发明名称 |
RECIPROCATING PUMPS AND RELATED METHODS |
摘要 |
Reciprocating fluid pumps include a pump body including a cavity therein, a plunger located at least partially within the cavity, and a shift canister assembly disposed within the cavity. The shift canister assembly includes a sealing surface for forming a seal against the pump body. An area covered by the seal between the sealing surface and the pump body is less than about 75% of an outer cross-sectional area of the shift canister assembly. The shift canister assembly may include a shift canister and a shift canister cap attached thereto, the shift canister cap comprising the sealing surface. Reciprocating fluid pumps include a shift canister, a shift piston at least partially disposed within the shift canister, and a shift canister cap attached to the shift canister on a longitudinal end of the shift canister opposite the shift piston. Methods include forming such reciprocating pumps. |
申请公布号 |
US2016281692(A1) |
申请公布日期 |
2016.09.29 |
申请号 |
US201615174924 |
申请日期 |
2016.06.06 |
申请人 |
Graco Fluid Handling (A) Inc. |
发明人 |
Simmons John M.;Simmons Tom M.;Kingsford Kenji Allen;Simmons David M. |
分类号 |
F04B9/131;F04B53/16;F04B53/10;F04B53/14;F04B19/22;F04B43/02 |
主分类号 |
F04B9/131 |
代理机构 |
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代理人 |
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主权项 |
1. A reciprocating pump for pumping a subject fluid, the reciprocating pump comprising:
a pump body including at least one cavity therein; at least one plunger located at least partially within the at least one cavity of the pump body, the at least one plunger configured to expand and compress in a reciprocating action to pump subject fluid through at least one subject fluid chamber within the at least one cavity during operation of the reciprocating pump; and at least one shift canister assembly disposed within the at least one cavity, the at least one shift canister assembly including a sealing surface configured to contact the pump body to form a seal between the sealing surface and the pump body during operation of the reciprocating pump, wherein an area encompassed by a periphery of an area of contact between the sealing surface and the pump body, when sealed during operation of the reciprocating pump, is less than about 75% of an area encompassed by a periphery of a cross-section of the at least one shift canister assembly taken in a plane at least substantially perpendicular to an intended direction of movement of the at least one shift canister assembly during operation. |
地址 |
Kamas UT US |