Patents by Inventor Earl Blair

Earl Blair 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: 5124513
    Abstract: A heat shrinkable tube-like extension for toggle switch operators. In its preferred embodiment is comprises a length of heat shrink tubing with one end coated with a bondable plastic material. The one end is heated and comprised to form a beaver tail end thereafter the open end is inserted over the end of the handle of a toggle switch. Heat is applied to the end over the handle to shrink it into engagement with the handle. In an alternate embodiment, a flat insert is placed in the open end before heat shrinking. It is then heated to flatten the outer end. The extenders may be color coded and also may include printed or hand lettered switch identification on the extension portion.
    Type: Grant
    Filed: April 19, 1991
    Date of Patent: June 23, 1992
    Inventor: Earl Blair
  • Patent number: 5115603
    Abstract: A roof valley structure including a unitary panel of durable polypropylene-rubber material having a longitudinal flexure section including a large fold through its center, interlocking ridges spared on each side of the flexure section, and a plurality of spaced parallel longitudinal ribs on the outside of each interlocking ridge. The ribs, folds and ridges are reduced in size slightly at one end of each panel to permit one panel to overlie and interlock with a panel lower on the roof valley. Another embodiment connects two or more such panels together by means of a horizontal fold thereby making it possible to fold the panels together for packing and shipping. The folds in the flexure sections of adjacent panels are designed to nest together when the two panels are folded. Special nailing sections are shown which compensate for thermal expansion and contraction.
    Type: Grant
    Filed: September 20, 1990
    Date of Patent: May 26, 1992
    Assignee: Roof-Flex
    Inventor: Earl Blair
  • Patent number: 5010700
    Abstract: A roof jack or vent seal which is unitarily vacuum formed of polypropylene synthetic rubber polymer and a U.V. stabilized pigment and which has a planar roof covering with a central upstanding frusto-conical section including stepped graduated portions, with the region between each graduated portion capable of flexing to accommodate differences in the roof pitch.
    Type: Grant
    Filed: July 23, 1990
    Date of Patent: April 30, 1991
    Inventor: Earl Blair