Patents by Inventor John H. Bowman

John H. Bowman 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: 5746302
    Abstract: Conveyor cleaning assemblies are disclosed for cleaning endless conveyors such as for conveyor belts or chains. Each assembly includes a cleaning head which carries brushes for engaging one or more adjacent surfaces of the conveyor and a head support for holding the cleaning head in a fixed position adjacent a predetermined portion of the conveyor path. The cleaning head is engaged on the head support by sliding engagement movement in a direction generally parallel to the direction of movement of the conveyor that is contacted by the cleaning head, with the cleaning head and the head support having abutment stops to limit this engagement movement. Accordingly, the friction forces of the conveyor hold the cleaning head in position on the support without requiring any further attachment devices. In one embodiment, a cleaning head with brushes and a scraper is so mounted for cleaning a conveyor belt. In other embodiments cleaning heads with brushes are so mounted on opposites sides of large conveyor chains.
    Type: Grant
    Filed: April 2, 1996
    Date of Patent: May 5, 1998
    Inventor: John H. Bowman
  • Patent number: 5671838
    Abstract: Multiple conveyor cleaning assemblies are mounted on a section of the support rail of a large chain conveyor, with each assembly including one or more long-bristled brushes for cleaning the chain as it moves through that rail section. The side cleaners are mounted on supports which are readily swingable between their chain-engaging cleaning positions and retracted positions wherein the brushes are withdrawn from the chain and related structures for ready removal and replacement of the cleaning heads. A single latch bolt holds each of these side cleaners in the cleaning position. Further, each cleaning head is engaged on its respective support by simple slide engagement in the direction of movement of the contacted conveyor chain whereby the frictional engagement of the chain holds the cleaner in its cleaning position on the support without further attachment between the cleaning head and its support.
    Type: Grant
    Filed: April 2, 1996
    Date of Patent: September 30, 1997
    Inventor: John H. Bowman
  • Patent number: 4678075
    Abstract: A cleaning apparatus for an overhead conveyor system is disclosed which provides continuous cleaning of the system for smooth, trouble-free operation. The apparatus preferably includes one or more exteriorly-mounted wire brush assemblies which are arranged on the guide-rail of the conveyor system for operative cleaning engagement with the movable conveyor. A threaded adjustment arrangement is preferably provided so that the pressure exerted on the conveyor by the cleaning brushes can be selectively varied. For conveyors comprising an enclosed, box-section guide rail, the present apparatus is preferably configured to include a tension-carrying internal brush assembly which is integrated into the conveyor itself. In the preferred form, cleaning engagement is effected between the exteriorly-mounted brushes and the tension-carrying internal brush whereby the internal brush is periodically cleaned.
    Type: Grant
    Filed: January 16, 1986
    Date of Patent: July 7, 1987
    Inventor: John H. Bowman, Jr.
  • Patent number: 4228983
    Abstract: The outboard motor locking device includes a block which is fixed to the inner wall of the transom of a rowboat and which has a pair of downwardly extending clamp screw receiving slots that are adapted to receive the clamping screws of an outboard motor mounting clamp. Within the block between the slots is a cavity and an arm is rotatably mounted therein about the midpoint thereof. A pin is pivotally connected to each end of the arm and each pin is received in a pin hole which traverses and extends across one of the slots. A key operated lock is connected to the arm for rotating the arm to move th pins into and out of latching positions across the slots for locking the clamp screws within the slots. The locking device further includes a cover which is pivotally mounted to one side of the block and is receivable over the outer ends of the clamp screws and a portion of the outboard motor mounting clamp.
    Type: Grant
    Filed: December 1, 1978
    Date of Patent: October 21, 1980
    Inventor: John H. Bowman, Jr.
  • Patent number: 3951484
    Abstract: The roller assembly is utilized at the end of a turn in a turn chain assembly in a towveyor system. In the towveyor system a tow chain is guided and carried around the turn by a turn chain of the turn chain assembly. The roller assembly includes a non-rotatable stub shaft, a larger diameter, rotatable, hollow cylinder coaxial with the stub shaft, two axially spaced ball bearings rotatably mounting the cylinder on the shaft and a collar fixed on the cylinder for maintaining a tow chain at a desired height while it travels around the cylinder. A portion of the shaft extends axially beyond the cylinder for mounting the roller assembly in the turn chain assembly.
    Type: Grant
    Filed: April 14, 1975
    Date of Patent: April 20, 1976
    Assignees: Albert G. Nicholson, Robert W. Nicholson
    Inventor: John H. Bowman, Jr.