Floor hatch with integrated security fence

Details Floor hatch with integrated security fence Floor hatch with integrated security fence

1998-03-20

1999-08-24

Kent, Christopher T.

Static structures (e.g., buildings)

With entrance for persons or objects in horizontal or...

With additional enclosure structure; e.g., manhole

52 64, 49 33, 49 67, 182112, E02D 2914

Patent

active

059410248

ABSTRACT:
A floor hatch with a built-in security fence is described, where access to the understructure can only be provided wherein a pair of doors are pivoted outwardly to an open position and secured, forming two opposite sides of the security fence; a first gate is pivoted outwardly to an open position and secured to each of the doors, forming the rear of the security fence and a second gate, leaving a pivoting door, is pivoted outwardly and secured to each of the doors forming the front of the security fence. The pivoting door of the second gate pivots outwardly to permit access to the opening in the floor. The floor hatch may also include a security grate and telescoping extension on each of the doors. The floor hatch can be locked in the closed position and can be opened, automatically forming a security fence, to permit access to an understructure of a floor.

REFERENCES:
patent: 4090585 (1978-05-01), Laub
patent: 4121392 (1978-10-01), Plewacki
patent: 4150510 (1979-04-01), Harrison et al.
patent: 4186521 (1980-02-01), Hunter
patent: 4266380 (1981-05-01), Samolis
patent: 4308697 (1982-01-01), Guppy
patent: 4561483 (1985-12-01), Calvert
patent: 5354036 (1994-10-01), Brown
patent: 5419537 (1995-05-01), Thompson
patent: 5546703 (1996-08-01), Conway
patent: 5630572 (1997-05-01), Guay

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