Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
240 words
An idle speed regulator for an internal combustion engine having a manifold, a carburetor, a throttle lever controlling said carburetor, and a throttle return spring yieldably urging said throttle lever to the idle position, said idle speed regulator comprising a housing defining a chamber therewithin, a plunger slidably mounted in said chamber and extending from said housing for engagement with said throttle lever to establish an adjustable idle position to which said throttle return spring urges said throttle, a pressure differential responsive member in said housing dividing the latter into a vacuum chamber communicated to the vacuum level in said manifold and a chamber communicated to ambient atmospheric pressure, resilient means yieldably urging said diaphragm against the end of said plunger and urging said plunger from said housing; valve means for regulating communication between said chambers, and stop means carried by said plunger and by said housing to establish the maximum extended position of said plunger, said resilient means including a first spring urging said plunger toward said stop means and a second spring urging said diaphragm toward said plunger, said first spring being weaker than the throttle return spring whereby said first spring will urge said plunger toward said stop means when the throttle lever is moved away from said plunger but said plunger will be urged away from said stop means when the throttle lever is moved to an idle condition wherein said throttle lever engages the plunger.
Claim 2
Dependent Claim
240 words
An idle speed regulator for an internal combustion engine having a manifold, a carburetor, a throttle lever controlling said carburetor, and a throttle return spring yieldably urging said throttle lever to the idle position, said idle speed regulator comprising a housing defining a chamber therewithin, a plunger slidably mounted in said chamber and extending from said housing for engagement with said throttle lever to establish an adjustable idle position to which said throttle return spring urges said throttle, a pressure differential responsive member in said housing dividing the latter into a vacuum chamber communicated to the vacuum level in said manifold and a chamber communicated to ambient atmospheric pressure, resilient means yieldably urging said diaphragm against the end of said plunger and urging said plunger from said housing; valve means for regulating communication between said chambers, and stop means carried by said plunger and by said housing to establish the maximum extended position of said plunger, said resilient means including a first spring urging said plunger toward said stop means and a second spring urging said diaphragm toward said plunger, said first spring being weaker than the throttle return spring whereby said first spring will urge said plunger toward said stop means when the throttle lever is moved away from said plunger but said plunger will be urged away from said stop means when the throttle lever is moved to an idle condition wherein said throttle lever engages the plunger.
Claim 3
Dependent Claim
26 words
The invention of claim 1: and means permitting uninhibited communication from the engine manifold to the vacuum chamber, but providing restricted communication in the reverse direction.
Claim 4
Dependent Claim
53 words
The invention of claim 1: wherein said second spring urges said diaphragm to a predetermined position in said housing for a given pressure differential across said diaphragm and the resultant force of said first spring and the throttle return spring urge the plunger against said diaphragm when the throttle lever engages said plunger.
Claim 5
Dependent Claim
23 words
The invention of claim 1: wherein the valve means for regulating communication between the chambers is carried by the plunger and the diaphragm.
Claim 6
Dependent Claim
61 words
The invention of claim 1: wherein the valve means for regulating communication between the chambers is an orifice in said diaphragm which cooperates with a portion of said plunger to permit communication through the orifice when the diaphragm is moved away from engagement with the plunger and to prevent communication through said orifice when the plunger and diaphragm engage one another.