Patents by Inventor David W. MacAvoy

David W. MacAvoy has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4703987
    Abstract: A deformable plastic strip (44') is longitudinally slotted (60) along one edge to define a plurality of laterally separated longitudinal columns (62), cut, and then rolled into a tubular sleeve to form a retention member (44) which is configured to be coaxially driven into an annular passageway (72) formed between an insert (24) and a connector shell (10), engagement of the slotted end portion with an axial shell face (16) causing the columns to axially collapse in accordion like fashion and radially wedge themselves into the passageway whereby to interferencingly retain the insert in the shell.
    Type: Grant
    Filed: September 27, 1985
    Date of Patent: November 3, 1987
    Assignee: Amphenol Corporation
    Inventors: David O. Gallusser, David W. MacAvoy
  • Patent number: 4678260
    Abstract: The invention is an EMI shielded electrical connector characterized by a molded plastic housing (20) that has embedded therein an electrically conductive wire mesh (10). The wire mesh (10) includes an electrically exposed internal shoulder (11) and ends (12 and 13) that may be connected to other electrically conductive members to ground out unwanted electromagnetic interference.
    Type: Grant
    Filed: May 14, 1984
    Date of Patent: July 7, 1987
    Assignee: Allied Corporation
    Inventors: David O. Gallusser, Robert W. Brush, Sr., David W. MacAvoy
  • Patent number: 4648670
    Abstract: An anti-decoupling mechanism for preventing unwanted decoupling of an electrical connector as a result of vibration. The decoupling mechanism includes a one-piece gull-shaped spring (400) mounted to a connector coupling ring (300). The spring (400) includes a central portion (410) having an arcuate groove (411) formed thereon and a pair of wing members (420, 430) extending outwardly therefrom, the arcuate portion being secured in place by a pin (600) interference fit through a hole (331) disposed in the coupling ring. Each wing member includes first and second strips in superposed relation and a medial enlargement or tooth member (440) projecting radially inward from a forward surface of one of the strips and adapted to engage ratchet teeth (141) disposed on one of the connectors, the wings biasing the tooth against the ratchet teeth to increase anti-decoupling torque.
    Type: Grant
    Filed: May 7, 1980
    Date of Patent: March 10, 1987
    Assignee: Allied Corporation
    Inventors: Stephen Punako, David W. MacAvoy
  • Patent number: 4536048
    Abstract: An annular, radially expansible/contractible, spiral spring (50) includes a cantilever arm (51) provided with a distal locking tab (60), the spring being interference fit in an annular groove (26) of a plug shell (20) to both mount a coupling nut (30) thereon and provide means for resisting rotation of the coupling nut in both directions, the tab (60) being adapted to engage a contiguous succession of ratchet teeth (40) disposed annularly around a cylindrical hub (36) extending coaxially from the coupling nut, external coupling torque tending to expand the spring whereby the spring slides about the groove and external uncoupling torque tending to contract the spring and tighten the spring fitment around the plug shell, increased torque driving tab (62) and arm (60) radially outward from the ratchet tooth to allow coupling nut rotation.
    Type: Grant
    Filed: May 11, 1983
    Date of Patent: August 20, 1985
    Assignee: Allied Corporation
    Inventors: Alan L. Schildkraut, David W. MacAvoy
  • Patent number: 4468078
    Abstract: The invention is an electrical connector that has a forwardly removable coupling ring (30). The coupling ring (30) is characterized by annular members (31, 32) that are connected together by one or more removable fasteners (50, 51) and held in place in front of the housing flange (11) by a snap ring (40) located in a groove (12) in the housing (10).
    Type: Grant
    Filed: July 28, 1982
    Date of Patent: August 28, 1984
    Assignee: The Bendix Corporation
    Inventors: David L. Frear, Stephen Punako, David W. MacAvoy, David O. Gallusser
  • Patent number: 4461526
    Abstract: In order to retard the rotation of a coupling nut (40) mounted to an electrical connector housing (10) an annular ring (50) comprised of a rubber having a durometer of about 70 is located in pressure tight contact between the housing (10) and coupling nut (40).
    Type: Grant
    Filed: July 28, 1982
    Date of Patent: July 24, 1984
    Assignee: The Bendix Corporation
    Inventors: David O. Gallusser, David W. MacAvoy, Stephen Punako, David L. Frear
  • Patent number: 4456320
    Abstract: This invention provides an improved moisture seal for an electrical connector assembly. The invention is characterized by an annular rubber member (10) having generally flat surfaces (11, 12, 13, 14) and an annular groove (15) in one of the surfaces (11) that abuts against a forward surface of one of the housings (30). A second groove (16) extending radially from the annular groove (15) to a circumferential surface (14) provides an escape path for air that would normally be trapped in the annular groove (15) when the sealing member (10) is compressed.
