Patent ID: 9408511
Filing Date: 2016-08-09
CPC Classification: A47L,E01H

Claim Text:
1. A pick-up head system for use with a surface cleaning vehicle having a fore-aft axis of travel, said pick-up head system comprising: a housing having an interior and a suctioning bottom opening defined by a bottom peripheral edge and open in fluid communication and debris transfer relation to said interior, and defining a fore-aft axis; a debris receiving main inlet in said housing, disposed in debris receiving relation with respect to a surface being cleaned, for receiving debris to said housing, and disposed in debris transfer relation to said interior of said housing for receiving debris to said housing; a rotatable door assembly mounted on said housing at said debris receiving main inlet for rotation about a substantially horizontally oriented door pivot axis, for controlling the passage of debris through said debris receiving main inlet; an air flow barrier operatively disposed between said rotatable door assembly and said housing to substantially preclude the passage of air and small debris between said rotatable door assembly and said housing; and, a debris outlet in said housing; wherein, in use, as said rotatable door assembly rotates about said horizontally oriented door pivot axis to thereby permit debris to enter said housing through said debris receiving main inlet, said air flow barrier substantially precludes the passage of air and small debris between said rotatable door assembly and said housing.