Patents Assigned to Paul Guilden
  • Film advancing mechanism
    Patent number: 4063671
    Abstract: The sprocket assembly for periodic advancement of film in a film projector is supported axially between rotated members and is corotative with the members upon increase in axial force therebetween. One of the members is axially restrained and the second member supported for minute axial movement. Force giving rise to the corotation of the members and sprocket assembly is applied to the second member by selective movement of a magnetically attractable element into a magnetic field generated continuously during projector use.
    Type: Grant
    Filed: January 7, 1977
    Date of Patent: December 20, 1977
    Assignee: Paul Guilden
    Inventor: Miklos Von Kemenczky
  • Film projector
    Patent number: 3954214
    Abstract: The sprocket assembly for periodic advancement of film in a film projector is supported axially between rotated members and is corotative with the members upon increase in axial force therebetween. One of the members is axially restrained and the second member supported for minute axial movement. Force giving rise to the corotation of the members and sprocket assembly is applied to the second member by selective energization of an electromagnet.
    Type: Grant
    Filed: April 25, 1975
    Date of Patent: May 4, 1976
    Assignee: Paul Guilden
    Inventor: Miklos Von Kemenczky
  • Adjustable interval timer
    Patent number: 3938315
    Abstract: Timing apparatus comprising a housing having a fluid-containing conduit and a body movable in the conduit under the influence of gravity includes a valve for controlling circulation of fluid in the conduit and thereby controlling the time elapsed during movement of the body between preselected locations. The housing supports a magnet for sliding movement when the body descends to its lowermost location and a member responsive to such magnet movement initiates audible output indication.
    Type: Grant
    Filed: June 20, 1974
    Date of Patent: February 17, 1976
    Assignee: Paul Guilden
    Inventor: Miklos Von Kemenczky