CA1200461A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Apparatus for both venting smoke and blocking fire
Assignee: Honeywell Ltd Australia
•
Filing: 1983-08-31
•
Granted: 1986-02-11
•
Expires: 2003-08-31
Abstract
Abstract ABSTRACT A normally closed vent opens in response to smoke and closes and is locked closed in response to the heat of a fire.
Inventors
- 👤 James Jongsma
- 👤 William E.D. Platt
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-05 20:35
CPC Classifications
A; A62; A62C; A62C2/00; A62C2/06; A62C2/24; A62C2/241; A62C2/242; A62C2/246; A62C2/248
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
75 words
A vent comprising in combination: a blade moveable between a blocking and a venting position; means normally urging said blade to its blocking position; means for exerting a force to move said blade to its venting position in response to an alarm condi-tion; first means responsive to heat for relieving said force so that said blade returns to its blocking position; and second means responsive to heat for locking said blade in its blocking position.
Claim 2
Dependent Claim
75 words
A vent comprising in combination: a blade moveable between a blocking and a venting position; means normally urging said blade to its blocking position; means for exerting a force to move said blade to its venting position in response to an alarm condi-tion; first means responsive to heat for relieving said force so that said blade returns to its blocking position; and second means responsive to heat for locking said blade in its blocking position.
Claim 3
Dependent Claim
30 words
A vent as in claim 1 wherein said second means includes a spring driven bolt held in a retract position against the force of the spring by a fusible link.
Claim 4
Dependent Claim
17 words
A vent as in claim 1 wherein said means for exerting a force is a pneumatic motor.
Claim 5
Dependent Claim
17 words
A vent as in claim 1 wherein said means for exerting a force is a electric motor.
Claim 6
Dependent Claim
17 words
A vent as in claim 2 wherein said means for exerting a force is a pneumatic motor.
Claim 7
Dependent Claim
17 words
A vent as in claim 2 wherein said means for exerting a force is a electric motor.
Claim 8
Dependent Claim
33 words
A vent as in claim 3 further including a pair of heat responsive sensors on either side of said vent connected to said pneumatic motor to relieve the pneumatic pressure to said motor.
Claim 9
Dependent Claim
32 words
A vent as in claim 3 further including a pair of heat responsive sensors on either side of said vent connected to said electric motor to interrupt electric power to said motor.
Claim 10
Dependent Claim
66 words
A vent comprising in combination: a blade moveable between a blocking and a venting position; means normally urging said blade to its blocking position; means for moving said blade to its venting position in response to an alarm condition; first means responsive to heat for returning said blade to its blocking position; and second means responsive to heat for locking said blade in its blocking position.
Claim 11
Dependent Claim
66 words
A vent comprising in combination: a blade moveable between a blocking and a venting position; means normally urging said blade to its blocking position; means for moving said blade to its venting position in response to an alarm condition; first means responsive to heat for returning said blade to its blocking position; and second means responsive to heat for locking said blade in its blocking position.
References Cited (Backward Citations)
No citation records indexed.
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