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:
Apr. 07, 2015
Filed:
Jan. 10, 2011
James E. Usowicz, Webster, MA (US);
Tony A. Lin, Ashland, MA (US);
Joshua A. Burnett, Taunton, MA (US);
Marc Lemelin, Douglas, MA (US);
James E. Usowicz, Webster, MA (US);
Tony A. Lin, Ashland, MA (US);
Joshua A. Burnett, Taunton, MA (US);
Marc Lemelin, Douglas, MA (US);
Waters Technologies Corporation, Milford, MA (US);
Abstract
Described are techniques for force sensing. A computing device is configured to have a desired force setting. A first vertical position of a needle is determined using the computer device. A control signal is sent from the computing device to a positioning device. In response to the control signal, the needle is positioned at the first vertical position. When in the first vertical position, surfaces of a tip of the needle are in contact with surfaces of an opening of a sealing member and positioning the needle causes application of a force at surfaces of the opening in contact with surfaces of the tip of the needle. In response to application of the force, a spring is compressed a distance that is proportional to the force. The force is measured using a force sensor.