Patents by Inventor Steven E. Knapp

Steven E. Knapp 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: 7517378
    Abstract: The invention provides an air filter with an integral rigid edge. The filter uses a pre-cut sheet of non-woven synthetic filter material. The sheet has a generally rectangular central portion and four outwardly extending side portions. Each side portion is compressed to make it thinner, denser and more rigid than the central portion. The side portions are rolled or folded upon themselves toward the central portion to form a rigid edge around at least a part of the central portion. A method for making the air filter is also provided.
    Type: Grant
    Filed: January 9, 2007
    Date of Patent: April 14, 2009
    Inventor: Steven E. Knapp
  • Publication number: 20080163595
    Abstract: The invention provides an air filter with an integral rigid edge. The filter uses a pre-cut sheet of non-woven synthetic filter material. The sheet has a generally rectangular central portion and four outwardly extending side portions. Each side portion is compressed to make it thinner, denser and more rigid than the central portion. The side portions are rolled or folded upon themselves toward the central portion to form a rigid edge around at least a part of the central portion. A method for making the air filter is also provided.
    Type: Application
    Filed: January 9, 2007
    Publication date: July 10, 2008
    Inventor: Steven E. Knapp
  • Patent number: 5356694
    Abstract: An extruded connector strip is described and more particularly, but not exclusively, for use as a weatherstrip connector. The connector strip has an elongated attachment body which has a flat rear attachment wall from which a pair of spaced-apart parallel flexible spacer ribs extend outwardly and sloped towards opposed elongated end edges thereof. An adhesive transfer tape is securable to at least one or more flat portions of the rear attachment wall to secure the connector strip against an object. The flexible spacer ribs permit the attachment body to be located over a connecting surface of an object to which it is intended to be secured while preventing the outer adhesive surface of the transfer tape from contacting the connecting surface until pressure is applied to the attachment body which causes the spacer ribs to flex and the outer adhesive surface of the tape to contact the connecting surface to adhere thereto.
    Type: Grant
    Filed: March 18, 1993
    Date of Patent: October 18, 1994
    Assignee: RCR International, Inc.
    Inventor: Steven E. Knapp
  • Patent number: 5168669
    Abstract: An adjustable lower edge seal assembly for an exterior door whereby to seal the bottom edge of the door with the floor below the door frame or a door threshold. The assembly comprises an elongated sealing strip member having a seal carrying base and a transverse edge attachment flange which is secured to an outer face of a door adjacent the lower edge thereof. A flexible seal projects outwardly of the base. The flange is also provided with holes to receive fasteners to secure it to the lower edge wall of the door. The base is also provided with an adjustable connector to receive a connector flange of a stabilizing connector strip member therein. The stabilizing connector strip member has an abutment wall to abut an opposed face of the door adjacent an opposed lower edge of the door.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: December 8, 1992
    Assignee: RCR International Inc.
    Inventor: Steven E. Knapp