High pressure blow-off valve protector

Claim 2

A protector for excluding foreign materials from the vent pipe of a high pressure system, said protector comprising an elongated resilient collar having an internal bore for mounting on the outer periphery of said vent pipe, the outer surface of said collar having a frusto-conical configuration tapering downwardly and outwardly at a predetermined angle, a cap having a side wall with an end wall at one end thereof, the opposite end of said cap being open, the inner surface of said side wall being tapered at an angle substantially complementary to the outer surface of said collar for frictionally engaging and compacting said resilient collar to form an airtight connection between said cap and said vent pipe, whereby fluid under pressure in said vent pipe overcomes the frictional gripping action between said collar and said cap to remove said cap from said collar so that the fluid under pressure within the vent pipe is exhausted to atmosphere.

Claim 3

The structure of claim 1 including a desiccant located within said cap adjacent to said end wall and in communication with the interior of the vent pipe for absorbing moisture from the air trapped within the vent pipe when said cap is applied.

Claim 4

The structure of claim 2 including perforated disk means for retaining said desiccant within said cap.

Claim 5

A protector for excluding foreign matter and moisture from the vent pipe of a high pressure system blow-off valve, said protector comprising an elongated resilient collar having a generally cylindrical axial bore, said bore extenDing entirely through said collar and being of a size to be sealed onto the outer periphery of the vent pipe, the outer surface of said collar having a frusto-conical configuration tapering downwardly and outwardly, a cap having an elongated side wall with an end wall at one end thereof, the inner surface of said side wall being tapered at an angle substantially complementary to the outer surface of said collar for frictionally engaging and compacting said resilient collar to form an airtight connection between said cap and the vent pipe, a resilient washer mounted on the open end of said vent pipe and having an outer periphery of a size to engage the inner surface of the side wall of said cap, a perforated disk mounted on said washer, and a desiccant located within said cap adjacent to said end wall and engageable with said perforated disk, whereby downward movement of said cap causes said desiccant to apply pressure to said disk and compress said washer against the end of the vent pipe and said desiccant absorbs moisture from the air trapped within the vent pipe.

Claim 6

A protector for excluding foreign matter and moisture from the vent pipe of a high pressure system blow-off valve, said protector comprising an elongated resilient collar having a generally cylindrical axial bore, said bore extenDing entirely through said collar and being of a size to be sealed onto the outer periphery of the vent pipe, the outer surface of said collar having a frusto-conical configuration tapering downwardly and outwardly, a cap having an elongated side wall with an end wall at one end thereof, the inner surface of said side wall being tapered at an angle substantially complementary to the outer surface of said collar for frictionally engaging and compacting said resilient collar to form an airtight connection between said cap and the vent pipe, a resilient washer mounted on the open end of said vent pipe and having an outer periphery of a size to engage the inner surface of the side wall of said cap, a perforated disk mounted on said washer, and a desiccant located within said cap adjacent to said end wall and engageable with said perforated disk, whereby downward movement of said cap causes said desiccant to apply pressure to said disk and compress said washer against the end of the vent pipe and said desiccant absorbs moisture from the air trapped within the vent pipe.