Patents by Inventor Larry E. Johnson

Larry E. Johnson 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: 5817390
    Abstract: Pile weatherstripping having rows of pile and longitudinal fins both within and external to the rows of pile. The heights of the fins with respect to the height of the pile may be independently varied and controlled. A travelling endless band receives a pair of first webs providing internal fins on opposite sides of the band. The first webs are indexed to the edges of the band, which defines the heights of the fins. Each web may be independently indexed. Alignment of the webs on the band is provided either by an aligning fixture or by coining the webs to provide lines of indentations which index the webs at the edges of the band. The yarn which forms the pile is wound around the first webs. Second webs providing the external fins are indexed through the yarn and first webs to the edges of the band and are also aligned by a second aligning fixture or by coining. Backing strips are attached, as by ultrasonic welding, along the edges of the band. Then the yarn is slit without cutting into the webs.
    Type: Grant
    Filed: January 6, 1997
    Date of Patent: October 6, 1998
    Assignee: Ultrafab, Inc.
    Inventor: Larry E. Johnson
  • Patent number: 5807451
    Abstract: Pile weatherstripping having rows of pile and longitudinal fins both within and external to the rows of pile. The heights of the fins with respect to the height of the pile may be independently varied and controlled. A travelling endless band receives a pair of first webs providing internal fins on opposite sides of the band. The first webs are indexed to the edges of the band, which defines the heights of the fins. Each web may be independently indexed. Alignment of the webs on the band is provided either by an aligning fixture or by coining the webs to provide lines of indentations which index the webs at the edges of the band. The yarn which forms the pile is wound around the first webs. Second webs providing the external fins are indexed through the yarn and first webs to the edges of the band and are also aligned by a second aligning fixture or by coining. Backing strips are attached, as by ultrasonic welding, along the edges of the band. Then the yarn is slit without cutting into the webs.
    Type: Grant
    Filed: November 19, 1996
    Date of Patent: September 15, 1998
    Assignee: Ultrafab, Inc.
    Inventor: Larry E. Johnson
  • Patent number: 5438802
    Abstract: A weatherstrip assembly has a backing strip 30 with one or more local interference members in the form such as of nubbins 40A or alternative nubbins, which frictionally engage a channel or T-slot holding the backing member 30 and thereby restrict movement of the backing member 30 within the channel or T-slot, and especially movement of the weatherstrip along (longitudinally of) the length of the channel. Lateral (side to side) movement of weatherstrip is also restricted.
    Type: Grant
    Filed: April 22, 1993
    Date of Patent: August 8, 1995
    Assignee: Ultrafab Inc.
    Inventor: Larry E. Johnson
  • Patent number: 5338382
    Abstract: Pile weatherstripping having rows of pile sandwiching a fin is fabricated so as to precisely locate the height of the fin with respect to the height of the pile. A travelling endless band receives webs providing the fins on opposite sides thereof with the edge of each web, which defines the height of the fin, precisely positioned on a side of the band and the other edge overhanging the edges of the band. Alignment of the webs on the band is provided either by an aligning fixture or by coining the webs to provide lines of indentations which index the webs at the edges of the band. The yarn which forms the pile is wound around the webs and the band and serves to wrap the overhanging portions of the webs around the band, or a guide may be used to facilitate wrapping of the webs around the band, prior to winding of the yarn. Backing strips are attached, as by ultrasonic welding, along the edges of the band. Then the yarn is slit without cutting into the webs.
    Type: Grant
    Filed: August 10, 1992
    Date of Patent: August 16, 1994
    Assignee: Ultrafab Inc.
    Inventors: Larry E. Johnson, Peter Galens
  • Patent number: 5287656
    Abstract: A weatherstrip assembly 8 for a window 6 includes a weatherstrip 20 with a backing strip 20 with pile fibers 22. The weatherstrip 20 is retained in a channel 10 of window 6. The channel 10 has a flexible wall 14 that is resilient and temporarily deformable to expand the cross-sectional area of channel 10 while the weatherstrip 20 is inserted into channel 10.
    Type: Grant
    Filed: April 22, 1993
    Date of Patent: February 22, 1994
    Assignee: Ultrafab Inc.
    Inventor: Larry E. Johnson
  • Patent number: 4520618
    Abstract: The present invention is an improved cutter guard having means for positioning the guard in either a first position or a second position upon a respective cutter bar assembly. The positioning means includes a pair of partially overlapping openings aligned along an axis. The overlapping areas of the pair of openings define a reduced passageway which prohibits a bolt inserted into one of the openings from moving across the overlapping areas into the other opening.
    Type: Grant
    Filed: October 23, 1984
    Date of Patent: June 4, 1985
    Assignee: Herschel Corporation
    Inventors: Wayne E. Sorensen, Larry E. Johnson