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. 19, 2007
Filed:
Dec. 11, 2002
Guy DE Warrenne Bruce Adams, Stroud, GB;
Guy de Warrenne Bruce Adams, Stroud, GB;
Hewlett-Packard Development Company L.P., Houston, TX (US);
Abstract
A writing implementincludes a sensorand control circuitryso that when the writing implement is brought into close proximity with an input screen, the writing tipof the writing implementis prevented from delivering ink to the input screen. This may be achieved in one embodiment by retracting the writing tip within the body of the writing implement, or by extending a stylus tipbeyond the writing tip. In other embodiments, ink can be prevented from delivered to the input screen by a mechanism which disengages an ink reservoirfrom the writing tipof the writing implementand/or, in the case of a ball-point pen type writing tip, electromagnetscan be arranged to prevent rotation of an ink delivery ball