US3552350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Visual signal means for a fire detection alarm
Assignee: Emdeko Distributing Inc
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Filing: 1969-07-14
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Granted: 1971-01-05
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Expires: 1989-07-14
Abstract
Abstract A visual signal means for a fire detection alarm device in which a flag-type signal means is normally biased into exposed, readily visible position to indicate that the driving or spring motor is not fully wound or energized. A latch member, responsive to the spring motor during its final winding into fully energized condition, positions the latch member at that time for latchable engagement with the flag means when manually positioned in nonexposed relation with respect to the alarm; the flag means being virtually immediately exposable upon initial unwinding action of the spring motor by release of the latch member which immediately responds to such initial unwinding action.
Inventors
- 👤 Richard D Ranney
- 👤 Eldridge H Smiley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:17
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/10; G08B17/11; G08B17/113
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
150 words
In combination with a mechanical alarm device including a spring motor provided with means to restrain rotation in one direction; the provision of: flag means normally biased into exposed position for indicating at least partially unwound condition of said condition of said spring motor and including a latch element; a latch member having one end portion thereof cooperably associated with said restraint means and the other end portion thereof limitedly movable; spring means biasing said latch member into a position normally nonengageable with said flag means; and means cooperable with said spring motor to move said latch member against its biasing spring means into latchable position for engagement with said latch element on said flag means, and upon initial change of said spring motor from fully wound condition to partial wound condition to immediately release said latch member from said latch element to cause said flag means to be exposed.
Claim 2
Dependent Claim
150 words
In combination with a mechanical alarm device including a spring motor provided with means to restrain rotation in one direction; the provision of: flag means normally biased into exposed position for indicating at least partially unwound condition of said condition of said spring motor and including a latch element; a latch member having one end portion thereof cooperably associated with said restraint means and the other end portion thereof limitedly movable; spring means biasing said latch member into a position normally nonengageable with said flag means; and means cooperable with said spring motor to move said latch member against its biasing spring means into latchable position for engagement with said latch element on said flag means, and upon initial change of said spring motor from fully wound condition to partial wound condition to immediately release said latch member from said latch element to cause said flag means to be exposed.
Claim 3
Dependent Claim
35 words
An alarm device as stated in claim 1 wherein said means cooperable with said spring motor includes means for increasing tension of said spring motor just prior to fully energized condition of the spring motor.
Claim 4
Dependent Claim
21 words
An alarm device as stated in claim 1 including means for antifrictionally mounting said other end portion of said latch member.
Claim 5
Dependent Claim
22 words
A device as stated in claim 1 including stop means for limiting movement of said other end portion of said latch member.
Claim 6
Dependent Claim
30 words
A device as stated in claim 1 wherein said restraint means includes a ratchet and a pawl, said pawl being carried on said one end portion of said latch member.
Claim 7
Dependent Claim
85 words
An immediately responsive visual indicating means for a fire detection alarm device or the like to visually indicate the energized condition of said alarm, the combination of: drive means for said alarm; a visual indicating member for said alarm; means for cooperably interconnecting said drive means and said visual indicating member including a drive means responsive member; and means connected with said responsive member normally holding the latter in nonengageable position with respect to said visual indicating member until said drive means is fully energized.
Claim 8
Dependent Claim
85 words
An immediately responsive visual indicating means for a fire detection alarm device or the like to visually indicate the energized condition of said alarm, the combination of: drive means for said alarm; a visual indicating member for said alarm; means for cooperably interconnecting said drive means and said visual indicating member including a drive means responsive member; and means connected with said responsive member normally holding the latter in nonengageable position with respect to said visual indicating member until said drive means is fully energized.
Claim 9
Dependent Claim
35 words
A device as stated in claim 6 including a ratchet connected with said drive means and a pawl carried by said responsive member for transmitting the condition of said drive means to said indicating member.
Claim 10
Dependent Claim
25 words
A device as stated in claim 6 including a spring means connected to said responsive member normally biasing said responsive member against said drive means.
Claim 11
Dependent Claim
29 words
A device as stated in claim 6 including means for limitedly movably mounting one end of said responsive member between engaged and nonengaged relationship with said visual indicating member.
Claim 12
Dependent Claim
73 words
In combination with an alarm device; the provision of: drive means having a fully energized condition for said alarm deviCe; visual signal means having an exposed and unexposed position mounted on said alarm device; and means interconnecting said drive means and said visual signal means and responsive to the condition of the drive means to hold the visual signal means in unexposed position only when said drive means is in fully energized condition.
Claim 13
Dependent Claim
73 words
In combination with an alarm device; the provision of: drive means having a fully energized condition for said alarm deviCe; visual signal means having an exposed and unexposed position mounted on said alarm device; and means interconnecting said drive means and said visual signal means and responsive to the condition of the drive means to hold the visual signal means in unexposed position only when said drive means is in fully energized condition.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |