger E. Somers
  • Patent number: 4029390
    Abstract: In accordance with the disclosed invention, a first group of optical fiber waveguides is spliced to a second, similar group of optical fiber waveguides using a unique foldable holder. The holder illustratively comprises a relatively thin wafer formed of a bendable material, such as a plastic or metal, and includes first and second sections disposed about a centrally extended fold line. Each section of the holder includes a plurality of grooves laterally spaced in a parallel relation symmetrically about the fold line for receiving and aligning the individual fibers in each fiber group to be spliced. To achieve the desired splice, the fibers in a first group are placed and then fixed in the grooves of the first section of the holder, while the fibers in a second group are placed and then fixed in the grooves of the second section of the holder.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: June 14, 1977
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Edwin Leroy Chinnock, Detlef Christoph Gloge
  • Patent number: 4000936
    Abstract: Substantial reductions in the distortion loss in an optical fiber waveguide due to the influence of random external forces can be realized by encasing the fiber in a properly designed jacket. In accordance with the disclosed invention, the ability of a jacketed optical fiber structure to resist external forces is characterized by a parameter referred to as its retention length R, given by ##EQU1## WHERE H is the flexural rigidity of the jacketed fiber and D.sub.f is the lateral rigidity of the jacketed fiber. It is shown that minimum distortion loss can be achieved by designing the fiber jacket so that the retention length R of the combined fiber-jacket structure exceeds a critical coupling wavelength .LAMBDA..sub.c for the fiber. A variety of illustrative jacket designs are described.
    Type: Grant
    Filed: July 30, 1974
    Date of Patent: January 4, 1977
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: Detlef Christoph Gloge
  • Patent number: 3982123
    Abstract: There is disclosed a variety of arrangements for tapping a portion of the signal power from an optical fiber waveguide without requiring that the fiber be terminated or broken. Power is coupled out of the fiber waveguide, which typically includes an inner core surrounded by a lower refractive index outer cladding, by disposing a dielectric body in a coupling relationship with an intermediate length of the fiber from which all or most of the cladding has been removed or, alternatively, which is bent to cause a portion of the power to radiate out of the inner core into the outer cladding of the fiber. The dielectric body couples power out of the fiber provided its index of refraction is approximately equal to, or greater than, that of the fiber cladding material. The power coupled out by the dielectric body is converted to a representative electrical signal by a photodetector disposed adjacent to the dielectric body.
    Type: Grant
    Filed: November 11, 1974
    Date of Patent: September 21, 1976
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: James Emanuel Goell, Tingye Li, Willis Martin Muska
  • Patent number: 3969016
    Abstract: The disclosure is directed to optical fiber waveguiding structures, and techniques for fabricating the same, which are designed to have reduced modal dispersion as a result of the deliberate enhancement of mode coupling in the fibers. The mode coupling is achieved in each of the structures by means of an enveloping outer jacket, typically of plastic, which is selectively deformed so as to modify the straightness of the fiber axes in a spatially periodic manner. Several alternative techniques are presented for properly deforming the outer jacket either before or after it is combined with the fibers. Since, with these structures and techniques, the outer jacket provides the desired fiber perturbations, the fibers themselves can be fabricated using standard techniques without the need for any special procedures for modifying their parameters.
    Type: Grant
    Filed: May 9, 1975
    Date of Patent: July 13, 1976
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Peter Kaiser, Enrique Alfredo Jose Marcatili
  • Patent number: 3936631
    Abstract: There is disclosed an arrangement for tapping signal power from an optical fiber waveguide without requiring that the fiber be terminated or broken. An intermediate length of a fiber waveguide from which all or most of the outer cladding has been removed is sandwiched between first and second dielectric bodies, each illustratively in the form of a circular disk. The first body, which serves to couple optical power out of the fiber, is formed of a relatively compliant dielectric material, such as a soft plastic, having an index of refraction approximately equal to, or greater than, that of the outer cladding of the fiber. The second body is formed of a relatively hard dielectric material, such as a glass or hard plastic, having an index of refraction less than that of the first body. The two dielectric bodies and the fiber are placed in a specially designed holder and forced together so that the fiber deforms the first body providing a large area of contact therewith.
    Type: Grant
    Filed: November 11, 1974
    Date of Patent: February 3, 1976
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: Willis Martin Muska
  • Patent number: 3934773
    Abstract: A method of breaking a rod of brittle material, such as a glass optical fiber, so as to yield a mirrorlike surface across the entire rod end is described. This is achieved by establishing a decreasing tensile stress across the cross section of the rod which, at all points, is greater than zero but less than the threshold stress at which a mist zone forms. This is conveniently achieved by simultaneously applying longitudinal tension to the rod and bending it. A convenient hand tool for breaking optical fibers is also described.
    Type: Grant
    Filed: November 2, 1973
    Date of Patent: January 27, 1976
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Edwin Leroy Chinnock, Detlef Christoph Gloge, Peter William Smith
  • Patent number: 3931518
    Abstract: In an optical fiber power tap, signal power is coupled out of an optical fiber waveguide by a dielectric body disposed in a coupling relationship laterally offset from an intermediate length of the fiber, and is converted to a representative electrical signal suitable for utilization by a photodetector disposed adjacent to the dielectric body. In accordance with the disclosed invention, the operation of the fiber tap is improved by combining therewith means for coupling a portion of the signal power in the fiber from lower order modes to higher order modes. The mode coupling means illustratively comprises a pair of corrugated plates which is pressed against the fiber to periodically deform a region of the fiber just preceding the fiber tap.
    Type: Grant
    Filed: November 11, 1974
    Date of Patent: January 6, 1976
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: Stewart Edward Miller