Remotely activated tank hatch system

Details Remotely activated tank hatch system Remotely activated tank hatch system

2005-01-24

2011-12-06

Strimbu, Gregory J. (Department: 3634)

Receptacles

Closures

With closure opening arrangements for means

C220S811000, C220S252000, C105S377050, C105S377060

Reexamination Certificate

active

08070009

ABSTRACT:
A remotely activated tank hatch system includes an upper frame and a lower frame joined by a hinge assembly. The lower frame is coupled to a collar of an opening of a tank and a hatch is coupled to the upper frame. The hinge assembly allows the upper frame to pivot the hatch between an open and closed position. The lower frame includes at least one catch to receive an edge of the hatch, when the hatch is closed. Spring members on the upper frame urge the hatch toward the upper frame so that the hatch may be swung away from the opening. Inflating a rubber bladder positioned between the upper frame and hatch overcomes the spring pressure and urges the hatch into tight contact with the collar. The hatch system includes a remote control for inflating the bladder and opening and closing the hatch.

REFERENCES:
patent: 4854076 (1989-08-01), Sieben et al.
patent: 5150543 (1992-09-01), Wessiepe et al.
patent: 5937581 (1999-08-01), Matye et al.
patent: 6053348 (2000-04-01), Morch
patent: 6105805 (2000-08-01), Labelle
patent: 6196590 (2001-03-01), Kim
patent: 6293051 (2001-09-01), Matye
patent: 6318402 (2001-11-01), Ladeira
patent: 6561373 (2003-05-01), Chapin
patent: 7055440 (2006-06-01), Sisk
patent: 2002/0190068 (2002-12-01), Sisk et al.

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