Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
247 words
An automatic air inlet control for stoves and the like combustion devices having a combustion air inlet and a discharge outlet thereon, comprising, a. an elongated tubular member defining an air flow passage therethrough having an inlet at one end and at outlet at the opposite end, b. connecting means for connecting the outlet end of said tubular member to said stove about the combustion air inlet thereon to pass combustion air to the combustion air inlet for said stove, c. fulcrum means connected to the lower section of said tubular member having, a pivot section thereon extending a predetermined spaced distance forward of the plane of the inlet end of said tubular member, d. damper assembly means including, a cover plate having a diameter greater than the diameter of the inlet end of said tubular member, and counterweight balancing means operatively connected to the cover plate, e. said damper assembly means pivotally connected to said pivot section of the fulcrum means to permit said damper assembly means to pivot from open to closed position relative the inlet end of the tubular member as a function of the increase and decrease of pressure in the combustion device, and said damper assembly means disposed to provide a predetermined minimum air flow through said automatic air inlet control in the closed position, and f. governor means connected adjacent the inlet end of the tubular member at the upper end thereof for limiting the opening movement of said damper assembly.
Claim 2
Dependent Claim
247 words
An automatic air inlet control for stoves and the like combustion devices having a combustion air inlet and a discharge outlet thereon, comprising, a. an elongated tubular member defining an air flow passage therethrough having an inlet at one end and at outlet at the opposite end, b. connecting means for connecting the outlet end of said tubular member to said stove about the combustion air inlet thereon to pass combustion air to the combustion air inlet for said stove, c. fulcrum means connected to the lower section of said tubular member having, a pivot section thereon extending a predetermined spaced distance forward of the plane of the inlet end of said tubular member, d. damper assembly means including, a cover plate having a diameter greater than the diameter of the inlet end of said tubular member, and counterweight balancing means operatively connected to the cover plate, e. said damper assembly means pivotally connected to said pivot section of the fulcrum means to permit said damper assembly means to pivot from open to closed position relative the inlet end of the tubular member as a function of the increase and decrease of pressure in the combustion device, and said damper assembly means disposed to provide a predetermined minimum air flow through said automatic air inlet control in the closed position, and f. governor means connected adjacent the inlet end of the tubular member at the upper end thereof for limiting the opening movement of said damper assembly.
Claim 3
Dependent Claim
66 words
In the automatic air inlet control as claimed in claim 1 including at least one adjustable weight means operatively connected to the counterweight balancing assembly to vary the center of gravity of said damper assembly whereby the amount of force required to move the damper assembly to closed position can be increased and decreased by varying the various weight means connected to the counterweight balancing assembly.
Claim 4
Dependent Claim
91 words
In an automatic draft control as claimed in claim 1 wherein, a. the lower end of said cover plate is formed with a knife edge section, b. said cover plate having the knife edge section disposed to rest in said pivot section of the fulcrum means for pivotally mounting the damper assembly means relative the inlet end of the tubular member, and c. means to adjustably position the cover plate to adjust the predetermined clearance between the inner face of the cover plate and the inlet end of the tubular member.
Claim 5
Dependent Claim
105 words
In an automatic air inlet control as claimed in claim 1 wherein, a. said fulcrum means is connected to the tubular member transverse to the longitudinal axis thereof, and b. the governor means is connected to the upper end of the tubular member in alignment but diametrically opposed relative the fulcrum means and in the longitudinal axis of the tubular member, c. and the damper assembly is disposed to fit between the fulcrum means and the governor means so that the cover plate thereon can move towards and away from the inlet end of the tubular member from open to closed position and vice versa.
Claim 6
Dependent Claim
46 words
In an automatic air inlet control as claimed in claim 4 including, threaded means for adjusting the end of the cover plate remote from the pivoted end to regulate the clearance between the inner face of the cover plate and the end of the tubular member.
Claim 7
Dependent Claim
73 words
In an automatic air inlet control as claimed in claim 1 wherein the cover plate has a raised inwardly extending section thereon remote from the pivotally connected end of the damper assembly means, said raised section adapted to contact the inlet end of the tubular member for operative association with the pivot section of the fulcrum means to regulate the predetermined minimum flow when the damper assembly means is in the closed position.