Pressure sensitive element and a stylus pen with pressure sensitive function
Patent 5633471 Issued on May 27, 1997. Estimated Expiration Date: 
February 22, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 22, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3528295 3621720 Pressure-sensitive writing stylus Data input pen for Signature Verification Three-axis force measurement stylus Tactile sensing transducer Signature verification apparatus and method utilizing relative angle measurements Patent #: 5422959 InventorAssigneeApplicationNo. 392307 filed on 02/22/1995US Classes:73/865.4, ANALYZING BODILY MOVEMENT (E.G., SKILLS OR KINETICS OF HANDWRITING)178/19.04Pressure stylusExaminersPrimary: Dougherty, Elizabeth L.Assistant: Biegel, Ronald L. Attorney, Agent or FirmForeign Patent References
International ClassG01L 005/00Foreign Application Priority Data1995-01-13 JPAbstractA pressure sensitive element is arranged around a core unit along the longitudinal axis of a stylus pen (10) to detect the pressure applied to the core unit. The pressure sensitive element comprises a pressure transmittable member (30b), in an annular plate shape, for transmitting the pressure applied in the axial direction of the pressure sensitive element, a pressure sensitive member (28), in an annular plate shape, arranged coaxially in parallel to the pressure transmittable member, and a support member (18b) for supporting the pressure sensitive member between the support member against the applied pressure, arranged coaxially in parallel to the pressure transmittable member. The core unit is a push and thrust type writing unit (14). | |
