IP Library › Granted Patent US 12,430,997
Granted Patent B2
US 12,430,997 · App. 18/118,811 · Granted Sep 30, 2025

Disaster prevention apparatus

Inventors: Keisuke Washizu (Tokyo, JP); Manabu Dohi (Tokyo, JP)
Assignee: HOCHIKI Corporation
G08B17/103
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,430,997
App. No.
18/118,811
Granted
Sep 30, 2025
Kind
B2
Abstract

A detector 100 includes: an outer cover 11 ; and an indicator that outputs at least information about a test of a disaster prevention apparatus by emitting light, and that is provided in the outer cover 11 , wherein when at least a part of the outer cover 11 is covered with a test apparatus in order to perform the test of the detector 100 , at least a part of an indication surface of the indicator is exposed to an outside of the test apparatus and the indicator is formed in a side portion of the outer cover 11 , the indicator is formed in an edge portion of a front portion of the outer cover 11 , and the indicator is a part of a light guide portion 111 that is formed in the outer cover 11 , and that guides light from a light emitter.

Claims (12)

1. A disaster prevention apparatus installed on an attachment object of a monitoring region comprising:

an outer cover;

an indicator that outputs at least information about a test of the disaster prevention apparatus by emitting light, and that is provided in the outer cover; and

a detection element protector that accommodates a detection element to detect a fire outbreak or a gas leakage in the monitoring region, and that protrudes from the outer cover,

wherein the indicator is formed as a thin portion that is a portion thinner than other portions of the outer cover,

wherein the detection element protector has a spectroscopic portion that allows light from a light emitter to enter the detection element protector and the thin portion,

wherein the light from the light emitter is viewed from outside of the outer cover through the detection element protector and the thin portion,

wherein the outer cover comprises a front portion which is located on a side opposite the attachment object with respect to the disaster prevention apparatus, a back portion which is located on a side facing the attachment object, and a side portion which is a peripheral surface connected to the front portion and to the back portion,

wherein the thin portion is formed in at least the side portion of the outer cover, and

wherein when at least a part of the front portion of the outer cover is covered with a test apparatus in order to perform the test of the disaster prevention apparatus, at least a part of an indication surface of the thin portion which is a part formed at the side portion of the outer cover is exposed to an outside of the test apparatus.

2. The disaster prevention apparatus according to claim 1 , wherein the thin portion protrudes from a side portion of the outer cover.

3. The disaster prevention apparatus according to claim 1 , wherein the disaster prevention apparatus is at least a heat detector.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 16, 2023
From: WASHIZU, KEISUKE; DOHI, MANABU
To: HOCHIKI CORPORATION
Reel/Frame 065891/0292 →
Continuity (2)
Continuation In Part PCTJP2020040837 · Oct 30, 2020
Related Publication 20230290237A1 · Sep 14, 2023
References Cited (23)
US 6300876B1 · Sakurai · 2001 [cited by examiner]
US 20030058117A1 · Kari et al. · 2003 [cited by applicant]
US 20090243835A1 · Katou · 2009 [cited by examiner]
US 20100259376A1 · Hong · 2010 [cited by applicant]
EP 1049061A2 · 2000 [cited by applicant]
EP 3866130A1 · 2021 [cited by applicant]
JP H02257399A · 1990 [cited by applicant]
JP H09128666A · 1997 [cited by applicant]
JP 2003036488A · 2003 [cited by applicant]
JP 2003248878A · 2003 [cited by examiner]
JP 2006215865A · 2006 [cited by applicant]
JP 2007011684A · 2007 [cited by examiner]
JP 1332979 · 2008 [cited by applicant]
JP 2012198757A · 2012 [cited by applicant]
JP 2017107534A · 2017 [cited by applicant]
JP 2019168914A · 2019 [cited by examiner]
JP 2019200810A · 2019 [cited by examiner]
KR 100313337B1 · 2001 [cited by examiner]
WO 2019189128A1 · 2019 [cited by applicant]
International Search Report & Written Opinion of PCT/JP2020/040837 dated Dec. 1, 2020, all pages cited in its entirety. [cited by applicant]
Search Report issued in corresponding European Patent Application No. 20959864 mailed Jul. 1, 2024, all pages cited in its entirety. [cited by applicant]
Written Opinion issued in corresponding European Patent Application No. 20959864.8 mailed Jul. 1, 2024, all pages cited in its entirety. [cited by applicant]
Communication pursuant to Article 94(3) EPC from corresponding EP Application No. 20959864.8, mailed Apr. 23, 2025, all pages cited in its entirety. [cited by applicant]