IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0084667
(2005-03-18)
|
등록번호 |
US-7574826
(2009-08-31)
|
발명자
/ 주소 |
|
대리인 / 주소 |
Schmeiser, Olsen & Watts LLP
|
인용정보 |
피인용 횟수 :
6 인용 특허 :
44 |
초록
▼
An emergency door opening actuator includes electrical switches that are at least one of normally open and normally closed. The electrical switches may be connected accordingly in parallel or in series to terminals of an overhead door operator. The terminals may correspond to a push button circuit,
An emergency door opening actuator includes electrical switches that are at least one of normally open and normally closed. The electrical switches may be connected accordingly in parallel or in series to terminals of an overhead door operator. The terminals may correspond to a push button circuit, an obstruction sensing circuit, an alarm system circuit, and/or a door opening circuit. The emergency door opening actuator may take advantage of a protocol in the operator to cause the overhead door to open during an emergency condition to facilitate egress. Likewise, the emergency door opening actuator may cause that the overhead door cannot close by signaling the protocol in a predetermined way when the switches are actuated by an emergency condition. The electrical switches may be mechanically actuated when at least one fusible link is broken. The emergency door opening actuator may include an automatic mechanical stop and/or a test release mechanism.
대표청구항
▼
The invention claimed is: 1. A door system, comprising: an operator operatively coupled with a door; a first door opening actuator operatively coupled with the operator, the first door opening actuator including a switch actuator and a switch; a first fusible link coupled with the switch actuator w
The invention claimed is: 1. A door system, comprising: an operator operatively coupled with a door; a first door opening actuator operatively coupled with the operator, the first door opening actuator including a switch actuator and a switch; a first fusible link coupled with the switch actuator with a sash, wherein the switch actuator activates the switch in response to the first fusible link breaking; and a second door opening actuator operatively coupled with the door through a shaft, the second door opening actuator including a mechanical stop operatively coupled with the shaft, and a microswitch operatively coupled with the switch. 2. The system of claim 1, further including a pawl which operatively couples the mechanical stop with the microswitch. 3. The system of claim 2, further including a second fusible link coupled with the pawl with the sash. 4. The system of claim 3, wherein the pawl is biased to move from a position disengaged from the mechanical stop to a position engaged with the mechanical stop in response to the second fusible link breaking. 5. The system of claim 4, wherein the door is restricted from closing in response to the pawl engaging the mechanical stop. 6. The system of claim 5, wherein the switch is activated by the microswitch in response to the pawl moving from the disengaged position to the engaged position. 7. The system of claim 6, wherein the door opens in response to activating the switch. 8. A door system, comprising: an operator operatively coupled with a door; first door opening actuator operatively coupled with the operator, the door opening actuator including a switch actuator and first and second switches; a first fusible link coupled with the switch actuator with a sash, wherein the switch actuator activates the first and second switches in response to the first fusible link breaking; a second door opening actuator operatively coupled with the door through a shaft, the second door opening actuator including a mechanical stop operatively coupled with the shaft, and a microswitch operatively coupled with the first and second switches; a pawl which operatively couples the mechanical stop with the microswitch; and a second fusible link coupled with the pawl with the sash. 9. The system of claim 8, further including a spring which biases the pawl to move from a position disengaged from the mechanical stop to a position engaged with the mechanical stop in response to the second fusible link breaking. 10. The system of claim 9, wherein the door is restricted from closing in response to the pawl moving from the disengaged position to the engaged position. 11. The system of claim 8, wherein the first and second switches are activated by the microswitch in response to the pawl moving from the disengaged position to the engaged position. 12. The system of claim 11, further including a push button circuit operatively coupled with the first switch, wherein the door opens and closes in response to activating and deactivating, respectively, the push button circuit. 13. The system of claim 12, wherein the push button circuit is activated by the first switch in response to the pawl moving from the disengaged position to the engaged position. 14. The system of claim 11, further including an obstruction sensor circuit operatively coupled with the second switch, wherein the door opens in response to activating the obstruction sensor circuit. 15. The system of claim 14, wherein the obstruction sensor circuit is activated by the second switch in response to the pawl moving from the disengaged position to the engaged position. 16. A door system, comprising: an operator operatively coupled with a door; first door opening actuator operatively coupled with the operator, the first door opening actuator including a switch actuator and first and second switches; a first fusible link coupled with the switch actuator with a sash, wherein the switch actuator activates the first and second switches in response to the first fusible link breaking; a second door opening actuator operatively coupled with the door through a shaft, the second door opening actuator including a mechanical stop operatively coupled with the shaft, and a microswitch operatively coupled with the first and second switches; a pawl which operatively couples the mechanical stop with the microswitch; and a second fusible link coupled with the pawl with the sash; wherein the first and second switches are activated by the microswitch in response to movement of the pawl. 17. The system of claim 16, wherein the pawl is biased to move from a position disengaged from the mechanical stop to a position engaged with the mechanical stop in response to the second fusible link breaking. 18. The system of claim 16, further including a test release device operatively coupled with the door opening actuator through the sash and a third fusible link. 19. The system of claim 18, wherein tension in the sash is increased and decreased in response to deactivating and activating, respectively, the test release device. 20. The system of claim 16, further including an alarm system, wherein the pawl engages the mechanical stop in response to an emergency indication from the alarm system.
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