Patents by Inventor William W. Lindquist

William W. Lindquist 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).

  • Adjustable flanged fitting for roof openings
    Patent number: 4433860
    Abstract: A tubular fitting with an annular flange inwardly of its ends has adjustable clamping devices spaced with respect to the flange and enabling the fitting to be secured in an opening in a roof or the like and about a structural member or a pipe extending therethrough so as to form a weather tight seal thereabout. The fitting is preferably formed in two half sections to facilitate installation.
    Type: Grant
    Filed: October 20, 1980
    Date of Patent: February 28, 1984
    Inventor: William W. Lindquist
  • Extension boom for tractors having back hoe attachments
    Patent number: 4314622
    Abstract: An extension boom for use with a tractor mounted back hoe assembly comprises a main body section pivotally connected at one end to said back hoe assembly in place of the usual back hoe bucket. The main body section is formed of a pair of spaced elongated channel members with a fixed outwardly extending tubular member therebetween. A secondary tubular member is positioned partially within said tubular member and is telescopically extensible therefrom. The extension is adapted to support an aerial platform for a workman.
    Type: Grant
    Filed: March 26, 1980
    Date of Patent: February 9, 1982
    Inventor: William W. Lindquist
  • Flanged fittings for floors or roofs
    Patent number: 4306738
    Abstract: A flanged fitting comprises a flanged tubular member for positioning in an opening in a floor or roof to form a tubular conduit therethrough. The flange on the fitting may comprise a closet flange, a floor drain flange, or a flat roof flange. Additionally, the flange may be provided with an upstanding tubular member to which a secondary tubular conductor may be attached in the nature of a vent. A sleeve is engaged about the tubular member such as by a clamping member thereon with the upper portion of the sleeve being of a considerably larger diameter and provided with a plurality of circumferentially spaced finger-like sections which are frangible. The flanged fitting may thus be clampingly secured in an opening in a floor or a roof in a desirable location in an opening therein to serve an intended purpose.
    Type: Grant
    Filed: February 4, 1980
    Date of Patent: December 22, 1981
    Inventor: William W. Lindquist
  • Floor or roof drain fitting
    Patent number: 4243251
    Abstract: A floor or roof drain fitting includes a flanged tubular member for positioning in an opening to form a drain structure. A sleeve is engaged about the tubular member such as by threaded engagement therewith with the upper portion of the sleeve being of considerably larger diameter and provided with a plurality of circumferentially spaced finger-like sections which are frangible. Tubular members may thus be clampingly secured in an opening in a floor or roof to form a water tight drain fitting.
    Type: Grant
    Filed: September 28, 1979
    Date of Patent: January 6, 1981
    Inventor: William W. Lindquist