发明名称 |
Magnetic door opener |
摘要 |
A magnetic door opener device adapted to be positioned below a countertop made of non-magnetic materials, the device having a pair of magnets which attractively interact with a pair of magnets attached to the bottoms of a pair of windows which are suspended on a trolley for movement to or fro to determine closed and opened positions of the window. The device underneath the countertop comprises a pair of spaced toothed sprockets supporting an endless belt having inner and outer runs, the outer run supporting a magnet adapted to magnetically cooperate with a magnet in the bottom of one of the windows, and the other run of the belt supporting a different magnet adapted to attractively cooperate with a magnet in the bottom of the other window. A motor control and limit switches are provided for controlling the opening and closing positions of the windows when a control switch is operated by an operator. The belt has a plurality of apertures which, in conjunction with the teeth on the sprockets, prevent slippage and at the same time provide a means for adjustably positioning the magnets on the endless belt to thereby determine the size of the opening between the opened windows.
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申请公布号 |
US4674231(A) |
申请公布日期 |
1987.06.23 |
申请号 |
US19860859078 |
申请日期 |
1986.05.02 |
申请人 |
READY METAL MANUFACTURING COMPANY |
发明人 |
RADEK, JOHN R.;MAKS, RICHARD;VESTUTO, RUSSELL |
分类号 |
E05F15/14;E05F15/18;(IPC1-7):E05C7/06 |
主分类号 |
E05F15/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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