US3757471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curtain wall safety panel
Assignee: Allied Products Corp
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Filing: 1971-11-09
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Granted: 1973-09-11
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Expires: 1991-11-09
Abstract
Abstract A safety curtain wall panel in a building is disclosed which includes a safety sash normally held in a closed position by a latch but which is automatically moved to an open position with respect to the panel when a sensing device detects an undesired atmosphere in the building. By this means smoke or heat detected will cause the sash to open permitting the building to be ventilated.
Inventors
- 👤 J Dougherty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:46
CPC Classifications
A; A62; A62C; A62C2/00; A62C2/06; E; E05; E05F; E05F15/00; E05F15/70; E05F15/72; E05F1/00; E05F1/02; E05F1/08; E05F1/16; E05Y; E05Y2201/00; E05Y2201/40; E05Y2201/404; E05Y2201/422; E05Y2201/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
189 words
A safety curtain wall construction comprising: a. a curtain wall panel, b. a support structure for said panel, c. at least one moveable safety sash in said panel, d. a sash receiving well beneath said safety sash and in said curtain wall into which said safety sash is adapted to be moved, e. latch means for engaging and maintaining said sash in a closed position relative to said panel, said latch means including a pivoted latch engaging the moveable sash, f. cam means for disengaing said latch means from said sash whereby said sash may move to an open position with respect to said wall panel, said cam means including a slotted cam pivoted on a pin with said cam contacting said latch, g. a sensing device responsive to a selected undesired atmosphere, and h. means connected to said sensing device and activated thereby to cause said cam means to disengage said latch, said means including a solenoid having a throw on which the slotted cam is pivoted whereby energizing of the solenoid causes the throw to move the cam to disengage the latch from the moveable safety sash.
Claim 2
Dependent Claim
189 words
A safety curtain wall construction comprising: a. a curtain wall panel, b. a support structure for said panel, c. at least one moveable safety sash in said panel, d. a sash receiving well beneath said safety sash and in said curtain wall into which said safety sash is adapted to be moved, e. latch means for engaging and maintaining said sash in a closed position relative to said panel, said latch means including a pivoted latch engaging the moveable sash, f. cam means for disengaing said latch means from said sash whereby said sash may move to an open position with respect to said wall panel, said cam means including a slotted cam pivoted on a pin with said cam contacting said latch, g. a sensing device responsive to a selected undesired atmosphere, and h. means connected to said sensing device and activated thereby to cause said cam means to disengage said latch, said means including a solenoid having a throw on which the slotted cam is pivoted whereby energizing of the solenoid causes the throw to move the cam to disengage the latch from the moveable safety sash.
Claim 3
Dependent Claim
153 words
A safetY curtain wall construction comprisng: a. a curtain wall panel, b. a support structure for said panel, c. at least one moveable safety sash in said panel, d. a sash receiving well beneath said safety sash and in said curtain wall into which said safety sash is adapted to be moved, e. latch means for engaging and maintaining said sash in a closed position relative to said panel, said latch means including a pivoted latch engaging the moveable sash, f. cam means for disengaging said latch means from said sash whereby said sash may move to an open position with respect to said wall panel, said cam means including a slotted cam pivoted on a pin with said cam contacting said latch, g. a sensing device responsive to a selected undesired atmosphere, and h. means connected to said sensing device and activated thereby to cause said cam means to disengage said latch.
Claim 4
Dependent Claim
153 words
A safetY curtain wall construction comprisng: a. a curtain wall panel, b. a support structure for said panel, c. at least one moveable safety sash in said panel, d. a sash receiving well beneath said safety sash and in said curtain wall into which said safety sash is adapted to be moved, e. latch means for engaging and maintaining said sash in a closed position relative to said panel, said latch means including a pivoted latch engaging the moveable sash, f. cam means for disengaging said latch means from said sash whereby said sash may move to an open position with respect to said wall panel, said cam means including a slotted cam pivoted on a pin with said cam contacting said latch, g. a sensing device responsive to a selected undesired atmosphere, and h. means connected to said sensing device and activated thereby to cause said cam means to disengage said latch.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |