US 6,883,273 B2Granted

Hydraulically operated overhead door

AssigneeCottonwood Welding & Manufacturing, Inc.

InventorDouglas J. Kerkvliet

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Abstract

An overhead door assembly in which the door assembly has a vertical closed position and a horizontal opened position, the door assembly including a frame having a horizontal support member and first and second vertical members fixedly mounted to either end of the horizontal member, the vertical members are fixedly mounted to the ground. A one piece door member includes top and bottom horizontal ends and first and second vertical sides and is pivotally mounted to the horizontal member of the frame with the door member being movable from a closed position to an opened position about a pivot point. A hydraulic cylinder is pivotally mounted on a portion of either of the first or second vertical members and the second end of the hydraulic cylinder is pivotally mounted to the door member. The hydraulic cylinder includes a ram movably disposed within the cylinder and transmits an opening and closing force to the door member.

Claims26

Dependent claims

An overhead door assembly for a building having an opening to be closed by a door, the door assembly having a vertical closed position and a horizontal open position and the door assembly having dimensions that are substantially equal to the building opening, comprising:

a frame, comprising a horizontal support member and first and second vertical members fixedly mounted to either end of the horizontal member, the vertical members fixedly mounted to a ground portion;
a one-piece door member having a thickness including top and bottom horizontal ends and first and second vertical sides, the top horizontal end of the door member pivotally mountable to the horizontal member of the frame and the door member movable from the closed position to the open position about the pivot point;
a hydraulic cylinder comprising a first end and a second end, the first end pivotally mountable to a portion of either one of the first and second vertical members, and the second end pivotally mountable to the door member, the hydraulic cylinder having a ram movably disposed within the hydraulic cylinder communicating an opening force and a closing force to the door member, and
a load bearing truss externally mounted to an outside face of the bottom horizontal end of the door member with respect to the building and providing sufficient support to the door member wherein structural integrity of the door is maintained when the door member is in the open position.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 09/873,481Filed 4 Jun 2001 · continuation
Priority: 10 Nov 1998
Published: US 2002/0029524 A114 Mar 2002
Granted: 26 Apr 2005
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

E05D 11/00
Additional features or accessories of hinges
E05F 15/53
Using fluid-pressure actuators: for swinging wings
E06B 3/01
Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like…:…
F15B 20/004
Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator…:…