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:
Feb. 21, 1978
Filed:
Jul. 19, 1976
Danny Leon McMillin, Golden, CO (US);
Larry Mason Dugan, Boulder, CO (US);
Coors Container Company, Golden, CO (US);
Abstract
Apparatus and methods for testing printed metallic can body members for defects by the use of light involving gravity infeed apparatus for locating can body members in separate pockets on a continuously rotating transfer wheel, seating apparatus for seating the can body members in the pockets, testing the exterior surface of the can body member for the presence of printed ink thereon, axially displaceable can body member support apparatus for axial displacement of the can body members relative to the pockets and the transfer wheel to locate a flange portion in sealed association with a resilient deflectable sealing member, application of vacuum to the bottom of the can body member to hold the can body member on the support apparatus until release of the vacuum, application of pressure to and pressurization of the sealing member and the inside of the can body member; location of the pressurized can body member in a zone of florescent light, location of the can body member relative to light detecting apparatus in the light zone to detect any light passing through the walls and through or around the flange portion of the container body member, retracting the can body member from sealed association with the sealing member, first discharging defective can body members into discharge chute apparatus by gravity after release of vacuum, and then unloading acceptable can body members into unloading chute apparatus by gravity after release of vacuum.