Patent ID: 11951611
Assignee: DELAWARE CAPITAL FORMATION, INC.
Field: Handling (Mechanical engineering)
Classification: CPC B  F  Y | IPC B  F

Claim 7:
8. An automatic release vacuum device for a material handling system, the automatic release vacuum device comprising:
a unitary body adapted to connect to a pressurized air supply, the unitary body including a vacuum passageway;
a piston element having a desired shape and a perimeter edge margin portion, defining a peripheral border of the desired shape, the piston element is disposed in the unitary body and includes a sealing element, the piston element movable in a first direction and a second direction and when the pressurized air supply is activated the pressurized air urges the piston element in the first direction toward a sealing position, the sealing element engaging the piston element edge margin portion, blocking entry of ambient air from atmosphere into the vacuum passageway;
a diverter passageway to divert a portion of the pressurized air to the piston element to urge the piston element toward the sealing position when the pressurized air supply is activated;
a venturi nozzle generating at least a partial vacuum in the vacuum passageway when the pressurized air is activated and when the piston element is in the sealing position; and
a biasing element biasing the piston element in the second direction and when the pressurized air supply is deactivated the biasing element biases the piston element in the second direction toward a venting position allowing entry of ambient air from atmosphere into the vacuum passageway and when the piston element is in the venting position the at least partial vacuum is destroyed.