Patents by Inventor David M. Tenniswood

David M. Tenniswood 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: 4889964
    Abstract: The rotating cam limit switch includes a hub, a position screw arm, a position screw, a position wheel, a retractable cam, a dwell wheel, a dwell screw, a dwell screw arm, a spring wave washer and a locking ring. The hub is to be mounted on a rotating shaft which is to activate a non-rotating switch assembly. Near a first axial end, an integral position screw arm and position flange extend radially from the integral hub. The position screw arm carries a position screw, which is snap fitted onto the arm, which operatively engages the position wheel rotatably mounted on the hub next to the position screw arm. The dwell wheel is also rotatably mounted with respect to the hub. The dwell wheel is operatively engaged by the dwell screw carried by the dwell screw arm integrally formed with a dwell flange. The dwell screw arm is fixed to the hub by hub a anti-rotation device. The wave washer and the locking ring, mounted near a second axial end of the hub, compress the rotating components together.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: December 26, 1989
    Assignee: Gleason Reel Corp.
    Inventors: Kevin I. Pea, David M. Tenniswood, Steven M. Loeck
  • Patent number: 4885437
    Abstract: The rotating cam limit switch includes a hub, a position screw area, a position screw, a position wheel, a retractable cam, a dwell wheel, a dwell screw, a dwell screw arm, a spring wave washer and a locking ring. The hub is to be mounted on a rotating shaft which is to activate a non-rotating switch assembly. Near a first axial end, an integral position screw arm and position flange extend radially from the integral hub. The position screw arm carries a position screw, which is snap fitted onto the arm, which operatively engages the position wheel rotatably mounted on the hub next to the position screw arm. The dwell wheel is rotatably mounted on the position wheel. The dwell wheel is operatively engaged by the dwell screw carried by the dwell screw arm integrally formed with a dwell flange. The dwell screw arm is rotatable on the hub but fixed to the position wheel. The wave washer and the locking ring, mounted near a second axial end of the hub, compress the rotating components together.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: December 5, 1989
    Assignee: Gleason Reel Corp.
    Inventors: David M. Tenniswood, Kevin I. Pea, Steven M. Loeck
  • Patent number: 4844401
    Abstract: A mounting assembly for securing a control relay in sound isolation to the vehicle chassis to prevent the energizing and de-energizing noise of the relay from being transmitted through the vehicle chassis. The assembly includes a pair of absorbing members which receive a mounting bracket attached to the vehicle chassis and which are seated within a retaining sleeve of the relay housing. The absorbing members prevent contact between the mounting bracket and the relay housing and absorb the noise of the relay to prevent transmission to the vehicle chassis. An abutment flange and a retaining clip on the mounting bracket disposed on opposite sides of the retaining sleeve cooperate with a dividing wall in the retaining sleeve to prevent axial movement of the mounting bracket and absorber members relative to the control relay.
    Type: Grant
    Filed: June 29, 1988
    Date of Patent: July 4, 1989
    Assignee: Hi-Ram, Inc.
    Inventor: David M. Tenniswood
  • Patent number: 4389056
    Abstract: A motorized wheelchair tie-down system has been developed for use in vehicles by wheelchair bound driver or passenger. This system provides for automatic securement of the wheelchair to the vehicle by operation of a switch. The switch powers a motor causing a linkage system to lower a rear bar on the wheelchair into an anchor while a pivoting anchor carries the forward portion of the wheelchair into a locked position.
    Type: Grant
    Filed: October 20, 1980
    Date of Patent: June 21, 1983
    Assignee: Creative Controls, Inc.
    Inventor: David M. Tenniswood
  • Patent number: 4311293
    Abstract: A rolling conductor support for supporting, guiding, and protecting electrical, hydraulic, coolant and the like conductors extending between parts of machines which move relative to one another on guides or tracks. The conductor support comprises a plurality of chains connected in parallel, laterally spaced relation by conductor supporting bridges to which the conductors are fastened by releasable securements. The chains are comprised of a series of alternating and overlapping follower links and control links, overlapping portions of which are pivotally connected to each other. Six holes are formed in each follower link, one at the center of each end for making a pivotal connection to the overlapping control link. The remaining four holes, having stop pins secured therein, are positioned in pairs at each end of the link adjacent the pivotal connection.
    Type: Grant
    Filed: July 9, 1979
    Date of Patent: January 19, 1982
    Assignee: McGraw-Edison Company
    Inventor: David M. Tenniswood
  • Patent number: 4129277
    Abstract: The effective movement range of a rolling support such as a flexible chain linkage for electrical conductors and/or fluid conduits is materially increased by the provision of one or more retractable roller supports for the elevated cantilevered section of the rolling support upstream from its lower anchored end. The retractable roller support allows the rolling loop portion of the rolling support to pass through the retractable roller support in either direction. The weight of the rolling support is utilized to bias the retractable roller support toward its active supporting position.
    Type: Grant
    Filed: February 7, 1977
    Date of Patent: December 12, 1978
    Assignee: McGraw-Edison Company
    Inventor: David M. Tenniswood