公开(公告)号：US4102382A

公开(公告)日：1978-07-25

申请号：US794192

申请日：1977-05-05

Applicant: Edwin G. Vesbach

Inventor： Edwin G. Vesbach

IPC: E05F1/02 ,  E05F15/00 ,  E05F15/08 ,  E05F15/16

CPC classification number: E05F15/59 ,  E05F1/02 ,  E05F15/47 ,  E05F15/668 ,  E05F15/686 ,  E05Y2201/41 ,  E05Y2201/50 ,  E05Y2201/67 ,  E05Y2800/252 ,  E05Y2900/106

Abstract: An operator for an overhead door comprises a fluid actuated device including a cylinder and a cooperating piston. The piston rod carries a pair of cable sheaves. Another pair of sheaves are rotatable on a fixed mounting. A cable is wound around pulleys in corresponding pairs. Each cable has one end anchored and another end fastened to the door so when the fluid actuated devices spread the pair of sheaves, the door lifts. Pressurized fluid is relieved from the cylinder to let the door close under its own weight. Electric circuits for actuating the hydraulic circuit are shown.

Abstract translation: 顶棚门的操作者包括流体致动装置，其包括气缸和配合活塞。 活塞杆带有一对电缆绳轮。 另一对滑轮可在固定的安装件上旋转。 电缆以相应的对缠绕在滑轮周围。 每个电缆具有一端锚定，另一端紧固到门上，因此当流体致动装置传播一对滑轮时，门升降机。 加压流体从气缸释放，使门在自重的情况下关闭。 示出了用于启动液压回路的电路。