Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
103 words
Apparatus comprising a pressurized cable including internal conductors and a cable cover surrounding said conductors and adapted to withstand an internal pneumatic pressure, a pressure tight case, electronic circuitry in said case, said conductors including a section extending in sealed relationship out of said cable cover into the case and being connected to said circuitry, and valve means bypassing said section and connecting said pressurized cable to said case and including both a manual control means to isolate said case from said cable and a check valve means to limit the flow of a pressure medium from said case back into said cable.
Claim 2
Dependent Claim
103 words
Apparatus comprising a pressurized cable including internal conductors and a cable cover surrounding said conductors and adapted to withstand an internal pneumatic pressure, a pressure tight case, electronic circuitry in said case, said conductors including a section extending in sealed relationship out of said cable cover into the case and being connected to said circuitry, and valve means bypassing said section and connecting said pressurized cable to said case and including both a manual control means to isolate said case from said cable and a check valve means to limit the flow of a pressure medium from said case back into said cable.
Claim 3
Dependent Claim
155 words
Apparatus as claimed in claim 1 wherein said valve means includes a valve body provided with a bore extending therethrough, said bore having an enlarged chamber at one end thereof, a member provided with a bore, and fixed in said chamber to confine an inner chamber therein, said bores and inner chamber cooperatively forming a flow passage, a poppet in said inner chamber, said member including a seat protruding towards said poppet and encircling the bore in said member, said poppet including a poppet body and a poppet inset in said poppet body, said inset having a hardness of 50-80 on the Durometer A scale and being adapted to engage said seat, a spring in said inner chamber urging said poppet and thereby said inset against said seat whereby to cut off flow through said flow passage, and cutoff means in said valve body to cut off flow in the bore in said valve body.
Claim 4
Dependent Claim
40 words
Apparatus as claimed in claim 2 wherein said cutoff means includes a rotatable part rotatable about an axis perpendicular to the bore in said valve body and having a diametral bore selectively alignable with the bore in said valve body.
Claim 5
Dependent Claim
21 words
Apparatus as claimed in claim 3 wherein said valve body is of metal and said rotatable part is a fluorocarbon compound.
Claim 6
Dependent Claim
20 words
Apparatus as claimed in claim 4 comprising an indicator external of said valve body and connected to said rotatable part.
Claim 7
Dependent Claim
56 words
Apparatus as claimed in claim 5 comprising a pin extending through said valve body and into said member to lock the latter to said valve body and a retaining ring to hold said rotatable part in said valve body, said valve body being of brass or stainless steel, said pin and ring being of stainless steel.
Claim 8
Dependent Claim
40 words
Apparatus as claimed in claim 2 wherein said poppet body includes a circular skirt at least in part encircling said spring and is provided with a plurality of symmetrically arranged inclined bores arranged in concentric array relative to said skirt.
Claim 9
Dependent Claim
32 words
Apparatus as claimed in claim 2 wherein said valve body is of metal, comprising a primer coating of epoxypolyamide on said valve body and a coating of polyurethane on said primer coating.
Claim 10
Dependent Claim
13 words
Apparatus as claimed in claim 2 wherein said inset is of to fluoroelastomer.
Claim 11
Dependent Claim
14 words
Apparatus as claimed in claim 2 wherein said circuitry is a telephone repeater circuit.
Claim 12
Dependent Claim
23 words
Apparatus as claimed in claim 2 wherein said inset is of fluoroelastomer and has a hardness of 70-80 on the Durometer A scale.
Claim 13
Dependent Claim
25 words
Apparatus as claimed in claim 11 wherein said seat is a circular rim with a thickness in radial direction of 0.005 -0.010 of an inch.