Patents Assigned to Raychem Corporation
  • Patent number: 5480310
    Abstract: A telecommunications connector (10) includes a ground clip (15) which resiliently engages the rim (17a) of a grounding bus rail (12). Opposing fingers (25, 26) grip the rim (17a). A pivot finger (26) first grips the rim (17a), and then the connector (10) is rotated (28) onto the rim. Tangs (45) also engage the rim (17a), and the connector (10) and clip (15) are locked in position on the rail (12) by jaws (47). Entry wings (30, 41) assist in opening the fingers (25, 26) and a ground lead receiving pocket (35) on the dip (15).
    Type: Grant
    Filed: October 28, 1993
    Date of Patent: January 2, 1996
    Assignee: Raychem Corporation
    Inventor: Thomas M. Baum
  • Patent number: 5479553
    Abstract: A splice closure including a frame having a partition wall to define front and rear access areas for the closure. The frame carries one or more splice trays on a first surface portion making the splices accessible from the front or first access area. A slack storage compartment is provided on the second surface portion. The slack storage compartment includes one or more pairs of opposing sidewalls that define an access opening for the slack that is accessible from the rear access area. An extension member for the frame is disclosed for obtaining greater amounts of slack from the cable, such as for a taut sheath cable splice. A tandem longitudinal arrangement of splice trays is also disclosed and may be used for a taut sheath ring splice or for repairing a severed cable.
    Type: Grant
    Filed: April 19, 1993
    Date of Patent: December 26, 1995
    Assignee: Raychem Corporation
    Inventors: Daniel F. Daems, John R. Holman, Carney P. Claunch, II, Edward J. Wilcox
  • Patent number: 5475779
    Abstract: An optical fiber transmission network for transmitting voice, data, or video signals between telecommunication units includes optical couplers which bend an optical fiber at a location in close proximity to the fiber end so as to allow coupling with the fiber through its side rather than through the end of the fiber. This eliminates the need for cleaving and polishing the fiber end, and results in a craft friendly way of terminating an optical fiber end with a telecommunication unit.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: December 12, 1995
    Assignee: Raychem Corporation
    Inventors: William D. Uken, Akira Tomita
  • Patent number: 5473613
    Abstract: A method and apparatus for transmitting and receiving multiple telephone transmission signals over a single twisted pair. An analog signal from a local switching station is converted to an 80 kbits/sec signal for transmission over a twisted pair. A remote terminal converts the 80 kbits/sec signal back into a conventional analog signal for use in conventional telephone, facsimile or other related equipment.
    Type: Grant
    Filed: January 27, 1995
    Date of Patent: December 5, 1995
    Assignee: Raychem Corporation
    Inventor: David C. Bliven
  • Patent number: 5470622
    Abstract: A substrate (12,14) is enclosed with a heat recoverable backing with a layer of a thermosetting adhesive composition (20) comprising an amorphous thermoplastic resin and a thermosetting resin positioned between the heat recoverable article (10, 26) and the substrate (12,14). The adhesive composition can be in the form of a self supporting sheet or tape or it can be on a surface of the heat recoverable article (10). In some embodiments, a polymeric insert (32) is also used to ensure adequate sealing between the substrate and the thermosetting adhesive.
    Type: Grant
    Filed: September 19, 1994
    Date of Patent: November 28, 1995
    Assignee: Raychem Corporation
    Inventors: James A. Rinde, Richard M. Rowe
  • Patent number: 5469613
    Abstract: A system is provided for firmly attaching a coaxial cable terminus to a standard connection jack in such a way that the connection point is effectively shielded from tampering by individuals and is effectively sealed from degrading elements in the atmosphere. The system includes a jack attachment member having a collet structure, a swagging shell which slips over the collet structure to accomplish a firm connection with the jack and a locking shroud which surrounds the swagging cylinder so as to make it difficult to de-attach and/or re-attach the cable terminus to the jack without special tooling. Such special tooling, however, is simple and inexpensive for authorized service technicians, thereby making the system at once relatively secure from tampering and atmospheric degradation and simple and inexpensive to install and maintain. Furthermore, the system can be retrofitted into existing coaxial cable equipment, using standard coaxial cable connection jacks.
    Type: Grant
    Filed: March 29, 1994
    Date of Patent: November 28, 1995
    Assignee: Raychem Corporation
    Inventors: Corey McMills, John Mattis
  • Patent number: 5468782
    Abstract: Novel compositions containing an ECTFE polymer and PTFE particles dispersed therein, and insulated wires and cables, especially local area network (LAN) cables in which the conductors are covered by foamed insulation made from such compositions.
