Movable or removable closures – Closures interconnected for concurrent movement – Opposed similar movement
Patent
1996-08-15
1997-12-30
Purol, David M.
Movable or removable closures
Closures interconnected for concurrent movement
Opposed similar movement
49 731, 49122, 49449, 160210, E05C 706
Patent
active
057017018
ABSTRACT:
A safety gate is provided for limiting access to a work area. The safety gate includes a linkage pivotally connected to a support, and front and rear gates each being pivotally connected to one end of the linkage. As the linkage pivots about the support to move one gate upward, while moving the other gate downward, each gate remains substantially parallel to one another. The safety gate also includes a latch mechanism for locking the either of the front and rear gates into a particular position.
REFERENCES:
patent: 3740022 (1973-06-01), DiGiovanni
patent: 4041646 (1977-08-01), Mittag
patent: 4300313 (1981-11-01), Steinke
patent: 4422264 (1983-12-01), Harris
patent: 4438596 (1984-03-01), Jones et al.
patent: 4538379 (1985-09-01), Vargo
patent: 5241789 (1993-09-01), Vacelet
patent: 5546703 (1996-08-01), Conway
patent: 5592779 (1997-01-01), Conway
"Roly Safeti-Gate", Association of Mezzamine Manufacturers, Product Brochure.
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