Patents by Inventor David L. Collier

David L. Collier 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: 4743023
    Abstract: A multi-dimensional ball-type maze puzzle game comprises a plurality of individual, maze containing modules secured together to form a vertical stack, aligned openings being provided at selected points through the modules for interconnecting the interiors of adjacent modules in the stack whereby to permit an object ball to pass from maze level to maze level upon successful completion of the maze associated with the preceding level. Locking clips are provided to secure the modules in closed, operative condition, and to secure adjacent modules together in a vertical stack.
    Type: Grant
    Filed: October 10, 1986
    Date of Patent: May 10, 1988
    Assignee: Collier Products, Inc.
    Inventor: David L. Collier
  • Patent number: 4651675
    Abstract: A small animal exercise maze comprises a multiple compartment structure formed of a pluralty of wall panels secured removably at their inner ends to a support base and joined together at their outer ends by clips which secure together the outer ends of adjacent wall panels. Passageway openings are provided through selected common walls of adjacent compartments to form a maze path for an animal to move to and from a specialized compartment provided by omitting selected interior wall within the unit. An animal exercise wheel is mounted within the specialized compartment and the latter is closed by an approriately dimensioned closure wall.
    Type: Grant
    Filed: February 4, 1985
    Date of Patent: March 24, 1987
    Assignee: Collier Products, Inc.
    Inventor: David L. Collier
  • Patent number: 4437280
    Abstract: One of a pair of panels to be joined together is provided with a longitudinally extending panel support groove cut parallel to an edge of the panel, and a connector mounting slot is cut from the edge of the panel inward, perpendicularly crossing said groove, terminating a spaced distance inwardly of the groove. The second of the pair of panels incorporates a bore arranged to be a spaced distance above, and aligned with said mounting slot when the panels are in position to be joined together. A panel has a connector body mounted on a base slidably engaging said mounting slot, and a locking pin on the connector body is arranged to intercept the bore in the other panel, thereby releasably securing the second panel to the first panel by means of the connector.
    Type: Grant
    Filed: August 27, 1981
    Date of Patent: March 20, 1984
    Inventor: David L. Collier
  • Patent number: 4301702
    Abstract: A frame supports a hollow housing which mounts thereon a hot wire die support plate from the outer side of which projects a hot wire die. The housing is pivoted to the frame for movement between an operative position in which the die projects upward for cutting a cavity in a block of material that is moved over the support plate between limit-defining stop pins, and a discharge position in which the die projects downward for the gravity release of scrap material resulting from the cutting operation. The scrap material falls onto a hot wire scrap cutting grid extending across a scrap discharge opening below the housing, whereby the scrap material is reduced to small particles as it gravitates through the hot wire grid.
    Type: Grant
    Filed: April 24, 1980
    Date of Patent: November 24, 1981
    Inventor: David L. Collier
  • Patent number: 4208850
    Abstract: A base member is secured to one of a pair of cabinet panels to be connected together, and a locking member carried slidably by the base member is movable from a retracted position rearwardly of the front side of the base member to an extended position in which it extends forwardly beyond said front side into a locking opening provided in the other of the pair of cabinet panels, the panel to which the base member is secured being provided with an abutment surface spaced from the front side of the base member sufficiently to receive between them the portion of the other panel provided with the locking opening, whereby the extended locking member enters the locking opening and connects the panels together.
    Type: Grant
    Filed: May 11, 1978
    Date of Patent: June 24, 1980
    Inventor: David L. Collier
  • Patent number: 4201429
    Abstract: A cabinet drawer is supported for sliding movement in a cabinet by means of an elongated guide secured to the cabinet frame and a cooperating elongated slide secured to the drawer, the guide and slide being secured to the cabinet frame and drawer, respectively, each by a connector comprising a body member adapted to be secured to the cabinet or drawer and having a slot arranged to removably receive a tab projecting from the guide or slide, and a locking member mounted movably on the body member and arranged for retractable reception through aligned transverse openings in the connector body and tab, for releasably securing the tab to the connector body.
    Type: Grant
    Filed: November 13, 1978
    Date of Patent: May 6, 1980
    Inventor: David L. Collier