Blast gate for vacuum system
OwnerRobert G. Hartnessinventor
Life of this patent
Estimating the term…
Abstract
A blast gate for a vacuum system includes a chassis connectable to a duct and defining a flow passage therethrough, and a gate connected to the chassis and rotatable about a central axis. The gate includes a first portion, an intermediate portion and a second portion spaced apart circumferentially about the central axis. The first portion defines a flow aperture, the intermediate portion defines an auxiliary flow aperture, and the second portion includes a partition. Each of the first portion, second portion and third portion is selectively rotatable into fluid alignment with the flow passage. The blast gate further includes a motor connected to the gate and selectively operable to rotate the gate about the central axis.
Claims19
A blast gate for a vacuum system, the vacuum system comprising a duct, the blast gate comprising:
- a chassis connectable to the duct and defining a flow passage therethrough;
- a gate connected to the chassis and rotatable about a central axis, the gate comprising a first portion, an intermediate portion and a second portion spaced apart circumferentially about the central axis, the first portion defining a flow aperture, the intermediate portion defining an auxiliary flow aperture, the second portion comprising a partition, each of the first portion, second portion and intermedidate portion selectively rotatable into fluid alignment with the flow passage;
- a motor connected to the gate and selectively operable to rotate the gate about the central axis;
- and
- a clutch assembly connecting the motor to the gate, the clutch assembly comprising a bolt, a washer, a spring, and a nut;
- wherein the gate is rotatable between a stationary first position wherein the first portion is in fluid alignment with the flow passage and a stationary second position wherein the second portion is in fluid alignment with the flow passage, and wherein the gate is rotatable through an intermediate position wherein the intermediate portion is in fluid alignment with the flow passage during rotation from the first position to the second position.
A vacuum system, comprising:
- a vacuum;
- a duct;
- and
- a blast gate connected to the duct, the blast gate comprising:
- a chassis connected to the duct and defining a flow passage therethrough;
- a gate connected to the chassis and rotatable about a central axis, the gate comprising a first portion, an intermediate portion and a second portion spaced apart circumferentially about the central axis, the first portion defining a flow aperture, the intermediate portion defining an auxiliary flow aperture, the second portion comprising a partition, each of the first portion, second portion and intermediate portion selectively rotatable into fluid alignment with the flow passage;
- a motor connected to the gate and selectively operable to rotate the gate about the central axis;
- and
- an electrical assembly in electrical comunication with the motor, the eletrical assembly comprising a relay and a plurality of switches,
- wherein the gate is rotatable between a stationary first position wherein the first portion is in fluid alignment with the flow passage and a stationary second position wherein the second portion is in fluid alignment with the flow passage, and wherein the gate is rotatable through an intermediate position wherein the intermediate portion is in fluid alignment with the flow passage during rotation from the first position to the second position.
A blast gate for a vacuum system, the vacuum system comprising a duct, the blast gate comprising:
- a chassis connectable to the duct and defining a flow passage therethrough;
- a gate connected to the chassis and rotatable about a central axis, the gate comprising a first portion, an intermediate portion and a second portion spaced apart circumferentially about the central axis, the first portion defining a flow aperture, the intermediate portion defining an auxiliary flow aperture, the second portion comprising a partition, each of the first portion, second portion and intermediate portion selectively rotatable into fluid alignment with the flow passage;
- a motor connected to the gate and selectively operable to rotate the gate about the central axis;
- and
- an electrical assembly in electrical communication with the motor, the electrical assembly comprising a relay and a plurality of switches, each of the plurality of switches comprising a contact arm, the contact arm of each of the plurality of switches selectively contactable with a peripheral edge of the gate;
- wherein the gate is rotatable between a stationary first position wherein the first portion is in fluid alignment with the flow passage and a stationary second position wherein the second portion is in fluid alignment with the flow passage, and wherein the gate is rotatable through an intermediate position wherein the intermediate portion is in fluid alignment with the flow passage during rotation from the first position to the second position.
Dependencies are inferred from the claim text.