Title:
The alarm strengthening protective cover provided with an alternative calibration chamber for safe apparatus
Document Type and Number:
Japanese Patent JP6093021
Kind Code:
B2
Abstract:
Methods and systems to redirect the audible and visible signals from alarms on a portable safety device. A cover (10) cooperates with a portable safety device (50) to define a sound chamber (12) that amplifies audible warning signals. A visual alarm guide (14) also is provided. A calibration adapter (500) affords quick and simple bump testing and calibration of the portable safety device.
Inventors:
One, Taeyeon
Hughes, Charles
Day, blood
Hughes, Charles
Day, blood
Application Number:
JP2015534479A
Publication Date:
March 08, 2017
Filing Date:
July 02, 2013
Export Citation:
Assignee:
Industrial Scientific Corporation
International Classes:
G08B3/00; G08B21/16; G08B23/00
Domestic Patent References:
| JP2007193773A |
Foreign References:
| US4525872 |
Attorney, Agent or Firm:
Taro Yaguchi
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