Patents by Inventor William C. Stark

William C. Stark 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: 4695486
    Abstract: Self-supporting paint shields are wound into a spiral having an inside diameter different from a diameter of a raised circular object being shielded and having portions overlapping each others sufficiently to remain overlapping when this wound paint shield is adapted in diameter to a raised circular object. The overlapping portions in the wound paint shield are slidable relative to each other and are adapted to remain slidable relative to each other when the wound paint shield is fitted onto the raised object whereby the overlapping portions of the wound paint shield continue sliding relative to each other until the wound paint shield on the raised object is adapted in inside diameter to such raised object and exerts a gripping action supporting the wound paint shield on the raised object, whereby paint may be applied to a surrounding surface exclusive of the shielded object.
    Type: Grant
    Filed: May 16, 1983
    Date of Patent: September 22, 1987
    Inventor: William C. Stark
  • Patent number: 4656058
    Abstract: Self-supporting paint shields have at an end thereof a continuously annular wall portion defining an opening for receiving a circular object to be shielded. This annular wall portion has around that opening a tapering brim and has across that opening a diameter different from a diameter of that circular object. The annular wall portion is adaptable in diameter to the circular object and is adapted to extend with its tapering brim to a surface to be painted, while the continuously annular wall portion is in contact with the circular object at the mentioned end, thereby exerting a gripping action supporting the paint shield on the circular object. The paint shields preferably have a circumferential bevel extending in a continuous transition from an outer shield surface to the paint shield opening. Such opening preferably is smaller in diameter than the circular object, and the paint shield is twisted at the annular wall portion onto that object.
    Type: Grant
    Filed: August 9, 1985
    Date of Patent: April 7, 1987
    Inventor: William C. Stark
  • Patent number: 4559245
    Abstract: Paint shield holders and shielding methods form a pair of planar sheets and an interconnecting resilient bight portion into a clip for receiving a planar edge portion of a paint shield between major surfaces which in area are a multiple of a cross-section of each planar sheet perpendicular to the major surfaces. The resilient clip is employed to bias the planar sheets at their major surfaces into frictional engagement with the contacted planar edge portion of the inserted shield. Instead of nuts, bolts or other fasteners, the mentioned frictional engagement is employed as the only agency at the major surfaces of the planar sheets for holding the planar edge portion of the shield in place upon mere manual insertion of the shield at the planar edge portion into the clip.
    Type: Grant
    Filed: August 25, 1983
    Date of Patent: December 17, 1985
    Inventor: William C. Stark