Title:
AN ELECTRIC DOOR
Document Type and Number:
WIPO Patent Application WO/2008/077310
Kind Code:
A1
Abstract:
An electric door comprises a positive and reverse motor, a band brake and three control buttons for raising, descending and intermediate position respectively, wherein three limit switches are provided, with an intermediate limit switch (SQ2) being disposed between an upper end switch (SQ1) and a lower end switch (SQ3). The electric door can be operated to reach a half-opened position by only pressing the control button for intermediate position one time.
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Inventors:
PIAO CHENGRI (CN)
Application Number:
PCT/CN2007/003638
Publication Date:
July 03, 2008
Filing Date:
December 18, 2007
Export Citation:
Assignee:
PIAO CHENGRI (CN)
International Classes:
E05F15/10; B66B13/14; E06B11/02
Foreign References:
| JPH03205288A | 1991-09-06 | |||
| CN2711115Y | 2005-07-20 | |||
| JPH0233082A | 1990-02-02 | |||
| JPH0351289A | 1991-03-05 | |||
| CN2803214Y | 2006-08-09 | |||
| CN2210172Y | 1995-10-18 | |||
| US5686710A | 1997-11-11 |
Attorney, Agent or Firm:
LIAONING SHENYANG GUOXING INT'L PATENT OFFICE (NanYijing StreetShenhe District,Shenyang, Liaoning 4, CN)
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