The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 23, 2019
Filed:
Oct. 27, 2017
Hochiki Corporation, Tokyo, JP;
David Brown, Kent, GB;
Manabu Dohi, Tokyo, JP;
Kiyoaki Koyama, Tokyo, JP;
Hiroyuki Tatsuno, Tokyo, JP;
Hiroyuki Kase, Tokyo, JP;
HOCHIKI CORPORATION, Tokyo, JP;
Abstract
A composite fire detector () which senses a heat temperature, smoke concentration, and gas concentration due to fire is connected to a transmission path () drawn from a fire receiver (). When a fire test operation is sensed by the fire receiver, a test mode is set to the fire detector. The fire detector performs display control over alarm indicating lights in a mutually varied manner corresponding to each alarm test when a test jig is used to conduct an alarm test by sensing of a heat temperature, an alarm test by sensing of a smoke concentration, and an alarm test by sensing of a gas concentration in a state where the test mode is set. For example, the fire detector repeats one-time blinking of the alarm indicating lights for heat sensing, two-time blinking for smoke sensing, and three-time blinking for gas sensing at intervals of a predetermined nonoperating period.