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. 10, 1997
Filed:
Nov. 28, 1994
Applicant:
Inventor:
David P Souza, Fall River, MA (US);
Assignee:
Battenfeld Gloucester Engineering Co., Inc., Gloucester, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05B / ;
U.S. Cl.
CPC ...
36416701 ; 364161 ; 36447414 ; 36447434 ; 493-2 ; 493 34 ;
Abstract
A thermoplastic bag making machine having a sealing bar assembly driven by two separate linear drive units is initialized following full shutdown by traversing the linear drive units at constant velocity against mechanical stops, and then resetting position error signals and traversing the bar a known distance to a home position. This procedure is also useful for single linear drive units, as well as multiple linear drive units that must be coordinated for position and motion. In the case of multiple drive units, procedure for offsetting travel distances off the stop for non-uniformity in stop positions is utilized.