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:
Jul. 25, 1978
Filed:
Apr. 04, 1977
Frederick D Brookes, Northwood, GB;
Jozef T Franek, Chorleywood, GB;
Metal Box Limited, Reading, GB;
Abstract
Apparatus for expanding the mouth of a hollow article, said apparatus comprising a rotary expansion tool and a holding pad reciprocable towards and away from the tool. The rotary expansion tool includes a cage, a plurality of rolls held in equispaced relationship by the cage around an inner race which holds the rolls in rolling engagement with the outer race. Means within the tool cause the rolls to roll within the outer race, each of said rolls having a work portion, extending in an axial direction from the outer race. The work portions enter the mouth of an article pushed into engagement therewith by the pad, to expand the mouth an axial distance determined by the length of a mandrel which serves to guide the article to the rolls. A sleeve shrouds the working surface of the rolls for safety.