Patents by Inventor R. Glen Stewart

R. Glen Stewart 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: 5147295
    Abstract: An implanting gun apparatus (10) is described. A drive rod (23) is linearly moveable in a handle assembly (11) by a first pivotable linkage (16) actuated by a trigger (14), to urge a pellet (101) from a carrier (100) through a head assembly (12) and into a needle (13). A second pivotable linkage (24), also actuated by the trigger, retracts the needle, the head assembly, and the carrier into the handle after the pellet has been urged into the needle. The gun apparatus is particularly adapted to implant pellets in animals, particularly as medicament pellets.
    Type: Grant
    Filed: January 23, 1991
    Date of Patent: September 15, 1992
    Assignee: Ideal Instruments, Inc.
    Inventor: R. Glen Stewart
  • Patent number: 5106370
    Abstract: An improved automatic pellet carrier (100) fed pellet implanting gun apparatus (10) is described. The carrier is mounted in an opening (12b) through a front side (12c) of a retractable head (12) which is linearly moveable in a nose end (11c) of a handle assembly (11) along a longitudinal axis a--a. The carrier relies upon an internal spring (107) to automatically register a pellet (101) in a bore (12a) in the retractable head so that by actuating a trigger (14), a drive rod (23) which travels linearly along the axis a--a and through the bore in the retractable head and through the carrier, can move the pellet into the barrel (13a) of a needle (13) that has been inserted into an animal or the like. After the pellet enters the needle, the needle, the retractable head and the carrier are mechanically retracted into the gun with the carrier retracting along a slot (11f) in the nose so that the pellet is deposited in the animal, unobstructed by the needle.
    Type: Grant
    Filed: June 24, 1991
    Date of Patent: April 21, 1992
    Assignee: Ideal Instruments, Inc.
    Inventor: R. Glen Stewart