Patents Assigned to M.R. Industries
  • Patent number: 5839478
    Abstract: This composite pipe (20) is of the type including an inner tube (2) made of a first thermoplastic material (A), a reinforcement (21) including a metal tape (3) bonded to the inner tube by a first adhesive (61) compatible with the first thermoplastic material, an outer sheath (4) made of a second thermoplastic material (B), bonded to the reinforcement (21) by a second adhesive (62) compatible with the second thermoplastic material. According to the invention the two materials A and B have different chemical natures and, in the connecting region 22 between the strips opposite one another 61a, 62a, respectively, of the first and of the second adhesive, a means of bonding joins these two bands coherently. In an embodiment this means of bonding consists of adhesives which are different but compatible and co-crosslinked with each other.
    Type: Grant
    Filed: September 23, 1996
    Date of Patent: November 24, 1998
    Assignee: M.R. Industries
    Inventors: Thierry Colcombet, Alain Grandouiller
  • Patent number: 4776582
    Abstract: An exercise treadmill in which the slope of an endless belt is varied by changing the height of one end of a base frame by means of a swing frame having a vertically adjustable pivot axis. The swing frame is movable from an active treadmill supporting position to an inactive condition where the pivot axis can be changed.
    Type: Grant
    Filed: October 9, 1986
    Date of Patent: October 11, 1988
    Assignee: M & R Industries, Inc.
    Inventor: Jo D. Ramhorst
  • Patent number: 4756523
    Abstract: An exercise rowing machine of the type having a seat carriage movable along a track unit as the exerciser manipulates pivoted rowing arms in performing a standard rowing exercise is provided with a brake assembly on the seat carriage having a brake pad which can be selectively moved into and out of frictional braking engagement with the track unit to lock the seat carriage so that alternative exercises can be performed on the machine.
    Type: Grant
    Filed: July 3, 1986
    Date of Patent: July 12, 1988
    Assignee: M & R Industries, Inc.
    Inventor: Robert A. Rasmussen
  • Patent number: 4750735
    Abstract: An exercise rowing machine has a frame and a swing arm pivotally connected thereto which is manually pushed and pulled in opposition to an adjustable hydraulic load-resisting mechanism pivotally connected between the frame and the arm. This mechanism has a pair of spring-loaded, independently adjustable flow control valves at opposite ends for controlling flow to and from opposite ends of a cylinder which a double-acting piston reciprocates responsive to movement of the swing arm. The range of adjustment of the spring pressure on the valves is preset.
    Type: Grant
    Filed: October 9, 1986
    Date of Patent: June 14, 1988
    Assignee: M & R Industries, Inc.
    Inventors: David J. Furgerson, Allan F. Strickland
  • Patent number: 4736944
    Abstract: An exercise rowing machine has a frame structure with a center track rail, front and rear cross-members supporting the track rail, and a U-frame connected to the track rail and the front cross-member. The front cross-member is a one-piece molded part providing a seat for the track rail, saddles for a pivot shaft for foot plates, clevises for pivotal connection to hydraulic cylinder units which are pivotally connected to rowing arms in turn pivotally connected to the U-frame, sockets for receiving the U-frame, and supports for front transport wheels.
    Type: Grant
    Filed: October 9, 1986
    Date of Patent: April 12, 1988
    Assignee: M & R Industries, Inc.
    Inventors: Jeffrey B. Johnson, Allan F. Strickland, Daniel R. Moon