Patent · US Active

Injection molding system having a digital displacement pump

US8641399B2 · kind B2 · utility

87Cited by

11References

19Claims

0Family size

Assignee

Husky Injection Molding Systems Ltd. · CA

Inventors

Srdjan Mucibabic · Barrie, CA
Max Changchun Huang · Brampton, CA

Key dates

Filing date	Nov 11, 2010
Grant date	Feb 4, 2014
Priority date	—
Expiry date	Nov 11, 2030

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B1/053
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Injection molding system (20, 220, 320, 420) having hydraulic circuit (50, 250, 350, 450) for motivating hydraulic actuator (36, 38) comprising: pump motor (52); and digital displacement pump (54, 354A, 354B, 454A, 454B) having: piston assemblies (102A, 102B, 102C, 102D) actuatable by pump motor (52), piston assembly including: pair of inlet and outlets operable to be individually opened and closed at selective rate independently of actuation of each piston assembly; at least one hydraulic actuator (36, 38) operably coupled on each of rod side (64, 66) and cylinder side (58, 74) to first subset of the plurality of piston assemblies (102B, 102D) and second subset of the plurality of piston assemblies (102A, 102C), respectively.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.