Syringe pump

Details Syringe pump Syringe pump

1997-10-29

1999-04-27

Richter, Sheldon J.

Expansible chamber devices

Rectilinearly moving working member and coaxial or parallel...

92136, B67D 508

Patent

active

058968040

ABSTRACT:
A compact syringe pump having a high quantitative accuracy and a high durability is provided. The syringe pump comprises a motor, a rotating cylinder, a moving element, a guide means for introducing the moving element in an axial direction of the rotating cylinder, a piston rod disposed on the moving element and a cylinder within which the piston rod moves, wherein the guide means comprises a guide pin extending through the moving element in the axial direction of the rotating cylinder and a pair of upper supporting member and lower supporting member for supporting both ends of the guide pin so that the guide pin becomes in parallel to the axial direction of the rotating cylinder, the upper supporting member rotatably supports the rotating cylinder at an upper end portion of the rotating cylinder and the lower supporting member rotatably supports the rotating cylinder at an upper surface portion of the bottom portion of the rotating cylinder, thereby preventing the rotating cylinder from swinging.

REFERENCES:
patent: 2936737 (1960-05-01), Miller
patent: 3411409 (1968-11-01), Bunyard
patent: 3771918 (1973-11-01), Winter
patent: 4475666 (1984-10-01), Bilbrey et al.

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