Pitless well adapter

Claim 2

In a pitless well adapter carried by a well casing at an opening spaced below the upper end of the casing, an outer adapter part having a marginal portion and a chamber-defining outwardly offset portion, means anchoring said adapter part to said well casing with said offset portion registering with said casing opening and said marginal portion confronting the well casing around said casing opening, said offset portion having a liquid delivery passage, a pair of spaced endless gaskets interposed between the marginal portion of said adapter part and said well casing around said casing opening to define and endless channel, said endless channel facing said well casing, said gaskets being compressed between said adapter part and said well casing to form a seal around said casing opening, said outer part having a passage therein communicating with said endless channel and said liquid delivery passage.

Claim 3

The construction defined in claim 1, and spacer means separating said gaskets.

Claim 4

The construction defined in claim 1, wherein said gaskets are interconnected by spaced integral ribs of thickness less than the thickness of the gaskets in compression so as not to block said endless channel.

Claim 5

4. The construction defined in claim 1, wherein said oFfset portion has a lower wall projecting outwardly from the lower marginal portion of said adapter part, said liquid delivery passage extending through said lower wall and said communicating passage being formed in said lower wall.

Claim 6

In combination, a well casing having an opening spaced below its upper end; and outer adapter part; means anchoring said outer adapter part to said casing to span said casing opening; a pair of spaced endless gasket rings compressed between said outer adapter part and said casing around said casing opening to define an endless channel; said endless channel facing said well casing; said outer adapter part having a liquid passage; a passage connecting said endless channel to said liquid passage; an inner adapter part within said casing and having a liquid passage; a drop pipe carried by said inner adapter part and connected to the liquid passage of said inner adapter part; and a tubular member carried by one adapter part in communication with the liquid passage of said one adapter part and means providing a seal between said tubular member and the liquid passage of the other adapter part; said pair of spaced endless gasket rings, tubular member and seal means forming the sole sealing contact between said inner adapter part, outer adapter part, casing and tubular member.

Claim 7

In combination, a well casing having an opening spaced below its upper end; and outer adapter part; means anchoring said outer adapter part to said casing to span said casing opening; a pair of spaced endless gasket rings compressed between said outer adapter part and said casing around said casing opening to define an endless channel; said endless channel facing said well casing; said outer adapter part having a liquid passage; a passage connecting said endless channel to said liquid passage; an inner adapter part within said casing and having a liquid passage; a drop pipe carried by said inner adapter part and connected to the liquid passage of said inner adapter part; and a tubular member carried by one adapter part in communication with the liquid passage of said one adapter part and means providing a seal between said tubular member and the liquid passage of the other adapter part; said pair of spaced endless gasket rings, tubular member and seal means forming the sole sealing contact between said inner adapter part, outer adapter part, casing and tubular member.

Claim 8

The combination defined in claim 5, wherein said gasket rings are interconnected by relatively thin flexible spacer means having a thickness less than the thickness of said gasket rings in compression so as not to block said endless channel.

Claim 9

The combination defined in claim 6, wherein said spacer means are integral with said gasket rings.

Claim 10

The combination defined in claim 5, wherein said outer adapter part has a projection extending into said casing opening for supporting engagement with said well casing; and said inner adapter part engages and is supported by said outer adapter part.

Claim 11

The combination defined in claim 5, wherein said out other adapter part has a circumferential groove receiving said sealing means. 10 The combination defined in claim 5, and an elongated member projecting above said inner adapter part and a member carried by said elongated member and engaging the inner surface of said casing in substantially aligned relation to the liquid passage of said outer adapter part.