Friction Patents (Class 248/337)
  • Patent number: 9795220
    Abstract: A quickly released and fastened adjustment mechanism including a gasket, a first ratchet, a second ratchet, a T-shaped sleeve and a fastener is installed between a sliding member and a fixing member. The first and second ratchets are arranged with annular teeth respectively while the two annular teeth are engaged. The T-shaped sleeve is mounted in the first and second ratchets and against the gasket. The fastener is passed through the T-shaped sleeve, the gasket and the sliding member to be secured on the fixing member. Thus the two corresponding annular teeth are engaged firmly. The height difference between low-level and high-level engagement of the two annular teeth is Hf. The sleeved height of the T-shaped sleeve is D1. The total height of the first and second ratchets in the low-level engagement is D2. D1>D2. D1?D2=G>0 and Hf>G>0.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: October 24, 2017
    Inventor: Te-Chun Chen
  • Patent number: 8422716
    Abstract: A telescoping boom pole for an electrical conductor is disclosed. The boom pole includes at least a top cylindrical conduit slidably assembled within a second cylindrical conduit. A top clamping means is included for selectively clamping the top conduit to the second conduit. The top clamping means includes an annular cylindrical collar having a threaded portion proximate a bottom edge on an inside surface thereof, and a collet restraining means proximate a top edge thereof. An annular, compressible collet is resiliently captured by the collet restraining means of the collar at a cooperative restraining means of an outside surface of the collet. The collet further includes an inclined lower portion on an outside surface thereof. The top clamping means further includes an annular sleeve fixed to a top end of the second conduit, and has an outside surface that includes a threaded portion that cooperates with the threaded portion of the collar.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: April 16, 2013
    Inventor: Donald E. Wetzel
  • Patent number: 7731143
    Abstract: A mounting system for adjustably mounting a flat panel display to a support medium. The system consists of a frame assembly that can be attached to a support medium. One or more adjustable mounts are attached to the frame assembly, and a flat panel display is attached to the adjustable mounts. Each adjustable mount can extend from a retracted position to an extended position in order to tilt the flat panel display and provide an optimum viewing angle to a viewer. As the adjustable mount extends, the center of gravity of the attached flat panel display moves in approximately a horizontal plane, enabling the display to be tilted by a user with a minimum amount of applied force. In some embodiments, a friction assembly is provided to maintain the selected position of each adjustable mount.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: June 8, 2010
    Assignee: Omnimount Systems, Inc.
    Inventors: Tom Muday, Zachary Eyman, Brett Stenhouse
  • Patent number: 5582378
    Abstract: A structure composed of articulated rods extending between a fixed attachment point and a free attachment point for the object to be supported. This structure is extensible in the direction of the straight line joining the fixed attachment point and the free attachment point, and is symmetrical about this line and more or less rigid in directions perpendicular to the direction of extension. The spool rotates about a pin inserted in said structure at a point close to the free attachment point. A cord is connected to a spring for winding up the cord. The cord has one end fixed to said structure close to said line at a point between the fixed attachment point and the spool. The other end of the cord is fixed to the circumference of the spool.
    Type: Grant
    Filed: October 4, 1994
    Date of Patent: December 10, 1996
    Assignee: Industria Fototecnica Firenze S.r.l.
    Inventor: Giuliano Fusi
  • Patent number: 4536031
    Abstract: A back support control mechanism for a chair or the like is provided for a back support movable toward and away form a seat. Adjustable positioning of the back support with respect to the seat in an infinite number of positions in a range of movement of the back support is provided through use of a channel member fixed with respect to the seat and a pressure pad positioned within the channel member and fixed with respect to the back support. The pressure pad slides within the channel member, and a lever is coupled to the pressure pad through a spring plate.
    Type: Grant
    Filed: June 10, 1983
    Date of Patent: August 20, 1985
    Assignee: Knoll International, Inc.
    Inventor: Thomas L. Latone
  • Patent number: 4445660
    Abstract: An adjustable suspension support having a suspensible vertical cylinder, a coaxial shaft in the cylinder, a brake device on the upper end of the shaft, a grip device carried by the lower end of the shaft with an associated lever, a spacer tube between the brake and the grip, and at least one hanger on the support for holding an object. The brake means has a collar carrying spherical bearings and a plug on the end of the shaft retaining the bearings in the cage. The device is rotatable about its vertical axis and it is adjustable vertically by actuating the lever and exerting an upward force on the grip to release the brake.
