Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
192 words
A diesel engine warning system for warning an operator of a diesel engine when a vacuum in the air intake system of the engine exceeds a predetermined maximum or falls below a predetermined minimum vacuum comprising: a vacuum gauge including a pair of spaced electrical contact means, an indicator movable between said electrical contact means, and means responsive to the vacuum in said engine air intake system for moving said indicator, means for connecting said vacuum gauge to said air intake system of a diesel engine, an electrical circuit which includes at least one electrically actuable warning signal device, and means for connecting said electrical contact means to said circuit, said indicator being movable into engagement with one of said electrical contact means on an increase in vacuum above a predetermined maximum indicating a restriction in said air intake to the engine and into engagement with the other of said electrical contact means on a decrease in vacuum below a predetermined minimum indicating the loss of filtering of the intake air to the engine to actuate said warning signal device to warn said operator of such condition in said air intake system.
Claim 2
Dependent Claim
192 words
A diesel engine warning system for warning an operator of a diesel engine when a vacuum in the air intake system of the engine exceeds a predetermined maximum or falls below a predetermined minimum vacuum comprising: a vacuum gauge including a pair of spaced electrical contact means, an indicator movable between said electrical contact means, and means responsive to the vacuum in said engine air intake system for moving said indicator, means for connecting said vacuum gauge to said air intake system of a diesel engine, an electrical circuit which includes at least one electrically actuable warning signal device, and means for connecting said electrical contact means to said circuit, said indicator being movable into engagement with one of said electrical contact means on an increase in vacuum above a predetermined maximum indicating a restriction in said air intake to the engine and into engagement with the other of said electrical contact means on a decrease in vacuum below a predetermined minimum indicating the loss of filtering of the intake air to the engine to actuate said warning signal device to warn said operator of such condition in said air intake system.
Claim 3
Dependent Claim
35 words
The system of claim 1 wherein said electrical contact means comprises a pair of spaced contact rivets mounted in adjustment arms whereby the positions of said contact rivets may be adjusted by adjusting said arms.
Claim 4
Dependent Claim
33 words
The system of claim 2 wherein said adjustment arms are mounted to a transparent cover closing said gauge and wherein the positions of said contact rivets may be adjusted from without said gauge.
Claim 5
Dependent Claim
21 words
The system of claim 1 wherein said means for moving said indicator comprises a diaphragm operated plunger engaging a crank arm.
Claim 6
Dependent Claim
15 words
The system of claim 1 wherein said warning signal device comprises a visual warning device.
Claim 7
Dependent Claim
29 words
The system of claim 1 wherein said indicator is electrically conductive and is electrically grounded, said electric circuit being completed by contact of said indicator with said contact means.
Claim 8
Dependent Claim
51 words
The system of claim 1 wherein said circuit includes an electrically actuable valve in the fuel line to said engine, said valve being actuated when said indicator engages said other of said electrical contact means on a decrease in vacuum below a predetermined minimum to restrict fuel flow to said engine.
Claim 9
Dependent Claim
53 words
The system of claim 7, wherein said vacuum gauge further comprises means extending through said cover for mounting each said contact and permitting adjustment of the position of each said contact from the exterior of said gauge and hand-actuable means for moving said indicator out of engagement with one of said contact means.