US4775823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for controlling opening/closing operation of automatic door in its accidental condition
Assignee: YKK Corp
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Filing: 1986-12-29
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Granted: 1988-10-04
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Expires: 2006-12-29
Abstract
Abstract According to a method for controlling an automatic door of the present invention, even when an accidental condition occurs due to some obstacle clogging a traveling lane of the door, the door can move at a high speed to its deceleration point so as to immediately enable a man to go through the door opening, while the door is prevented from colliding at a high speed against the obstacle repeatedly to make it possible to increase both the durability and safety of the door.
Inventors
- 👤 Yukio Yoshida
- 👤 Akiyoshi Takimoto
- 👤 Kenzo Ono
- 👤 Kiyotada Nishikawa
- 👤 Toshio Oura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:40
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/70; E05F15/60; E05F15/603; E05F15/632; E05F15/643; E05F15/40; G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/041; G05B19/0415; E05Y; E05Y2400/00; E05Y2400/10; E05Y2400/52; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132; G05B2219/00; G05B2219/30; G05B2219/45; G05B2219/45242
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
154 words
A method for controlling a door of an automatic door system, the door conducting a normal opening/closing operation between a normal opening stop point and a normal closing stop point according to a predetermined normal opening/closing operation mode when in a normal operating condition, the method for controlling the door when in an accidental operating condition comprising the steps of: establishing an accidental opening deceleration point and an accidental closing deceleration point based on a position of the door when an accidental condition occurs, said position where said accidental condition occurs being considered an accidental opening stop point or an accidental closing stop point during said establishing step; and moving the door at a high speed to said accidental opening deceleration point or said accidental closing deceleration point when a human body detection signal is input to said automatic door system to have the door conduct an opening/closing operation in an accidental operating mode.
Claim 2
Independent Claim
154 words
A method for controlling a door of an automatic door system, the door conducting a normal opening/closing operation between a normal opening stop point and a normal closing stop point according to a predetermined normal opening/closing operation mode when in a normal operating condition, the method for controlling the door when in an accidental operating condition comprising the steps of: establishing an accidental opening deceleration point and an accidental closing deceleration point based on a position of the door when an accidental condition occurs, said position where said accidental condition occurs being considered an accidental opening stop point or an accidental closing stop point during said establishing step; and moving the door at a high speed to said accidental opening deceleration point or said accidental closing deceleration point when a human body detection signal is input to said automatic door system to have the door conduct an opening/closing operation in an accidental operating mode.
Claim 3
Dependent Claim
95 words
A method as claimed in claim 1, further comprising the steps of: moving the door at a low speed opening/closing operation; confirming continuation of said accidental condition in the automatic door system by resetting an opening and closing accident storing flag when the door is moving at said low speed opening/closing operation; and eliminating said accidental condition in the automatic door sytem by confirming elimination of said accidental condition in the automatic door system by not resetting said opening and closing accident storing flag when the door is moving at said low speed opening/closing operation.
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) | 1991-10-04 | 1992-04-04 | 1992-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-04 | 1996-04-04 | 1996-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-04 | 2000-04-04 | 2000-10-04 | $7700.00 | Window Closed / Lapsed |