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US 12,188,460 B2Granted
Piston coupler for a reciprocating pump
AssigneeWagner Spray Tech Corporation
InventorsDaniel R. Zientara, Joseph W. Kieffer
Life of this patent
Estimating the term…
Abstract
A liquid delivery system includes a reciprocating drive and a liquid cylinder comprising a liquid piston, operably driven by the reciprocating drive, to pump a liquid along a flow path to a liquid applicator. The liquid delivery system includes a coupler configured to couple the liquid piston to the reciprocating drive. The coupler includes a plurality of collar elements and a biasing member configured to apply a biasing force on the plurality of collar elements to retain the collar elements in a position that forms a collar that couples the liquid piston to the reciprocating drive.
Claims18
A liquid delivery system comprising:
- a reciprocating drive;
- a liquid cylinder comprising a liquid piston, operably driven by the reciprocating drive, to pump a liquid along a flow path to a liquid applicator;
- and
- a coupler configured to couple the liquid piston to the reciprocating drive, the coupler comprising:
- a plurality of collar elements;
- and
- a biasing member configured to apply a biasing force on the plurality of collar elements to retain the plurality of collar elements in a position that forms a collar that couples the liquid piston to the reciprocating drive, wherein the biasing member comprises an elastic member;
- and
- a sheath configured to overlay the plurality of collar elements and the biasing member, wherein at least one collar element, of the plurality of collar elements, comprises a channel configured to receive the elastic member, and wherein the sheath is movable from a first position in which the sheath overlays the plurality of collar elements and the biasing member to a second position in which the sheath is spaced apart from the plurality of collar elements while the biasing member remains disposed in the channel.
6 more elements
A liquid delivery system coupler comprising:
- a plurality of collar elements;
- a biasing member configured to apply a biasing force on the plurality of collar elements to retain the plurality of collar elements in a position that forms a collar that couples a liquid piston, disposed in a liquid cylinder of a liquid delivery system, to a reciprocating drive configured to pump a liquid along a flow path to a liquid applicator, wherein the biasing member comprises an O-ring;
- and
- a sheath configured to overlay the plurality of collar elements and the biasing member.
1 more element
A liquid delivery system coupler comprising:
- a plurality of collar elements;
- a biasing member configured to apply a biasing force on the plurality of collar elements to retain the plurality of collar elements in a position that forms a collar that couples a liquid piston, disposed in a liquid cylinder of a liquid delivery system, to a reciprocating drive configured to pump a liquid along a flow path to a liquid applicator;
- and
- a sheath configured to overlay the plurality of collar elements and the biasing member wherein the biasing member comprises an elastic member, and at least one collar elements, of the plurality of collar elements, comprises a channel configured to receive the elastic member, and wherein a thickness of the elastic member is larger than a depth of the channel, such that when the elastic member is disposed in the channel, a portion of the elastic member protrudes out of the channel.
1 more element
A liquid delivery system comprising:
- a reciprocating drive comprising:
- a source of hydraulic fluid;
- a hydraulic cylinder fluidically coupled to the source of hydraulic fluid and having a hydraulic piston that reciprocates in the hydraulic cylinder;
- and
- a rod connected to the hydraulic piston and extending out of the hydraulic cylinder;
- a liquid cylinder comprising a liquid piston, operably driven by the reciprocating drive, to pump a liquid along a flow path to a liquid applicator;
- and
- a coupler configured to couple the liquid piston to the reciprocating drive, the coupler comprising:
- a plurality of collar elements;
- a biasing member configured to apply a biasing force on the plurality of collar elements to retain the plurality of collar elements in a position that forms a collar that couples the liquid piston to the reciprocating drive;
- and
- a sheath configured to overlay the plurality of collar elements and the biasing member,
- wherein the collar couples the liquid piston to the rod, and
- wherein the biasing member has an inner diameter that is less than or equal to an outside diameter of the rod of the reciprocating drive.
11 more elements
A liquid delivery system comprising:
- a reciprocating drive;
- a liquid cylinder comprising a liquid piston, operably driven by the reciprocating drive, to pump a liquid along a flow path to a liquid applicator;
- and
- a coupler configured to couple the liquid piston to the reciprocating drive, the coupler comprising:
- a plurality of collar elements;
- and
- a biasing member configured to apply a biasing force on the plurality of collar elements to retain the plurality of collar elements in a position that forms a collar that couples the liquid piston to the reciprocating drive;
- and
- a sheath configured to overlay the plurality of collar elements and the biasing member, wherein the sheath is movable from a first position in which the sheath overlays the plurality of collar elements and the biasing member to a second position in which the sheath is spaced apart from the collar elements while the biasing member remains in a position that applies the biasing force on the plurality of collar elements to retain the plurality of collar elements in the position that forms the collar.
6 more elements
Dependencies are inferred from the claim text.