Overhead Door Corporation

Overhead Door Corporatior

Ruiping Ouyang

Toru Kimura

Thomas Joseph Steckbeck

Kazuo Mita

Sree Lakshmi Kanuri

Philip Sotak

Girish Malligere

Kirk E Mellits

A dock leveler with a lip hinge. The dock leveler may include a lip that may be disposed at a front portion of a deck. The deck and the lip may be connected via a joint to allow the lip to pivot relative to the deck. The joint may comprise a C-shaped shaft coupled to one of the lip and the deck. The C-shaped shaft may have a hollow interior and a radial opening to the hollow interior, the opening being less than 180 degrees. The joint may further comprise a pivot bar coupled to either the deck or the lip. The pivot bar may be pivotably disposed in the hollow interior of the C-shaped shaft in a manner allowing the lip to pivot relative to the deck between a down position and an up position.

Dock leveler with lip hinge

This disclosure presents a safe high speed roll-up door with spiral brackets. To enable a high speed operation, robust spiral brackets having efficient spacing are provided to guide the plurality of sectional slats. Durable and low noise signature rollers are used. A unique assembly configuration of the slats and the tracks guiding the rollers enable quick replacement of each individual roller without disassembling the door. A double-belt counter weight mechanism balances the door and incorporates safety sensors that prevent loosening the belts when the door is jammed. The belts are further adjustable using ratchets such that adjustment for the horizontal balance as well as weight position is made effortless. In all, the high speed roll-up door using sectional slats performs faster and quieter, withstands greater loads, and lasts longer than other existing roll-up doors with spiral brackets.

Roll-up door with spiral brackets

A high speed roll door is movable between an open and a closed position at an opening of a building. The door includes a flexible curtain and a pair of side columns. Each side column provides an inner track to guide the curtain in vertical movement and restrain the curtain from lateral movement during deployment and retraction. The curtain further includes multiple cross bars supporting the flexible curtain from one of the pair of side columns to the other. Each of the cross bars further includes a first longitudinal bar sandwiching part of the curtain; and a second longitudinal bar pivotally connected to the first longitudinal bar. The hinge has an axis of rotation parallel to the first and the second longitudinal bars. At least a wheel is rotatably affixed to each end of the second longitudinal bar to engage the inner track of each of the side columns.

Low friction high speed roll door at high wind loads

Growing community of inventors

Richardson, TX, United States of America

Ruiping Ouyang