    Type: Grant
    Filed: April 9, 1982
    Date of Patent: May 1, 1984
    Inventor: Alexander D. Karapita
  • Patent number: 4431108
    Abstract: A vertical, retracting, tubular clothes hanger support having an outer member secured to an overhead support with an inner member slideably mounted within the outer member. A spring retracts the inner member into the outer member for convenient storage. The outer member at its lower end carries an inward tapered shoulder and the inner member carries at its upper end a complementary outward tapered shoulder. The shoulders provide sliding bearings as the members are telescoped. With the inner member extended fully into its downward position, the tapered shoulders engage into a locked position and secure the members in the extended position. The lower portion of the inner member carries a horizontal cross support that is adapted to receive clothing hangers. Preferably, this support is releasably mounted to the inner member for convenient removal whereby several mounted clothes hangers can be removed in unison by the user.
    Type: Grant
    Filed: October 31, 1980
    Date of Patent: February 14, 1984
    Inventor: Ellis M. Lee
  • Patent number: 4374581
    Abstract: A vertically adjustable suspension support unit having a vertical cylinder and a brake element slidable in the cylinder. The brake element comprises a pair of collars located coaxially in the cylinder with opposed bevels providing a raceway for spherical bearings, the angle of each bevel being between and, preferably, with respect to a transverse plane of the cylinder normal to its axis. The collars are connected to a grip and are movable towards and away from one another to clamp or release the brake element in the cylinder, the brake element being axially rotatable while clamped.
    Type: Grant
    Filed: July 9, 1979
    Date of Patent: February 22, 1983
    Inventor: Alexander D. Karapita
  • Patent number: 4174900
    Abstract: A tripod for a camera having legs with telescoping portions, each of which is U-shaped in cross-section; snap levers are mounted on the interior of the legs to hold the legs in a fixed extended position and to permit the legs to be collapsed without interfering in the telescoping action so that the inner leg portions can be fully retracted.
    Type: Grant
    Filed: March 31, 1978
    Date of Patent: November 20, 1979
    Assignee: Mitsuwa Shashin Kogyo Kabushiki Kaisha
    Inventor: Tatsuo Ina
  • Patent number: 4170307
    Abstract: A service module for bicycles comprising a housing having outer plastic panels to carry tools. In one form of the invention the housing is mounted for free rotation on the lower end of a telescopic support, and the support is spring biased to a retracted position so that the unit can be stored in an upper position. In use, the housing is pulled down and locked in a lower position. In a second form of the invention, the housing is adjustably mounted on the upper end of a supporting column and the housing can be rotated with respect to the column to provide access to the tools.
    Type: Grant
    Filed: November 4, 1977
    Date of Patent: October 9, 1979
    Inventor: Edward C. Maeder
  • Patent number: 4087085
    Abstract: An impact deflection absorber and stabilizer for providing an interface between two items, surfaces, etc. permitting regulated and controlled travel (energy absorption) along its longitudinal axis and constraining motion in all other directions. An energy absorbing spring is positioned within a housing comprised of two cylindrical mating surfaces forming a friction surface therebetween. A collar clamp joins the two cylinders together and adjustably controls the amount of friction between the two surfaces thereby providing control of the energy absorbing capability of the device. The clamp also has the effect of strengthening the device along non-longitudinal axes, such that all axes have a resonant or fundamental frequency higher than that along the longitudinal or primary axis whereby the device will yield longitudinally regardless of what direction the forces are emanating from.
    Type: Grant
    Filed: August 23, 1976
    Date of Patent: May 2, 1978
    Inventor: Henry K. Hauser
  • Patent number: 4073456
    Abstract: A manual suspension support, in which a pair of tubes are telescoped using a vacuum source. A slidable piston in a cylinder is selectively brakable by manipulation of a handle which also carries a valve operable to vary the vacuum in the cylinder.
    Type: Grant
    Filed: July 14, 1976
    Date of Patent: February 14, 1978
    Assignee: Alex D. Karapita
    Inventors: Alexander D. Karapita, James D. Orr
  • Patent number: 4029279
    Abstract: A holding device for use in the tripod comprising at least two rods arranged in telescopic manner and provided with a through-hole at the lower end thereof, fastening levers arranged to be pressed against a face of each of the inner rods through the through-hole.
    Type: Grant
    Filed: June 21, 1976
    Date of Patent: June 14, 1977
    Inventor: Koma Nakatani