Patents by Inventor Robert T. Swinderman

Robert T. Swinderman 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: 5048669
    Abstract: A modular conveyor belt sealing system is provided including a plurality of modular units, each unit including a lightweight frame and one or more wear liners removably fastened to the interior of each frame. The modules are removably positioned adjacent each edge of the conveyor belt. The modules extend along each edge of the conveyor belt as desired and are removably fastened in place and to one another end to end. Each module is of equal length and may include different interior configurations of straight, inwardly deflecting or outwardly deflecting wear liners. Each module may additionally include an inner liner attached to the interior of the frame between the frame and the wear liner, with the wear liner spaced apart from the inner liner, defining a passageway therebetween and extending from the bottom of the module at the conveyor belt edge to the top of the module.
    Type: Grant
    Filed: March 13, 1990
    Date of Patent: September 17, 1991
    Assignee: Martin Engineering Company
    Inventor: Robert T. Swinderman
  • Patent number: 4953689
    Abstract: A conveyor belt cleaner which includes a sleeve mounted over a transversely extending support member one or more cleaner elements with a mounting flange at one end for connection to the sleeve, a channel defined between the sleeve and the mounting flange, and a sliding surface associated with the sleeve formed of a plastic having a high degree of lubricity and a low sliding coefficient of friction, the sliding surface adapted to facilitate removal and replacement of the belt cleaner elements. A loose-running fit between mating parts is also provided.
    Type: Grant
    Filed: September 2, 1986
    Date of Patent: September 4, 1990
    Assignee: Martin Engineering Company
    Inventors: Edwin H. Peterson, Harold M. Stetson, Robert T. Swinderman
  • Patent number: 4944386
    Abstract: A mechanism for removing material from the surface of a conveyor belt which includes a blade adapted to be positioned in engagement with the conveyor belt surface, a plurality of tethers each having one end attached to the rigid frame of the conveyor mechanism and having the other end attached to the blade for securing the blade in position relative to the conveyor belt while allowing the blade to move in a vertical direction in response to vertical deflections of the conveyor belt, and a container attached to the blade for receiving and confining varying amounts of a ballast material, whereby the ballast material urges the blade into engagement with the conveyor belt with a force dependent upon the mass of the ballast in the container.
    Type: Grant
    Filed: January 8, 1990
    Date of Patent: July 31, 1990
    Assignee: Martin Engineering Company
    Inventor: Robert T. Swinderman
  • Patent number: 4927003
    Abstract: A heated conveyor belt cleaner is provided including a support shaft positioned adjacent to the belt to be cleaned and generally transverse to the belt's direction of travel, an electric resistance heating element is disposed within the support shaft, a heat conducting medium is disposed between the support shaft and the heating element to effectively conduct heat from said heating element to the support shaft, a mounting sleeve concentrically surrounding the support shaft for mounting a belt scraper element on the support shaft, at least one belt scraper element connected to the mounting sleeve and, through the mounting sleeve, to the support shaft, such that heat generated within the support shaft is communicated from the support shaft through the mounting sleeve to the scraper element to heat the scraper element for effective removal of adherent materials from the conveyer belt.
    Type: Grant
    Filed: June 2, 1989
    Date of Patent: May 22, 1990
    Assignee: Martin Engineering Company
    Inventors: Robert T. Swinderman, David W. Mueller
  • Patent number: 4917231
    Abstract: A conveyor belt cleaner for removing residue from the surface of a conveyor belt is disclosed. The conveyor belt cleaner is radially adjustable through connection with a rotatable support member positioned generally transverse to the direction of conveyor belt travel. The conveyor belt cleaner includes a scraping blade having a curvilinear scraping surface. One edge of the curvilinear scraping surface is in contact with the conveyor belt. The curvilinear scraping surface is configured in a way such that the cleaning angle formed between a first line, tangent to the curvilinear scraping surface and extending through a point where the scraping surface edge is in contact with the conveyor belt, and a second line, either tangent or parallel to the surface of the conveyor belt and extending through the same point where the scraping surface edge contacts the conveyor belt, will remain constant as the conveyor belt cleaner is radially adjusted to compensate for wear to the scraping blade.
    Type: Grant
    Filed: April 20, 1989
    Date of Patent: April 17, 1990
    Assignee: Martin Engineering Company
    Inventor: Robert T. Swinderman
  • Patent number: 4874082
    Abstract: A skirt board and mounting arrangement to seal the side edges of a conveyor belt to prevent the escape of material being conveyed. The skirt board sections include a pair of opposed side faces, one of which is placed against a mounting surface. One of the faces includes a specially constructed engagement surface which is operative, when engaged by a stop to permit the skirt board to be adjusted downwardly toward the conveyor belt but prevents the skirt board from moving upwardly away from the belt. A clamp secures the skirt board against a mounting surface.
    Type: Grant
    Filed: October 14, 1988
    Date of Patent: October 17, 1989
    Assignee: Martin Engineering Company
    Inventor: Robert T. Swinderman
  • Patent number: 4643293
    Abstract: A conveyor belt cleaning arrangement consisting of a transversely disposed support which includes a plurality of connector slots. One or more elastomeric cleaner blades, either of the arm and blade type, include a locking means to releasably connect the blade to the support without the use of fasteners and secure the blade against lateral motion and hold the blade in position for cleaning the belt.
    Type: Grant
    Filed: February 18, 1986
    Date of Patent: February 17, 1987
    Assignee: Martin Engineering Company
    Inventor: Robert T. Swinderman
  • Patent number: 4598823
    Abstract: A conveyor belt cleaning arrangement consisting of a transversely disposed support which includes a plurality of connector slots. One or more elastomeric cleaner blades, either of the doctor blade type or the arm and blade type, include a locking device to releasably connect the blade to the support without the use of fasteners and secure the blade against lateral motion and hold the blade in position for cleaning the belt.
    Type: Grant
    Filed: February 13, 1984
    Date of Patent: July 8, 1986
    Assignee: Martin Engineering Company
    Inventor: Robert T. Swinderman
  • Patent number: 4573567
    Abstract: The invention relates to a conveyor belt housing access port and elastic closure therefor, for use on a conveyor belt cleaner installation wherein hinges, catches, gaskets and the like are completely eliminated. The cover is retained in place by inherent tension and includes securing means which may incorporate a magnetic force, or interengaging means between the cover and a continuous rim about the opening. The securement may involve an enlargement of the rim such as a ledge, or a flange and an interengaged groove, or flange on the cover operatively related to such enlargement.
    Type: Grant
    Filed: February 28, 1983
    Date of Patent: March 4, 1986
    Assignee: Martin Engineering Company
    Inventor: Robert T. Swinderman
  • Patent number: 4359150
    Abstract: A conveyor belt cleaner mounted on a transverse support member including an arm extending from a mounting bracket and a belt cleaner blade secured on the arm. A positioning arrangement is provided between the arm and the cleaner blade to allow the blade to rotate about the central axis of the arm within predetermined limits in either direction so as to allow the scraping edge of the cleaner blade to align with the surface of the conveyor belt being cleaned. A nut and a resilient washer are provided to secure the blade against a collar. An alternative securement includes a pin-and-slot connection which allows the same rotative action of the blade relative to the arm and having multiple seals against the entrance of dirt into the connection.
    Type: Grant
    Filed: September 30, 1981
    Date of Patent: November 16, 1982
    Assignee: Martin Engineering Company
    Inventors: Michael A. Bowman, Steven R. Frank, Richard P. Stahura, Robert T. Swinderman