Patents by Inventor Donald C. Morrison

Donald C. Morrison 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: 9067691
    Abstract: A tow vehicle for aircraft comprises a nose gear support assembly that can be raised and lowered relative to the vehicle. The support assembly can comprise a base portion and nose gear support portion pivotal about an upright axis relative to the base portion. Bearings can be positioned inwardly of the periphery of the support portion to support the support portion on the base portion. The bearings can be positioned partially in pockets provided in the base portion and in recesses in the support portion. A torque sensor can be coupled to the base portion and support portion to provide an output signal indicative of the torque between these components. An indicator, such as an alarm, can indicate when the torque exceeds first and second thresholds and can remain on if a second higher threshold is exceeded until, for example, an authorized individual turns off the indicator.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: June 30, 2015
    Assignee: Lektro, Inc.
    Inventors: Charles R. Pugh, Donald C. Morrison
  • Publication number: 20120271495
    Abstract: A tow vehicle for aircraft comprises a nose gear support assembly that can be raised and lowered relative to the vehicle. The support assembly can comprise a base portion and nose gear support portion pivotal about an upright axis relative to the base portion. Bearings can be positioned inwardly of the periphery of the support portion to support the support portion on the base portion. The bearings can be positioned partially in pockets provided in the base portion and in recesses in the support portion. A torque sensor can be coupled to the base portion and support portion to provide an output signal indicative of the torque between these components. An indicator, such as an alarm, can indicate when the torque exceeds first and second thresholds and can remain on if a second higher threshold is exceeded until, for example, an authorized individual turns off the indicator.
    Type: Application
    Filed: March 23, 2012
    Publication date: October 25, 2012
    Inventors: Charles R. Pugh, Donald C. Morrison
  • Patent number: 5368435
    Abstract: A side shifter (20) attachment for a lift truck (10) having an upper crossbar (44) and a lower crossbar (46) is disclosed. The side shifter has a rigid frame (24) slideably positioned with respect to the upper and lower crossbars (44, 46) of the lift truck. The frame (24) has an upper horizontal cross member (26) and a lower horizontal cross member (28). A low-friction slide block (80)is positioned on the lower horizontal cross member (28). A lower intermediate plate (81) having a first (75) and a second (77) surface is positioned between the slide block (80) and the lower crossbar (46). The first surface (75) is in contact with the slide block (80) and the second surface is in contact with the lower crossbar (46). At least the first surface (75) of the lower intermediate plate (81) has a smooth, low-friction surface to facilitate sliding of the lower horizontal cross member (28) with respect to the lower crossbar (46).
    Type: Grant
    Filed: January 28, 1993
    Date of Patent: November 29, 1994
    Assignee: Brudi, Inc.
    Inventors: Wayne W. Bostad, Donald C. Morrison, Dean J. Mao
  • Patent number: 4300301
    Abstract: This invention provides a readily accessible easily manipulatable improved safety assembly for a firearm that can be easily retrofit on many existing firearms without special modification or adaption. By providing rotary action from a finger actuated safety lever operable with a trigger finger maintained adjacent the trigger, a rifle or shotgun may be easily moved without awkwardness from safe to fire condition in a moment of excitement when game or a moving target appears with less chance of awkwardness or an aborted shot.The safety assembly provides in a lateral bore through the trigger guard cage adjacent to and rearward of the pivoted trigger a rotatable barrel like member blocking rearward trigger motion in one detented position and permitting the trigger to move and release the firing pin in a second detented position where a receptacle cavity in the barrel mates with a trigger extension finger and lets the trigger pivot.
    Type: Grant
    Filed: May 16, 1979
    Date of Patent: November 17, 1981
    Inventor: Donald C. Morrison