The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 31, 1983
Filed:
Jan. 22, 1981
Robert J Grush, Metairie, LA (US);
Other;
Abstract
Two nested half cylinders, having a concentric axis and closed ends, are pivoted together on aligned pivot pins mounted in the closed ends and on the concentric axis. The nested half cylinders are actuated to pivot 90 degrees oppositely around the concentric axis and aligned pivot pins to close non-compressively around free flowing granular material in a closed cylindrical hoist bucket, thereby saving the additional weight and strength of material and the actuating energy therefor required for compressive loading of hoist buckets having off center or non-concentric axis of pivot. Additionally, the non-compressive loading does not move the granular material nor overflow the closed cylindrical hoist bucket to pollute the environment with dust therefrom.