Work Or Object Holding Type Patents (Class 335/285)
  • Patent number: 4066177
    Abstract: Locating a tacky polymer-coated steel sheet on a magnetic rubber-covered glass support by sliding the support out from under a shield and carrying the steel sheet with the magnetic support gradually to place the sheet on the support.
    Type: Grant
    Filed: August 23, 1976
    Date of Patent: January 3, 1978
    Assignee: Imperial Metal Industries (Kynoch) Limited
    Inventors: John Arthur Frederick Gidley, Barry Frederick Irving, Barry Keith Johnson
  • Patent number: 4043134
    Abstract: A submergible chamber is provided with flanges at the outward ends of chamber guide arms, wherein each flange engages a stanchion. In one embodiment the flanges are selectively electromagnetic with the stanchions, and with sufficient force, the flanges are held to the stanchions thereby positioning the chamber at a specific depth. In another embodiment, the flange is adapted to pivotally grip the stanchion, and further each stanchion is provided with a vertical gear rack engaging the driven gear of each respective work arm so as to accurately position the chamber at a specific depth whereat the clamp holds the chamber at that depth.
    Type: Grant
    Filed: May 13, 1976
    Date of Patent: August 23, 1977
    Inventor: Burton Hoster Mason
  • Patent number: 4040635
    Abstract: A pickup cartridge for a video disc player encloses a stylus arm unit comprising a stylus arm carrying a stylus at one end and a magnetizable connector plate secured at its other end. A permanent magnet is centrally located in a recess provided in a magnetizable support member which is mounted in a carriage of the player. When the connector plate is engaged with the support member, the separation between the connector plate and the permanent magnet is greater than the separation between the permanent magnet and the walls defining the recess.
    Type: Grant
    Filed: March 16, 1976
    Date of Patent: August 9, 1977
    Assignee: RCA Corporation
    Inventor: Marvin Allan Leedom
  • Patent number: 4014289
    Abstract: A web treatment element in the form of a roller is attracted to one side of a web by magnetic attraction from a magnetic element positioned on the opposite side of the web. The magnetic element includes a plurality of electromagnets and a switch connected thereto to reverse the polarity of at least a portion of the electromagnets to selectively alter the polarity alignment of the electromagnets.
    Type: Grant
    Filed: September 12, 1975
    Date of Patent: March 29, 1977
    Inventor: Johannes Zimmer
  • Patent number: 3949629
    Abstract: A novel method cutting textile material into garment-pattern shaped pieces using thin paper sheet pattern pieces utilizing magnetic objects to position and clamp the pattern pices to the textile. Further, a method of storing the cut textile is disclosed.
    Type: Grant
    Filed: January 24, 1975
    Date of Patent: April 13, 1976
    Inventor: Betty Johnson
  • Patent number: 3942147
    Abstract: A display device comprising a display board having an outwardly facing surface, said board being of a ferromagnetic material, at least one substrate strip, said substrate strip having permanent magnetic properties comprising at least one pair of parallel spaced apart north and south magnetic poles extending in one direction thereof, at least one display unit having permanent magnetic properties comprising at least one pair of spaced apart north and south magnetic poles, said poles of said display unit being spaced apart by a distance equal to a multiple of the spacing of the north and south magnetic poles of the magnetic substrate strip. The device permits the display of indicia or characters without employing aligning means and also permits the placement of information in any desired direction.
    Type: Grant
    Filed: November 1, 1974
    Date of Patent: March 2, 1976
    Assignee: Visual Planning Corporation
    Inventor: Joseph Pollack Josephson
  • Patent number: 3939448
    Abstract: Mechanically controllable magnet made of a magnetostrictive, circularly magnetically anisotropic, circularly magnetized rod. There is no apparent magnetism externally. When rod is twisted, circular anisotropy becomes helical and circular magnetization also becomes helical to produce an axial field component and hence externally apparent magnetism. When rod untwists, it restores itself to its apparently non-magnetic condition.
    Type: Grant
    Filed: July 12, 1974
    Date of Patent: February 17, 1976
    Inventor: Ivan J. Garshelis