Title: Vacuum sequencing system with weight controlled material draw cycle

Abstract: A weight sensitive arrangement for controlling the material draw cycle of a vacuum sequencing system based on the weight of material delivered to a pellet receiver included in the system. The material is drawn by a vacuum into the receiver under the control of a dump valve. The receiver deflects downwardly when loaded and is equipped with a U-shaped deflection beam having an upper arm that deflects in proportion to the receiver deflection. A screw carried on the upper arm of the beam contacts a microswitch when the receiver is loaded to a preselected weight. The microswitch then activates the dump valve to interrupt the vacuum, thereby terminating the material draw cycle and effecting discharge of the batch of material in the pellet receiver.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Allison, Robert (Sabetha, KS)

Application Number: 06/189673
Filing Date: 1980-09-22
Publication_date: 1983-04-12
Assignee: MAC EQUIPMENT INC

Primary Class(es): 406/23 406/28, 222/134, 222/55, 406/170, 222/56, 222/136
Other Classes: B65G53/60; B65G53/66; B65G53/34; B65G53/66
US Patent Ref:

3309146	March, 1967	Russell	222/134	Method of transporting material and device therefor
3844446	October, 1974	Solt	406/33	SYSTEM FOR CONVEYING SOLID PARTICULATE MATERIALS
3944118	March, 1976	Trill	222/205	Thermoplastic resin pellet ratio loader
3989308	November, 1976	Zimmermann et al.	406/23	Weighing apparatus for pneumatic conveying installations

Other Refs: Other References: "Dillon Force Control Switch", Catalog J1-5, May 1974.

Primary Examiner: Marmor, Charles A.
Assistant Examiner:
Attorney: Kokjer, Kircher, Bradley, Wharton, Bowman & Johnson

Claims: