Positive displacement piston pump

Details Positive displacement piston pump Positive displacement piston pump

1990-02-28

1992-10-27

Smith, Leonard E.

Bookbinding: process and apparatus

Apparatus

Book working apparatus

92 13, F04B 706

Patent

active

RE0341142

ABSTRACT:
A positive displacement piston pump includes a cylinder having a working end, an inlet port, an outlet port and a working chamber bounded by the outlet port and the working end; a piston rotatably and reciprocably movable in the cylinder between a retracted position and an extended position, the piston including a free end having a recessed section alternately in fluid communication with the inlet port and the outlet port; a drive motor rotatably and reciprocably driving the piston in the cylinder; a yoke and ball and socket joint pivotally connecting the piston to the drive motor; a base having an upper surface with an elongated slot below the pivot point of the piston and an arcuate slot adjacent the opposite end of the cylinder; and first and second pivot pins secured to a swivel plate which is, in turn, secured to the cylinder through a vertical column, whereby the recessed section is positioned entirely in the working chamber when the piston is at the end of its pressure stroke, regardless of the angle between the piston and the drive motor.

REFERENCES:
patent: 2896459 (1959-07-01), Jemison et al.
patent: 2964234 (1960-12-01), Loomis, III
patent: 3168872 (1965-02-01), Pinkerton
patent: 3257953 (1966-06-01), Pinkerton
patent: 4008003 (1977-02-01), Pinkerton
patent: 4575317 (1986-03-01), Linder

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