公开(公告)号：US3900795A

公开(公告)日：1975-08-19

申请号：US38852073

申请日：1973-08-15

Applicant: HONEYWELL INC

Inventor： LARSEN LARRY D ,  SCHUCK LEE ,  PEKAREK JOSEPH C ,  MOTT RICHARD C

IPC: G08B17/00 ,  G01N27/64 ,  G08B17/10 ,  G08B17/113 ,  G01N23/12 ,  B25B27/00

CPC classification number: G08B17/113 ,  G08B29/145

Abstract: In the present invention a ceiling mounted smoke detector assembly has a permanently mounted ceiling fixture portion and a detachably mounted smoke detector head adapted for mounting to the fixture portion. To provide for ease of installation, removal, and/or testing of the smoke detector head or of testing the entire assembly there is an installation and testing tool which mechanically and electrically interlocks with the smoke detector head.