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:
Sep. 08, 1998
Filed:
Apr. 06, 1995
Brian N Drifka, Pewaukee, WI (US);
Bruce A Cincotta, Wauwatosa, WI (US);
Arthur L Thomas, Milwaukee, WI (US);
Hydro-Thermal Corporation, Waukesha, WI (US);
Abstract
Portable metal drum openers allow the use of a cutting head with a relatively small diameter so that most metal drum covers can be removed without having to beat down or remove bungs in the cover. The cutting head is spring mounted so that the small diameter cutting head will not slip or stall when encountering a kink in the chime. The cutting head is tilted downward in the direction of cutting so that the cutting head would tend to move downward along the chime when making the cut, however, the cutting head is physically restrained from moving downward past a selected chime cutting height. The selected chime cutting height is preferably adjusted by adjusting the position of a shaft collar along threads on a cutting shaft that projects perpendicularly from the cutting head. It is preferred that the drum opener be driven either manually, or by an electric DC motor.