    Type: Grant
    Filed: February 18, 1995
    Date of Patent: November 21, 1995
    Assignee: Raychem Corporation
    Inventor: Ashok Mehan
  • Patent number: 5463482
    Abstract: A chiral nematic liquid crystal-polymer composite capable of having a paper-white off-state and a highly transparent on-state. The composite includes droplets of at least two different liquid crystal materials. The different liquid crystal materials are isolated from each other and have different reflection bands. The composite is suitable for use in light valves generally and direct view and projection displays particularly.
    Type: Grant
    Filed: October 18, 1993
    Date of Patent: October 31, 1995
    Assignee: Raychem Corporation
    Inventor: Philip J. Jones
  • Patent number: 5461015
    Abstract: A porcelain having 9 to 55% by weight of SiO.sub.2, 36 to 87% by weight of Al.sub.2 O.sub.3, 0 to 2.0% by weight of Fe.sub.2 O.sub.3, 0 to 1.0% by weight of TiO.sub.2, 0 to 0.5% by weight of CaO, 0 to 0.5% by weight of MgO, 1.0 to 4.0% by weight of K.sub.2 O and Na.sub.2 O combined, and 0.25 to 25.0% by weight of bismuth oxide is disclosed. The porcelain has unexpectedly high unglazed bending strength and may be used for dielectric and structural applications.
    Type: Grant
    Filed: August 29, 1994
    Date of Patent: October 24, 1995
    Assignee: Raychem Corporation
    Inventors: Karin M. Kinsman, Ryan W. Dupon, Martha L. McCrum, Linas Mazeika, Amy S. Chu
  • Patent number: 5459729
    Abstract: A method and apparatus for transmitting and receiving multiple telephone transmission signals over a single twisted pair. An analog signal from a local switching station is converted to an 80 kbits/sec signal for transmission over a twisted pair. A remote terminal converts the 80 kbits/sec signal back into a conventional analog signal for use in conventional telephone, facsimile or other related equipment.
    Type: Grant
    Filed: July 25, 1989
    Date of Patent: October 17, 1995
    Assignee: Raychem Corporation
    Inventor: David C. Bliven
  • Patent number: 5459730
    Abstract: A method and apparatus for transmitting and receiving multiple telephone transmission signals over a single twisted pair. An analog signal from a local switching station is converted to an 80 kbits/sec signal for transmission over a twisted pair. A remote terminal converts the 80 kbits/sec signal back into a conventional analog signal for use in conventional telephone, facsimile or other related equipment.
    Type: Grant
    Filed: January 27, 1995
    Date of Patent: October 17, 1995
    Assignee: Raychem Corporation
    Inventor: David C. Bliven
  • Patent number: 5456959
    Abstract: A tooless environmental splice enclosure capable of fitting within an aerial splice case is disclosed. The environmental closure permits sealing and reentry to a cable splice region.
    Type: Grant
    Filed: November 2, 1993
    Date of Patent: October 10, 1995
    Assignee: Raychem Corporation
    Inventor: Keith Dawes
  • Patent number: 5451919
    Abstract: A conductive polymer composition which has a resistivity of less than 10 ohm-cm and which exhibits PTC behavior comprises a polymeric component and a particulate conductive filler. The polymeric component comprises a first crystalline fluorinated polymer having a first melting point T.sub.m1 and a second crystalline fluorinated polymer having a second melting point T.sub.m2 which is from (T.sub.m1 +25).degree. C. to (T.sub.m1 +100).degree. C. The composition exhibits one of a number of characteristics, including a relatively high PTC anomaly. The composition is useful in circuit protection devices to be used at high ambient conditions.
    Type: Grant
    Filed: June 29, 1993
    Date of Patent: September 19, 1995
    Assignee: Raychem Corporation
    Inventors: Edward F. Chu, Ann Banich, Robert Ives, Steven Sunshine, Chi-Ming Chan
  • Patent number: 5451921
    Abstract: An electrical assembly in which electrical connection is made to a device having two laminar electrodes and a laminar element between the electrodes, preferably a circuit protection device in which a PTC conductive polymer element is sandwiched between two metal foil electrodes. Connection is made to at least one of the electrodes by a resiliently deformed clip having an active arm which contacts one of the electrodes, and a passive arm which is not in conductive contact with the other electrode. Preferably there is an auxiliary member between the active and passive arms of the clip. The auxiliary member can be an insulator, or a conductive member which is spaced apart from the other electrode but secured to the same face of the PTC element as the other electrode.
