Patent · US Active

Fire detection device

US11614396B2 · kind B2 · utility

1Cited by

2References

7Claims

0Family size

Assignee

HOCHIKI Corporation · JP

Inventors

Hideki Takano · Kawasaki, JP
Yasuharu Fujiwara · Tokyo, JP
Isao Saeki · Ichikawa, JP

Key dates

Filing date	Oct 23, 2020
Grant date	Mar 28, 2023
Priority date	—
Expiry date	May 15, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG08B17/107
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A fire detection apparatus 1A includes a detector cover 70A for inhibiting ambient light from entering a detection space 60A, an inner cover 30A that accommodates the detection space 60A and the detector cover 70A, an outer cover 20A that accommodates the inner cover 30A, a first opening 30aA provided in a side portion on an opposite side from a side portion on an installation surface side among side portions of the inner cover 30A, a second opening provided in a side portion on an opposite side from a side portion on an installation surface among side portions of the detector cover 70A, and a flat plate-shaped insect screen 50A provided on the detector cover 70A and configured to substantially cover the entire second opening.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.