Patents Assigned to Microdot Inc.
  • Patent number: 4176582
    Abstract: A torque limiting nut assembly having a threaded nut member and a spring wrench member which are interconnected by a ratchet like construction in which the magnitude of final assembly torque is predetermined by the torque required to initiate ratcheting of the ratchet like construction and with the ratchet like construction defining a non ratcheting, positive engagement construction for disassembly torque whereby the threaded nut member can be removed.
    Type: Grant
    Filed: February 10, 1978
    Date of Patent: December 4, 1979
    Assignee: Microdot Inc.
    Inventor: Erwin C. Witte
  • Patent number: 4172314
    Abstract: Disclosed is a fixed carrier type coil insert tool for installing a threaded insert into a threaded aperture of a workpiece. The insert tool is designed to provide means for externally adjusting the depth to which the coil insert is installed within the workpiece. This is accomplished by providing a carrier whose position relative to the mandrel can be adjusted so that the distance from the end of the mandrel to the workpiece is adjustable. Since the mandrel advances a fixed distance upon actuation of the power tool, the result is a change in the depth of penetration of the mandrel into the workpiece, and a corresponding adjustment in the depth to which the coil insert is installed into the aperture of the workpiece.
    Type: Grant
    Filed: June 8, 1978
    Date of Patent: October 30, 1979
    Assignee: Microdot Inc.
    Inventors: Imre Berecz, D. Richard Paul, Joseph P. Zupan
  • Patent number: 4159552
    Abstract: A barrel nut particularly adapted for high strength applications, and method of manufacture which results in a great cost reduction as compared with the prior art. The barrel nut comprises a semi-cylindrical barrel element having a recess for the nut element, the recess having side as well as end walls. The side walls are pierced and the nut element has ears extending into these openings for retention purposes. The method of manufacture comprises forming a cylindrical slug, forming the slug into the recessed barrel shape, drilling the bolt opening, piercing the side walls of the recess, placing the nut element in the recess, and crimping the side walls inwardly to retain the nut element ears.
    Type: Grant
    Filed: July 10, 1978
    Date of Patent: July 3, 1979
    Assignee: Microdot Inc.
    Inventor: Imre Berecz
  • Patent number: 4153324
    Abstract: An electrical terminal that has a mounting portion and an integral conductor clamping portion. The clamping portion includes a base and a pair of walls projecting from the base. Each wall includes two arm portions forming a V-shape. Each arm portion includes a guide surface and a termination surface. The guide surface has a sharpened edge for severing the insulation of a conductor. The guide surface is inclined from this edge in such fashion that the cut insulation is wedged outwardly away from the internal conductor. Contact between the termination surface and the wire portion of the conductor occurs along the entire width of such surface. Opposing walls of the terminal flex laterally outwardly, and the arm portions of each wall flex outwardly at an acute angle, during termination. As a result, the clamping action of the walls and arm portions generates forces having longitudinal and lateral directional components.
    Type: Grant
    Filed: March 8, 1978
    Date of Patent: May 8, 1979
    Assignee: Microdot, Inc.
    Inventor: Frank A. Kukla
  • Patent number: 4119130
    Abstract: A barrel nut particularly adapted for high strength applications, and method of manufacture which results in a great cost reduction as compared with the prior art. The barrel nut comprises a semi-cylindrical barrel element having a recess for the nut element, the recess having side as well as end walls. The side walls are pierced and the nut element has ears extending into these openings for retention purposes. The method of manufacture comprises forming a cylindrical slug, forming the slug into the recessed barrel shape, drilling the bolt opening, piercing the side walls of the recess, placing the nut element in the recess, and crimping the side walls inwardly to retain the nut element ears.
    Type: Grant
    Filed: February 25, 1977
    Date of Patent: October 10, 1978
    Assignee: Microdot Inc.
