Elevator – industrial lift truck – or stationary lift for vehicle – Having specific means contacting or on load support for... – Stationarily mounted and having disparate movable contact...
Reexamination Certificate
2004-05-05
2010-11-16
Langdon, Evan H (Department: 3654)
Elevator, industrial lift truck, or stationary lift for vehicle
Having specific means contacting or on load support for...
Stationarily mounted and having disparate movable contact...
C187S294000, C187S343000, C187S360000
Reexamination Certificate
active
07832526
ABSTRACT:
The safety device according to the invention for operator protection in elevators with a low-height shaft bottom (5), is characterized in that it uses a brace (1) hinged on abase plate (3) secured to the bottom of the shaft (5) and arranged when folded in the horizontal position at a reduced height above the shaft bottom (5) in normal elevator operation, and a buffer element (9) secured underneath the car (11) and adapted to come into contact with a horizontal side surface of the brace (1) in its folded position, wherein said brace (1) is adapted to be moved by an appropriate lifting device (31) to a vertical lifted position in which the buffer element (9) can come into contact with an upper surface (15) of the brace (1), in a condition where the operator can work in the shaft bottom (5), wherein the length of the 15 brace added (1) to the thickness of the buffer element (9) provides for a sufficient depth between the underside of the car (11) and the shaft bottom (5) to suppress any risk for the operator to be crushed in the shaft bottom (5).
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PCT International Preliminary Report on Patentability for PCT/IB2004/001560, dated Feb. 16, 2006.
Carlson & Gaskey & Olds PC
Langdon Evan H
Otis Elevator Company
LandOfFree
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