Ionization type-smoke detector
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 22, 1988
Grant Date -
N/A
app pub date -
Jan 16, 1987
filing date -
Jan 17, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ionization-type smoke detector having inner and outer ionization chambers, a radioactive source to ionize the air within the inner and outer ionization chambers and a printed board to mount electrical circuits for detecting electrical potential at the connecting portion between both chambers is made to be relatively thin by arranging the inner, intermediate and outer electrodes so that they are respectively vertically mounted to the printed board while being transversally spaced apart from each other.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully