Static structures (e.g. – buildings) – Combined
Patent
1975-10-15
1977-01-18
Bell, J. Karl
Static structures (e.g., buildings)
Combined
135 5A, E04F 1004
Patent
active
040031705
ABSTRACT:
A shelter to shield the loading passageway between a truck end and a dock door opening is provided with an improved yieldably biased extension system positioning the front frame member which supports cover material over the passageway and carries upright face panels for sealing engagement with the end of a truck backed thereinto. The extension system includes sets of angularly related arms pivotably connected to each other and to the frame member at each side of the shelter, with means constantly forcing on the arm sets so that the frame member normally is held in a limited outward position yet the locations of its supporting arm connections are displaceable toward the dock door opening either together or independently of one another as the truck end presses against the face panels. The face panels will thus conform in position to any posture of the docked truck relative to the door opening, so as to provide and maintain an effective sealing engagement.
REFERENCES:
patent: 3322132 (1967-05-01), Rieder et al.
patent: 3484883 (1969-12-01), Van Marle
patent: 3528086 (1970-09-01), Conger
patent: 3538655 (1970-11-01), Frommelt et al.
patent: 3638667 (1972-02-01), Frommelt et al.
Bell J. Karl
Johnston Albert C.
W. B. McGuire Co., Inc.
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