Safety hatch for tanks, washing machines and industrial machines

Details Safety hatch for tanks, washing machines and industrial machines Safety hatch for tanks, washing machines and industrial machines

1996-06-21

1998-03-31

Elkins, Gary E.

Receptacles

Closures

Having means for securing or retaining closure in its closed...

29225673, 2922565, 10537711, 220327, B65D 4524

Patent

active

057328447

ABSTRACT:
A safety hatch for tanks, washing machines, industrial machines and the like comprises a frame and an arm having a first end pivotally connected to the frame. A second end of the arm has a surface portion provided with a hole having a circular section communicating with a slot section which extends to an external edge of the arm. A male threaded member is dimensioned to extend through the arm hole and has a first end pivotally connected to the frame and a second end. A female threaded member is adapted for threaded engagement with the male threaded member and has a head section and a shank section. A clamping member is integrally connected to the shank section of the female threaded member and has a tubular portion extending from the shank section. A fastener limits the displacement of the female threaded member along a predetermined axial length of the male threaded member, the tubular portion of the clamping member having a length greater than at least the predetermined axial length of the male threaded member.

REFERENCES:
patent: 1234133 (1917-07-01), Cole
patent: 1478218 (1923-12-01), Hamblin
patent: 2113776 (1938-04-01), Smith
patent: 3664700 (1972-05-01), Pickard
patent: 3756640 (1973-09-01), Johnson
patent: 3786955 (1974-01-01), Mowatt-Larssen
patent: 3907157 (1975-09-01), Beattie
patent: 4877364 (1989-10-01), Sorrentino
patent: 5489132 (1996-02-01), Schneider

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