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US 6,510,959 B1Granted
Center opening treatment tank for use with metal tank flanges
AssigneeUnited States Filter Corporation
InventorJohn Van Newenhizen
Life of this patent
Estimating the term…
Abstract
A treatment tank for a water conditioning apparatus has a tank head with a wall, a rim defining a through hole in the wall and a tank ring fixed to the rim. The tank ring is coaxial with the tank head and extends generally axially. The tank also has a generally cylindrical flange defining a nipple portion with a peripheral wall that has a lower edge. The flange also has a shoulder extending radially from the nipple portion with a top surface and an outer peripheral wall extending downward from the top surface. A fastener assembly is engageable on the top surface of the shoulder for securing the flange on the tank head through contact between the fastener assembly and the tank ring.
Claims19
A treatment tank for a water conditioning apparatus, comprising:
- a tank head having a wall, a rim defining a through hole in said wall, and a tank ring having a bottom, a top and being fixed to said rim, said tank ring being coaxial with said tank head and extending generally axially;
- a generally cylindrical flange defining a nipple portion having a peripheral wall and a shoulder extending radially from said nipple portion, and having a top surface and an outer peripheral wall extending downward from said top surface;
- and
- a fastener assembly engageable on said top surface of said shoulder for securing said flange on said tank head through contact between said fastener assembly and said tank ring;
- wherein said fastener assembly includes at least one hold down plate configured and disposed above said tank ring so that said flange is secured against said bottom of said tank ring by tightening said hold down plate against said top of said tank ring;
- wherein said generally cylindrical flange includes a ledge extending radially from a base of said shoulder, and configured to sandwich said tank ring between said at least one hold down plate and said ledge.
3 more elements
A treatment tank for a water conditioning apparatus, comprising:
- a tank head having a wall with an interior surface, a rim defining a through hole in said wall, and a tank ring having a top and a bottom and being coaxial with said tank head and extending generally axially;
- a generally cylindrical flange defining a nipple portion having a peripheral wall, and a shoulder extending radially from said nipple portion and having a top surface and an outer peripheral wall extending generally parallel to said tank ring so that said outer peripheral wall matingly registers with said tank ring;
- a liner disposed against said interior surface of said wall of said tank head and having an edge defining an opening, said edge being configured and disposed on said flange for forming a water tight seal between said flange and said liner without adhering or welding said liner to said flange;
- and
- a fastener assembly engageable on said top surface of said shoulder for securing said flange on said tank head through contact between said fastener assembly and said tank ring;
- said fastener assembly further includes at least one hold down plate configured and disposed above said tank ring so that said flange is secured against said bottom of said tank ring by tightening said hold down plate against said top of said tank ring;
- said hold down plate further defines a through hole configured and disposed so that a threaded fastener having a shank dimensioned to pass through said through hole matingly engages a threaded bore defined by said flange;
- and
- said generally cylindrical flange includes a ledge extending radially from a base of said shoulder, and configured to sandwich said tank ring between said at least one hold down plate and said ledge.
6 more elements
A treatment tank for a water conditioning apparatus, comprising:
- a tank head having a wall with an interior surface, a rim defining a through hole in said wall, and a tank ring being coaxial with said tank head and extending generally axially, said tank ring having a top and a bottom;
- a generally cylindrical flange defining a nipple portion having a peripheral wall, and a shoulder extending radially from said nipple portion and having a top surface, an outer peripheral wall extending generally parallel to said tank ring and a ledge radially extending from said outer peripheral wall, said ledge being configured and disposed to engage said bottom of said tank ring;
- a liner disposed against said interior surface of said wall of said tank head and having a portion disposed along said ledge;
- a fastener assembly engageable on said top surface of said shoulder for securing said flange on said tank head through contact between said fastener assembly and said top of said tank ring;
- an annular flat gasket configured and disposed between said tank ring and said liner so that tightening of said fastener assembly clamps said gasket and said liner between said bottom of said tank ring and said ledge for forming a water tight seal;
- said fastener assembly further includes at least one hold down plate configured and disposed above said tank ring so that said flange is secured against said bottom of said tank ring by tightening said hold down plate against said top of said tank ring;
- and
- said ledge is configured to sandwich said tank ring between said at least one hold down plate and said ledge.
5 more elements
Dependencies are inferred from the claim text.