Abstract: A dock leveler comprises a deck having an upper surface, the deck configured to be pivotally attached to a loading dock. The dock leveler may further comprise a lip pivotally connected to the deck, the lip having an upper surface. The dock leveler may further comprise a slip resistant coating applied to the upper surface of the deck and the upper surface of the lip, the slip resistant coating cured to have a rough top surface irrespective of surface features of the surface the coating is applied to.

Abstract: A dock leveler for a loading dock having an adjustable leg bracket assembly. The dock leveler may include an adjustment bracket and a threaded adjustment shaft. The adjustment bracket may include a horizontal plate having a threaded hole. The threaded adjustment shaft may extend through the threaded hole of the horizontal plate and may be configured to adjust a height of the leg bracket assembly by rotation of the adjustment shaft relative to the horizontal plate. The threaded adjustment shaft may have a leading end that abuts against a base plate disposable in a fixed position on a floor of the dock. The base plate may be independent from the adjustment shaft.

Abstract: A dock leveler for a loading dock having an adjustable leg bracket assembly. The dock leveler may include an adjustment bracket and a threaded adjustment shaft. The adjustment bracket may include a horizontal plate having a threaded hole. The threaded adjustment shaft may extend through the threaded hole of the horizontal plate and may be configured to adjust a height of the leg bracket assembly by rotation of the adjustment shaft relative to the horizontal plate. The threaded adjustment shaft may have a leading end that abuts against a base plate disposable in a fixed position on a floor of the dock. The base plate may be independent from the adjustment shaft.

Abstract: A method for increasing friction on a traction surface of a deck plate or a lip plate of a dock leveler comprises pre-treating the traction surface of the deck plate or the lip plate of the dock leveler, the traction surface having a first lower coefficient of friction. The method further comprises applying a coating to the traction surface of the deck plate or the lip plate of the dock leveler. The coating is a thermosetting super durable polyester powder coating comprising friction-increasing particles, the friction-increasing particles being applied as a part of the powder coating to the dock leveler. The method further comprises curing the coating on the traction surface of the deck plate or the lip plate of the dock leveler to increase friction on the traction surface of the deck plate or the lip plate to a second higher coefficient of friction.

Abstract: 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.

Abstract: A dock leveler that fits within the pit of a loading dock. The dock leveler may have a rear leg bracket including a plurality of legs. The legs may be couplable to a bottom surface of the leg bracket and to a rear wall of the pit and may have a bottom portion attached to the bottom surface of the pit. The dock leveler may have a deck with a rear portion disposed adjacent the rear wall and supported by the rear leg bracket. The deck may be horizontal when in a stowed position. The dock leveler may also include a lift arm assembly extending from the bottom surface of the deck to the bottom surface of the pit and moveable along the bottom surface of the pit. The lift arm assembly may have a bottom portion movable independent of structure at the bottom portion of the plurality of legs.

Abstract: 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.

Abstract: A dock leveler that fits within a loading dock. In some embodiments, the dock leveler may include a leg bracket assembly couplable to a back wall of the dock and a deck. The leg bracket assembly may include a deck hinge shaft. The deck may include a deck platform having a back end and a front end and a beam coupled to a bottom surface of the deck platform. The deck may include a C-shaped profile, a first end coupled to the bottom surface of the deck platform proximate to the back end, and a second end coupled to the bottom surface of the deck platform proximate to the front end.

Abstract: A dock leveler with a deck hinge shaped to fit in the pit of a loading dock. The dock leveler may have a rear leg bracket including a plurality of legs couplable to a bottom surface and a rear wall of the pit. The leg bracket may be positioned directly adjacent the rear wall and may include a plurality of brackets having an upwardly facing opening configured to receive a cylindrical shaft. The dock leveler may also comprise a deck that may have a rear portion shaped to fit over the cylindrical shaft and located adjacent the rear wall. The cylindrical shaft may be sized to fit within the plurality of brackets such that the rear portion of the deck and the shaft may be disposed directly above the legs of the leg bracket.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.