EP 0405473 A2 19910102 - Low profile detector with multi-sided source.
Title (en)
Low profile detector with multi-sided source.
Title (de)
Niedrigprofil-Detektor mit Multiseitenquelle.
Title (fr)
Détecteur à bas profil avec source multiface.
Publication
Application
Priority
- US 37315689 A 19890628
- US 53507190 A 19900612
Abstract (en)
A low profile ionization type smoke sensor (50) is formed with a cylindrical housing (62) having a diameter on the order of 50.8 mm with a height on the order of 25.4 mm or less. A common electrode (66) is centrally located within the housing (62). A single sided ion source (74) is carried on the common electrode (66) and centrally located thereon. The ion source (74) extends into a first or reference region (68b) and into a second or active region (68a). First and second target electrodes (70, 72) are provided , attached to the housing (66), in each region (68a, 68b). The ion source (74) emits particles on paths that are substantially parallel to the common electrode (66). A 25.4 mm path, substantially parallel to the common electrode (66), is provided between the ion source (74) and each target electrode (70, 72).
IPC 1-7
IPC 8 full level
G08B 17/11 (2006.01); G08B 17/113 (2006.01)
CPC (source: EP)
G08B 17/11 (2013.01); G08B 17/113 (2013.01)
Designated contracting state (EPC)
BE DE FR GB IT
DOCDB simple family (publication)
DOCDB simple family (application)
EP 90112170 A 19900626