Oven hood with automatic switch

Claim 2

An exhaust hood comprising a housing including a pivotal faceplate, a fan within the housing, switch means for connecting the fan to an external source of electrical power, movable means connected to the interior side of the faceplate and movable in response to pivotal movement of the faceplate, connecting means connected between said movable means and the switch means and operable in response to movement of the movable means to operate the switch means in response to such movement.

Claim 3

An exhaust hood as set forth in claim 1 wherein said movable means is a cam rotatable in a vertical plane to a plurality of predetermined positions, the connecting means is a member held constantly in engagement with the cam, and the switch means is operable in response to positioning of the cam as determined and translated to the switch means by said member.

Claim 4

An exhaust hood as set forth in claim 2 wherein restraining means is maintained in engagement with said cam for yieldably retaining said faceplate in adjusted position.

Claim 5

An exhaust hood comprising a housing including a faceplate movable from a closed position to a wide open position through at least one intermediate position, a fan in said housing, switch means for connecting the fan to an external source of electrical power, and switch-activating means connected between said switch means and said faceplate for oPerating said switch in response to movements of the faceplate into and out of said positions, said restraining means comprising a disclike member fixed to the faceplate and extending inwardly of the housing adjacent a portion thereof, and spring means carried by said portion of the housing and engaging said member.

Claim 6

An exhaust hood comprising a housing including a faceplate movable from a closed position to a wide open position through at least one intermediate position, a fan in said housing, switch means for connecting the fan to an external source of electrical power, and switch-activating means connected between said switch means and said faceplate for oPerating said switch in response to movements of the faceplate into and out of said positions, said restraining means comprising a disclike member fixed to the faceplate and extending inwardly of the housing adjacent a portion thereof, and spring means carried by said portion of the housing and engaging said member.

Claim 7

An exhaust fan as set forth in claim 4 wherein said member is provided with indexing means corresponding to selected positions of the faceplate, and said spring means is located to engage said indexing means in response to movement of the faceplate.

Claim 8

An exhaust fan comprising a housing including a faceplate movable from a closed position through at least one intermediate position to a wide open position, a fan in said housing, switch means for connecting the fan to an external source of electrical power, and switch-actuating means connected between said switch means and said faceplate for operating said switch means in response to movements of the faceplate into and out of said positions, said switch-actuating means comprising a cam plate fixed to the faceplate and having an irregular surface contoured to correspond to said positions of the faceplate, and a pivotal actuator having a first end portion in engagement with said irregular surface and an opposite end portion connected with said switch means for actuating the switch in response to movement of the first end portion of the actuator as it is moved by said irregular surface when the cam plate is moved.

Claim 9

An exhaust fan comprising a housing including a faceplate movable from a closed position through at least one intermediate position to a wide open position, a fan in said housing, switch means for connecting the fan to an external source of electrical power, and switch-actuating means connected between said switch means and said faceplate for operating said switch means in response to movements of the faceplate into and out of said positions, said switch-actuating means comprising a cam plate fixed to the faceplate and having an irregular surface contoured to correspond to said positions of the faceplate, and a pivotal actuator having a first end portion in engagement with said irregular surface and an opposite end portion connected with said switch means for actuating the switch in response to movement of the first end portion of the actuator as it is moved by said irregular surface when the cam plate is moved.

Claim 10

An exhaust hood as set forth in claim 6 wherein restraining means is located between said cam plate and an adjacent portion of the housing for yieldably retaining the faceplate in adjusted position.