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:
Oct. 16, 2012
Filed:
Jun. 03, 2009
Kia Silverbrook, Balmain, AU;
Paul Lapstun, Balmain, AU;
Matthew John Underwood, Balmain, AU;
Robert John Brice, Balmain, AU;
Zsolt Szarka-kovacs, Balmain, AU;
Kia Silverbrook, Balmain, AU;
Paul Lapstun, Balmain, AU;
Matthew John Underwood, Balmain, AU;
Robert John Brice, Balmain, AU;
Zsolt Szarka-Kovacs, Balmain, AU;
Silverbrook Research Pty Ltd, Balmain, New South Wales, AU;
Abstract
An electronic pen comprises a user-replaceable cartridge having a nib, a force sensor for sensing a nib force transmitted axially through the cartridge from the nib and a retraction mechanism for retracting the cartridge. The retraction mechanism comprises a barrel adapted for seating the cartridge in either an extended position or a retracted position, and a first biasing mechanism for biasing the cartridge towards the extended or retracted positions. A second biasing mechanism biases the barrel towards engagement with the force sensor.