US 8,113,265 B2Granted

Washdown door

AssigneeRite-Hite Holding Corporation

InventorsCarl David Hardison, III, James C. Boerger, Peter S. Schulte, Thomas Jansen

Life of this patent

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Abstract

An example of a door with a pliable curtain includes various washdown features that make the door particularly suitable for use in food and drug related environments that demand cleanliness. To prevent product contamination, such as bacteria and other microorganisms, some examples of the door include a curtain storage track with a spiral groove machined in a unitary block of plastic, a ventilated side frame with a removable curtain guide track and a removable seal, and various curtain seams that not only join multiple sheets of the curtain together but also promote and strategically direct liquid runoff to avoid creating water-holding surfaces and to prevent liquid from dripping on products passing through the doorway.

Claims26

Dependent claims

A door for a doorway in a wall, the door comprising:

a side frame that is elongate and mountable to the wall;
a track to be disposed on the side frame, wherein the track is elongate and is to be generally parallel to the side frame;
a curtain to be moved along the track to selectively open and close the door;
a plurality of standoffs to be interposed between the side frame and the wall such that when the side frame is mounted to the wall, the standoffs provide an appreciable air gap to convey a current of air between the side frame and the wall;
and
a seal to be removably coupled to the side frame and spaced-apart from the standoffs, the seal is elongate and generally parallel to the side frame and extends to the wall to obstruct a current of air when the seal is coupled to the side frame while the side frame is attached to the wall.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/396,075Filed 2 Mar 2009
Published: US 2010/0218431 A12 Sep 2010
Granted: 14 Feb 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

E06B 9/13
Roller shutters: with closing members of one piece, e.g. of corrugated sheet metal
E06B 9/58
Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor:…
E06B 9/582
Guiding devices: means to increase gliss, light, sound or thermal insulation
E05D 15/165
For wings sliding vertically more or less in their own plane: details, e.g. sliding or rolling guides