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. 17, 2002
Filed:
Nov. 20, 2001
Edward R. Moynihan, Lebanon, NH (US);
David W. Gailus, Merrimack, NH (US);
Robert G. Palifka, Orford, NH (US);
Paul A. Hoisington, Norwich, VT (US);
Nathan P. Hine, South Strafford, VT (US);
David Adams-Brady, Meriden, NH (US);
Melvin L. Biggs, Norwich, VT (US);
Steven H. Barss, Wilmot Flat, NH (US);
Diane Mackay, Corinth, VT (US);
Bruce A. Paulson, Newport, NH (US);
Spectra, Inc., Keene, NH (US);
Abstract
In the embodiments of the simplified ink jet head described in the specification, a carbon body is formed with ink passages, such as internal passages extending through a carbon plate, pressure chambers on one side of a carbon plate, flowthrough passages on the other side of the same plate and ink supply passages, and a piezoelectric plate is affixed to the pressure chamber side of the carbon plate by a thin layer of epoxy adhesive. In one alternative embodiment, an ink jet head assembly contains two separate carbon pressure chamber plates, a carbon manifold plate and a carbon collar to retain the carbon plates in an assembly.