    Type: Grant
    Filed: July 28, 1982
    Date of Patent: June 26, 1984
    Assignee: The Bendix Corporation
    Inventors: David O. Gallusser, David W. MacAvoy, Stephen Punako, David L. Frear
  • Patent number: 4431243
    Abstract: This invention provides a contact stop for an electrical connector of the type having front insertable contacts. The invention is characterized by a plate (40) of hard dielectric material located adjacent the rear face of a contact retaining insert (30). The plate (40) has a plurality of passages (41) each of which terminate at one end in a forwardly extending solid wall tubular tower (42) which has a forward end or a shoulder (43) which abuts against a rearwardly facing shoulder (23) on a contact (20) in the passage (31) of the insert (30) to limit rearward movement of the contact after it has been inserted into the insert (30).
    Type: Grant
    Filed: July 28, 1982
    Date of Patent: February 14, 1984
    Assignee: The Bendix Corporation
    Inventors: Stephen Punako, David W. Macavoy, David O. Gallusser, David L. Frear
  • Patent number: 4415213
    Abstract: An improved hermaphrodite electrical connector (10) of the type including side by side pin connector (16) and socket connector (12), projecting from a base plate (18), and carrying a coupling ring lever assembly (22) for joining the mating connectors, in which the connector shells (32, 34) are integral with base plate, and the coupling ring (26) and lever (24) are also integrally formed. Various means including stops (58) prevent over-compression of a wave washer (52) used to friction load the coupling ring-lever assemblies (22).
    Type: Grant
    Filed: November 2, 1981
    Date of Patent: November 15, 1983
    Assignee: The Bendix Corporation
    Inventors: Stephen Punako, David W. MacAvoy
  • Patent number: 4387943
    Abstract: The invention is an electrical connector assembly of the type having a housing (50); a rubber moisture sealing grommet (70) and a contact retaining insert assembly (10 and 20) characterized by a rear insert (10) having a plurality of passages (15) that contain resiliently and radially deflectable members (11) that include at the forward ends thereof a radially inwardly chamfered surface (13) and, rearwardly adjacent to the chamfered surface (13), a forwardly facing shoulder (12) to engage the rearwardly facing shoulder (31) of a contact (30) located in a passage; and a plurality of passages (22) and a front insert (20) each communicating with a respective forwardly facing shoulder (12) of the deflectable members (11) to enable a tool to be inserted into either the front passages (22) or rear passage (15) to engage and radially deflect the members (11) to release the contact (30) for removal from the rear of the connector.
    Type: Grant
    Filed: June 30, 1981
    Date of Patent: June 14, 1983
    Assignee: The Bendix Corporation
    Inventors: Dee A. Werth, Alan L. Schildkraut, David W. MacAvoy
  • Patent number: 4387945
    Abstract: An electrical connector insert (10) for releasably retaining a plurality of contacts (30) in each passage (15) extending through the insert (10). Each of the passages (15) in the insert include an annular member (20) which has an arcuate surface (21) that engages an annular groove (31) in a contact (30). The contact (30) may be inserted from the front or rear of the connector and removed from the front or rear of the connector.
    Type: Grant
    Filed: June 30, 1981
    Date of Patent: June 14, 1983
    Assignee: The Bendix Corporation
    Inventor: David W. MacAvoy
  • Patent number: 4255008
    Abstract: An electrical connector assembly that is readily coupled or uncoupled is provided with means for retarding premature uncoupling thereof. The connector assembly comprises a first shell 100 having a flange 140 thereabout and bosses 111 on the periphery thereof adjacent the flange, and a coupling nut 300 that has stop members 311 on the inner wall thereof. A spring 500 is situate between the flange 140 of the first shell 100 and the end wall 305 of the coupling nut, with the stop members preventing rotational movement of the spring 500 relative to the coupling nut 300, while the bosses 111 retard movement of the spring 500 relative to the first shell 100.
    Type: Grant
    Filed: August 31, 1979
    Date of Patent: March 10, 1981
    Assignee: The Bendix Corporation
    Inventors: Gene L. Snyder, David W. MacAvoy
  • Patent number: D286766
    Type: Grant
    Filed: July 29, 1983
    Date of Patent: November 18, 1986
    Assignee: Allied Corporation
    Inventors: David O. Gallusser, David W. MacAvoy, David L. Frear, Stephen Punako
  • Patent number: RE32787
    Abstract: This invention provides an improved moisture seal for an electrical connector assembly. The invention is characterized by an annular rubber member (10) having generally flat surfaces (11, 12, 13, 14) and an annular groove (15) in one of the surfaces (11) that abuts against a forward surface of one of the housings (30). A second groove (16) extending radially from the annular groove (15) to a circumferential surface (14) provides an escape path for air that would normally be trapped in the annular groove (15) when the sealing member (10) is compressed.
    Type: Grant
    Filed: February 28, 1986
    Date of Patent: November 22, 1988
    Assignee: Amphenol Corporation
    Inventors: David O. Gallusser, David W. MacAvoy, Stephen Punako, David L. Frear