    Inventor: Imre Berecz
  • Patent number: 4108525
    Abstract: The disclosure relates to a miniature high density connector. Like connector housings, termed "hermaphroditic" in the industry in that each contains male and female pins and sockets, are constructed and mated in a manner that maximizes electrical and mechanical integrity yet minimizes size. A pair of like, elongated insulated housings of generally U-shaped transverse cross section have a plurality of aligned closely spaced bores with male electrical contacts supported therein in one leg and a plurality of closely spaced tubular female contacts in the bight portion of each housing, the housings being adapted to mate with one another so that the male and female contacts are directly supported by the bores in one leg of each housing.
    Type: Grant
    Filed: August 19, 1977
    Date of Patent: August 22, 1978
    Assignee: Microdot Inc.
    Inventor: Thomas Christopher Lincoln
  • Patent number: 4106540
    Abstract: A locking thread insert is wound from wire which is drawn to a generally diamond-shaped cross-section. The wound wire is coiled to a predetermined diameter preferably slightly larger than the diameter of a threaded hole in a female member in which the insert is to be disposed. The threaded screw is free-running in the insert until a predetermined magnitude of loading is encountered at which time a locking and anti-vibration interaction occurs between the crest of the male thread on the screw and the insert. The crest of the male thread is radially compressed when moved axially and circumferentially so as to positively resist loosening under vibration. The interaction between the insert and screw also positively seats and locks the insert in the female member.
    Type: Grant
    Filed: July 7, 1977
    Date of Patent: August 15, 1978
    Assignee: Microdot, Inc.
    Inventor: William D. Myers
  • Patent number: 4103400
    Abstract: The disclosure relates to a dart clip for retaining a resilient trim and impact strip on a vehicle bumper.
    Type: Grant
    Filed: July 25, 1977
    Date of Patent: August 1, 1978
    Assignee: Microdot Inc.
    Inventor: Robert A. Munse
  • Patent number: 4099820
    Abstract: The disclosure relates to a socket for a vehicle light bulb. The sides of the socket are cut or embossed to provide oppositely disposed J-slots having circumferentially extending portions for the seating of retaining pins on the light bulb. A cut or embossed slot is provided in the wall at one side, 90.degree. from the J-slots, for orienting the bulb relative to the socket. The socket may be used as original equipment or as a replacement part for a damaged socket.
    Type: Grant
    Filed: June 1, 1977
    Date of Patent: July 11, 1978
    Assignee: Microdot Inc.
    Inventor: Don L. DeLano
  • Patent number: 4097168
    Abstract: The disclosure relates to a fastener for use in highly stressed connections particularly in environments and with materials susceptible to stress corrosion or delamination. The fastener is installed in aligned openings in abutting components and exibits an interference fit therewith to maximize fatigue life of the connection. The interference fit is controlled in a unique manner.
    Type: Grant
    Filed: March 21, 1977
    Date of Patent: June 27, 1978
    Assignee: Microdot Inc.
    Inventor: Paul V. Pagel
  • Patent number: 4089533
    Abstract: A seal ring for use on a piston or rod has a static sealing periphery that provides sealing contact across its entire surface and includes an interference lip for high sealing contact and a dynamic sealing periphery that has large and small diameter portions with a flexible flared lip hinged to the end of the large diameter portion and extending from it along most of the length of the small diameter portion but being radially spaced from it.
    Type: Grant
    Filed: August 8, 1977
    Date of Patent: May 16, 1978
    Assignee: Microdot Inc.
    Inventor: Charles B. Knudson
  • Patent number: 4077539
    Abstract: A plurality of lengths of wires in a hopper are fed to a drum having spaced slots which receive the wires and advance them to a station at which a terminal is attached to the end. Difficulty is experienced when moving a length of wire from the group in the hopper and delivering it to a slot in the drum. A driven belt forms the wall at the rear of the hopper for rolling the lengths of wire downwardly about a feed wheel which has a passage thereabout defined by a face of a pawl. The bottom and outer surfaces of the pawl are urged by the ends of spring pressed plungers toward the feed wheel so as to be full-floating in the plane of the belt and laterally thereof.
    Type: Grant
    Filed: July 28, 1976
    Date of Patent: March 7, 1978
    Assignee: Microdot Inc.
