Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
130 words
The combiNation with a pressure switch including a housing having a portion in which a plunger is reciprocally mounted and adjusts a calibrating spring, of a mounting bracket fixed on the housing, a shaft journaled in the bracket, a cam fixed on the shaft and disposed laterally of said housing portion and depending below the upper position of said plunger, lever means biased into engagement with the cam and acting on said plunger and adjusting the calibrating spring, an arm adapted to actuate external apparatus and mounted for movement between inoperative and operative positions, means biasing the arm to its inoperative position, and means carried by the cam removably engaged with said arm to move the arm to its operative position when the cam is moved to a specific position.
Claim 2
Dependent Claim
130 words
The combiNation with a pressure switch including a housing having a portion in which a plunger is reciprocally mounted and adjusts a calibrating spring, of a mounting bracket fixed on the housing, a shaft journaled in the bracket, a cam fixed on the shaft and disposed laterally of said housing portion and depending below the upper position of said plunger, lever means biased into engagement with the cam and acting on said plunger and adjusting the calibrating spring, an arm adapted to actuate external apparatus and mounted for movement between inoperative and operative positions, means biasing the arm to its inoperative position, and means carried by the cam removably engaged with said arm to move the arm to its operative position when the cam is moved to a specific position.
Claim 3
Dependent Claim
47 words
The combination of claim 1 in which the lever means is a compound leverage having a motion multiplying effect and including a follower lever engaging said cam and an adjusting lever which acts on said plunger, said biasing means comprising a spring acting on the follower lever.
Claim 4
Dependent Claim
54 words
The combination of claim 2 in which the cam is profiled to move the follower lever to a position out of engagement with the adjusting lever and including adjustable stop means carried by said bracket and engaged by the adjusting lever when the follower lever is moved out of engagement with the adjusting lever.
Claim 5
Dependent Claim
138 words
The combination with a pressure switch including a housing having a portion in which a plunger is reciprocally mounted and adjusts a calibrating spring, of a mounting bracket fixed on the housing, a shaft journaled in the bracket, a cam fixed on the shaft and disposed laterally of said housing portion and depending below the upper position of said plunger, a follower lever mounted on the bracket including a follower engaging the cam, an adjusting lever mounted on the bracket and engaging the plunger and engaged by the follower lever whereby motion imparted to the follower lever by the cam is imparted to the plunger, said cam causing the actuating lever to move out of engagement with the adjusting lever in one position, and adjustable limit stop means effective to position the adjusting lever in said one position.
Claim 6
Dependent Claim
138 words
The combination with a pressure switch including a housing having a portion in which a plunger is reciprocally mounted and adjusts a calibrating spring, of a mounting bracket fixed on the housing, a shaft journaled in the bracket, a cam fixed on the shaft and disposed laterally of said housing portion and depending below the upper position of said plunger, a follower lever mounted on the bracket including a follower engaging the cam, an adjusting lever mounted on the bracket and engaging the plunger and engaged by the follower lever whereby motion imparted to the follower lever by the cam is imparted to the plunger, said cam causing the actuating lever to move out of engagement with the adjusting lever in one position, and adjustable limit stop means effective to position the adjusting lever in said one position.
Claim 7
Dependent Claim
27 words
Apparatus according to claim 4 in which the levers provide a motion multiplying effect imparting greater movement to the plunger than the cam imparts to the follower.
Claim 8
Dependent Claim
23 words
Apparatus according to claim 5 including means for initially adjusting the adjusting lever relative to the plunger independently of the cam and follower.