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:
Jun. 01, 1993
Filed:
Jul. 07, 1992
James B Vrotacoe, Rochester, NH (US);
Charles D Lyman, Farmington, NH (US);
Heidelberg Harris Inc., Dover, NH (US);
Abstract
A tubular printing blanket (20) has a metal sleeve (42) which is receivable over a blanket cylinder (14) in an offset printing unit (10). The sleeve (42) is expandable diametrically under the influence of pneumatic pressure directed against the inner surface (46) of the sleeve (42), and is movable telescopically over the blanket cylinder (14) when in its expanded condition. The tubular printing blanket (20) has a damping ring (120) for attenuating noise upon expansion of the sleeve (42) under the influence of the pressurized flow of air. The damping ring (120) damps vibrations of the sleeve (42) which are caused by the pressurized flow of air, and which cause noise.