Patents Assigned to Lars Helmersson
  • Conveyor with twin belt synchronizing mechanism
    Patent number: 4582192
    Abstract: A conveyor for building and other material transport has a pair of parallel spaced apart belts with upstanding load engaging pushers. A belt synchronizing mechanism is provided to maintain the transverse alignment of the pushers. Reed switches sense magnetic position indicators on the belts. A control circuit including the reed switches selectively moves spacer arms into and out of engagement with the belt drive pulleys to vary the circumference thereof and vary the speed of travel of each of the belts.
    Type: Grant
    Filed: October 26, 1984
    Date of Patent: April 15, 1986
    Assignee: Lars Helmersson
    Inventor: Hans Y. V. Rojlar