Switch operated actuating device

  • US 5,812,052 A
  • Filed: 10/29/1997
  • Issued: 09/22/1998
  • Est. Priority Date: 10/29/1997
  • Status: Expired due to Term
First Claim
Patent Images

1. An actuating device for operating a safety unit which is mounted on a vehicle or the like and moved between a first retracted position and a second extended position, said actuating device including:

  • (a) a motor unit having a rotating output shaft;

    (b) a movable support for supporting said safety unit and being movable between said retracted and extended positions;

    (c) a switch housing formed with an opening therein, and including;

    (i) means located on one side of said opening for generating a beam that passes across said opening;

    (ii) sensor means located at the other side of said housing and located in the path of said beam for generating a first signal when said beam is sensed and for generating a second signal when said beam is not sensed; and

    (iii) a plate attached to said drive shaft for rotation therewith, said plate being disposed within said opening and being formed with first portions that block the passage of said beam across said opening at predetermined positions of said plate during said rotation thereof, and being formed with second portions for permitting said beam to pass across said opening at other predetermined positions of said plate during said rotation thereof; and

    (d) control means for operating said motor unit in response to one of said signals to move said support between said retracted and extended positions, and for operating said motor unit in response to the other of said signals for stopping movement of said support.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×