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:
Mar. 09, 1993
Filed:
May. 26, 1992
Alessandro Lunazzi, Bologna, IT;
Mikron S.p.A. Bologna, Bologna, IT;
Abstract
In a hobbing machine of the type with a pair of coaxial heads driving a hob supported between them, one of which capable of movement toward and away from the other and one affording a key positioned to engage a slot associated with the hob, the slot is incorporated directly into the hob, and each head carries an axially hollow alignment spigot with a stop collar, matched to and insertable in the axial bore of the hob to a depth determined by interaction of the relative collar with the end of the hob; equipping one of the heads with a coaxial tension rod insertable through the bore of the hob, and the other head with a clamping mechanism capable of gripping and tensioning the rod, the necessary rigidity is obtained without the use of an arbor.