    Inventor: Malcolm E. Buffaloe
  • Patent number: 4072384
    Abstract: The disclosure relates to a lamp socket having an improved core that facilitates assembly and improved contact of the light bulb with the terminals of the socket. The core is generally cylindrical in shape and has one or more passageways therein adapted to accept and retain complimentary spade terminals. A spring is positioned around the core in the socket housing to provide the necessary lost motion to maintain contact pressure. Locking tabs prevent separation of the core from the housing.
    Type: Grant
    Filed: December 1, 1976
    Date of Patent: February 7, 1978
    Assignee: Microdot Inc.
    Inventor: Marvin W. Moore
  • Patent number: 4070088
    Abstract: An electrical connector pin contact formed of a single blank of sheet metal including a pin section formed of a contoured strip-like portion extending outwardly from a main body part which includes a wire terminal portion to a rounded nose portion where it is folded back on itself to define two laterally spaced, medially bulged and oppositely longitudinally channeled arms, a free return end of the folded-back arm being engageable with but movable in relation to a part of the main body part to increase resistance of the bulged portions of the arms to movement toward each other when inserted in a mating socket contact. In one form the contact, which may be of either the pin or socket type, is insertable in and removable from its holder by pushing it into or out of holding engagement with a friction retaining portion.
    Type: Grant
    Filed: May 18, 1976
    Date of Patent: January 24, 1978
    Assignee: Microdot, Inc.
    Inventor: James L. Vaden
  • Patent number: 4024892
    Abstract: A co-axial, dual trigger valve mechanism for use in a nut runner, said valve mechanism being of such a construction as to permit low air flow initially so as to deliver only minimum acceptable torque to the nut with the result that the tool is caused to stall out at this low flow in cases where the nut has been properly pre-crimped and then upon further depression of the trigger full air flow will result causing the nut to be fully and properly installed. Conversely, if the nut has not been properly pre-crimped, the initial depression at the low pressure will cause the nut to be fully run all the way down thus indicating to the operator that the nut is improper and must be removed and replaced.
    Type: Grant
    Filed: March 8, 1976
    Date of Patent: May 24, 1977
    Assignee: Microdot, Inc.
    Inventors: Robert C. Prisco, Paul D. Myers
  • Patent number: 3937120
    Abstract: A thread forming screw is disclosed having a pilot-drilling tip in which two longitudinal flutes are provided with generally flat and substantially coplanar radial walls defining side cutting edges. Forwardly inclined end portions of said walls terminate in end cutting edges displaced on opposite sides of said plane. The end cutting edges are backed by substantially flat receding walls. The side cutting edges are backed by convexly curved walls.
    Type: Grant
    Filed: January 28, 1975
    Date of Patent: February 10, 1976
    Assignee: Microdot Inc.
    Inventor: Robert A. Munse
  • Patent number: 3930771
    Abstract: An apparatus for making a dual seal insulator including an insert and a pair of elastomeric seals each united to one of the ends of the insert, wherein portions of the insert and the seals define a plurality of bores. The insulator is formed by mounting the insert in a mold to form a pair of mold cavities at each end of the insert and placing core pins in the bores of the insert so that they extend from the insert across the cavities. A keyway, disposed longitudinally on the circumference of the insert between the ends thereof, cooperates with the enclosure to define a passage between the mold cavities. An elastomeric material is pressed into one of the cavities so that a portion of the material is forced through the passage into the other of the cavities. In this manner, the pair of elastomeric seals is simultaneously molded at opposite ends of the insert. The insulator is then cured and removed from the enclosure and the core pins are extracted from the bores.
    Type: Grant
    Filed: August 5, 1974
    Date of Patent: January 6, 1976
    Assignee: Microdot Inc.
    Inventor: John E. Meyn
  • Patent number: D242831
    Type: Grant
    Filed: January 22, 1976
    Date of Patent: December 28, 1976
    Assignee: Microdot, Inc.
    Inventor: Fred Frieden