    Type: Grant
    Filed: October 4, 1993
    Date of Patent: September 19, 1995
    Assignee: Raychem Corporation
    Inventors: Tracy Crawford, Jim D. Beckham, Andrew D. White
  • Patent number: 5449299
    Abstract: A modular, re-enterable telecommunications terminal (50), for making and breaking connections with insulated wire conductors, includes one or more base frames (52) supporting wire termination modules (55, 56) thereon, and a multi-pin socket (60) thereon is connected to another base froze (52) by one or more bridging modules (100). The termination modules (55, 56) are manually operable for terminating wires in insulation displacing connectors (70, 85), and are selected and positioned according to the type of terminations desired. Manually pushing and pulling the termination module drivers (65, 80) toward and away from the base frames (52) effects movement of the wires between connected and open positions.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: September 12, 1995
    Assignee: Raychem Corporation
    Inventors: Gerald L. Shimirak, Gail J. Bingham, Miguel A. Morales, Ruben P. Ramirez
  • Patent number: 5446823
    Abstract: A universal end seal for a butt splice or in-line optical fiber closure is described. The seal includes a keyed tubular member to permit initial assembly but re-entry and use without dis-assembling the complete end seal. A hanger for an in-line closure is also described.
    Type: Grant
    Filed: January 26, 1994
    Date of Patent: August 29, 1995
    Assignee: Raychem Corporation
    Inventors: Gail J. Bingham, Jeff Haller, Mathew Steinberg
  • Patent number: 5441560
    Abstract: Flame retarded organopolysiloxane gels suitable for sealing and protecting electrical contacts include (i) an organopolysiloxane gel having repeat units of the structure ##STR1## where each R is independently phenyl or C.sub.1 -C.sub.4 alkyl or fluoroalkyl, at least 40% of the R groups being phenyl; and (ii) an additive package mixed with the organopolysiloxane, which is (a) zinc oxide; (b) antimony oxide; (c) a brominated compound having a molecular weight of at least 450 and a bromine content of at least 40 weight %; (d) a chlorinated compound having a molecular weight of at least 300 and a chlorine content of at least 40 weight %; or (e) combinations of the above. The additive package is used in an amount between about 10 and about 60 parts by weight per 100 parts by weight of organopolysiloxane.
    Type: Grant
    Filed: December 1, 1993
    Date of Patent: August 15, 1995
    Assignee: Raychem Corporation
    Inventors: Achilles Chiotis, Rejendra S. Cornelius, Pravin L. Soni
  • Patent number: 5440665
    Abstract: A fiber optic cable system, such as a preterminated fiber cable, includes a main cable and one or more drop cables connected to the main cable at spaced apart locations along the main cable. The drop cable is spliced to the main cable using a splice closure including a fiber guide that secures spliced together end portions of the respective fibers in a longitudinally extending direction and devoid of any slack coils of optical fibers. Accordingly, the overall diameter of the splice closure is relatively small thereby permitting the cable system to be stored on a reel and to be readily placed within small diameter conduits. The splice closure includes a heat recoverable housing surrounding the fiber guide. Cable sheath end portions are sealed by melting C-shaped bodies of heat flowable material positioned adjacent cable sheath end portions.
    Type: Grant
    Filed: April 16, 1993
    Date of Patent: August 8, 1995
    Assignee: Raychem Corporation
    Inventors: Craig D. Ray, Carney P. Claunch, II, Terrance D. Hunsinger, Julian S. Mullaney, Michael L. Randolph, Robert G. Sember, James R. Shaw, Amanda C. Smith, Stephen E. Wald
  • Patent number: 5435736
    Abstract: A terminator cap and system for using the terminator cap is provided for protecting a standard coaxial cable port from atmospheric conditions and from unwarranted tampering. The cap is a hollow cylinder with one enclosed end. The terminator cap is dimensioned to slip over one end of a connection jack connector, the other end of which has a plurality of attachment fingers dimensioned to fit over the connection jack. The swagging shell is used to firmly hold the terminator cap to the connection jack connector and firmly hold the flared fingers of the connection jack connector to the connection jack. A locking shroud is attached to the connection jack such that the locking shroud surrounds the connection jack, the connection jack connector, the terminator cap and the swagging shell.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: July 25, 1995
    Assignee: Raychem Corporation
    Inventors: Corey McMills, John Mattis
  • Patent number: 5436609
    Abstract: An electrical device in which a conductive terminal is physically and electrically attached directly or indirectly to a face of a laminar PTC resistive element. The terminal comprises a laminar portion and a non-laminar shaped portion which lies within a projection of the periphery of the PTC resistive element. The shaped portion serves to improve thermal transfer between the PTC element and the atmosphere surrounding the device. Devices of the invention are useful as circuit protection devices.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: July 25, 1995
    Assignee: Raychem Corporation
    Inventors: Chi-Ming Chan, Shou-Mean Fang