Patents Assigned to H-P Products, Inc.
  • Coupler for low pressure piping system
    Patent number: 6843516
    Abstract: A coupler for a low pressure piping system has a hollow metal tube terminating in a pair of end portions defining open ends for slidably receiving and joining together sections of other metal tubes in a substantially air tight relationship. Slots are formed in at least one of the end portions to aid in the crimping of the hollow metal tube by an annular clamp. A radial flange is formed adjacent the end portion and receives an annular seal therein. A stop for limiting the insertion of a tube section into the end of the hollow metal tube is formed on the inside of the coupler adjacent the radial flange opposite the slots. The annular clamp encircles the slots and is tightened to clamp the end portions to form metal to metal contact between the metal tubes and to form a seal between the annular seal and both metal tubes.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: January 18, 2005
    Assignee: H-P Products, Inc.
    Inventors: John P. Bishop, Gregory A. Calderone, Leland J. Dick, James F. Smith
  • Carrier bag for pneumatic delivery system
    Patent number: 6565290
    Abstract: A carrier for a pneumatic delivery system includes a bag-shaped body that is fabricated from a flexible material. The carrier includes a sealing plate and a weight disposed at the front of the body and an alignment ring disposed toward the rear of the body. The carrier is adapter to be moved through the ducts of a pneumatic delivery system without becoming stuck in the system.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: May 20, 2003
    Assignee: H-P Products, Inc.
    Inventor: James F. Smith
  • Universal adapter sleeve for central vacuum cleaning systems
    Patent number: 4997209
    Abstract: A one-piece hollow sleeve molded of an elastomeric vinyl has a cylindrical rear end portion for attachment to a flexible hose of central vacuum cleaning system and has a front end portion which is slidably frictionally engageable within the inlet opening of variety of inlet valves. The front end portion is formed with a series of specifically sized and located tapered zones of varying lengths and angles of taper which enable the sleeve to be used with a variety of inlet valves having various internal diameters and lengths. A metal band is seated in a recess formed in the front end portion between certain of the tapered zones and has a length and location enabling it to contact the various pairs of contact buttons of the various types and styles of inlet valves. This universal sleeve eliminates a different hose attachment sleeve being required for each of the most common inlet valves of the most popular central vacuum cleaning systems.
    Type: Grant
    Filed: October 26, 1989
    Date of Patent: March 5, 1991
    Assignee: H-P Products, Inc.
    Inventors: Robert F. McGrath, Donald V. Bailey
  • Hand wand for vacuum cleaner
    Patent number: D480848
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: October 14, 2003
    Assignee: H-P Products, Inc.
    Inventors: James F. Smith, Wesley A. Schroeder
  • Acoustic foam sound reducer for vacuum power unit
    Patent number: D494331
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: August 10, 2004
    Assignee: H-P Products, Inc.
    Inventors: Darrell V. Nieschwitz, Andrew L. Gabric