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    • 2. 发明授权
    • Reciprocating pumps and related methods
    • 往复泵及相关方法
    • US09360000B2
    • 2016-06-07
    • US13420978
    • 2012-03-15
    • John M. SimmonsTom M. SimmonsDavid M. SimmonsKenji Allen Kingsford
    • John M. SimmonsTom M. SimmonsDavid M. SimmonsKenji Allen Kingsford
    • F04B23/02
    • F04B9/131F04B19/22F04B23/028F04B43/02F04B53/10F04B53/14F04B53/16Y10T29/49236
    • 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.
    • 往复流体泵包括在其中包括空腔的泵体,至少部分地位于空腔内的柱塞和设置在空腔内的换档罐组件。 换档罐组件包括用于形成对泵体的密封的密封表面。 由密封表面和泵体之间的密封件覆盖的区域小于换挡罐组件的外横截面积的约75%。 换档罐组件可以包括移位罐和附接到其上的换档罐盖,换档罐盖包括密封表面。 往复流体泵包括换挡罐,至少部分地设置在换档罐内的换档活塞,以及在换挡罐的与换档活塞相对的纵向端部附接到换挡罐的换档罐盖。 方法包括形成这种往复泵。