公开(公告)号：US3665223A

公开(公告)日：1972-05-23

申请号：US3665223D

申请日：1969-11-28

Applicant: ARMOR ELEVATOR CO INC

Inventor： STICHWEH JAMES H ,  HORNUNG STEPHEN A ,  DUCKWALL PAUL

IPC: B66B1/46 ,  H03K5/13 ,  H03K17/292 ,  H03K17/28

CPC classification number: H03K5/13 ,  B66B1/46 ,  H03K17/292

Abstract: A timer circuit produces an output signal at a predetermined time following the application of an input signal. The input signal actuates a timing circuit which, at a specified time thereafter, causes a switching device to be actuated, which in turn produces the output signal. One or more of a plurality of control means are selectively insertable into the timing circuit, thereby to select one of a plurality of available time intervals between the input and output signals.