Coolant system for piston and liner of reciprocating pumps

Details Coolant system for piston and liner of reciprocating pumps Coolant system for piston and liner of reciprocating pumps

2007-05-22

2007-05-22

Kershteyn, Igor (Department: 3745)

Expansible chamber devices

With encompassing heat exchange modifying space or jacket

C092S16500R

Reexamination Certificate

active

10862216

ABSTRACT:
A reciprocating pump assembly includes piston rod that is movable and reciprocates in order to pump a fluid. The piston rod has a piston portion at an end that stokes within a piston chamber. The pump assembly also includes a piston rod sleeve that houses the piston rod. The piston rod sleeve does not reciprocate with the piston rod. Thus, the piston rod sleeve remains stationary. The piston rod sleeve defines and annulus between the piston rod and the piston rod sleeve. The pump assembly has a fluid line that leads into the annulus. The fluid line delivers coolant to the annulus. The pump assembly also includes a flow passage. The flow passage has an inlet in fluid communication with the annulus for receiving the coolant. The passage also has an outlet in fluid communication with the piston chamber for delivering the coolant.

REFERENCES:
patent: 1537851 (1925-05-01), Maingault
patent: 2250419 (1941-07-01), Johnston et al.
patent: 2439958 (1948-04-01), Anderson
patent: 3394633 (1968-07-01), Payne et al.
patent: 3782123 (1974-01-01), Muschalek, Jr.
patent: 6315537 (2001-11-01), Helbing et al.
patent: 2004/0244576 (2004-12-01), Kugelev et al.
patent: 235939 (1925-06-01), None

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