Extendible stylus
Patent 5889512 Issued on March 30, 1999. Estimated Expiration Date: 
July 24, 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.
July 24, 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 1807444 Extendable writing instrument Cursor key unit for a computer having a mouse function removably mounted on a keyboard section of a base Pocket-size electronic device Digitizer tablet with internally stored wireless stylus Integrating graphics input device Patent #: 5287121 InventorsAssigneeApplicationNo. 506462 filed on 07/24/1995US Classes:345/179, Stylus178/19.01, Writing digitizer stylus401/95, Including means to increase effective length401/117Manually reciprocable sleeveExaminersPrimary: Hjerpe, RichardAssistant: Chang, Kent Attorney, Agent or FirmInternational ClassG09G 005/00AbstractAn extendible stylus includes a body and an extension telescopically engaged with the body. The stylus may be extended to an open position and collapsed to a closed position, where opposite ends of the stylus are farther apart in the open position. A first, internal detent mechanism of the stylus retains the stylus in the open position. A stop mechanism preferably holds the stylus in the closed position. A receptacle, such as a hole in a case of a portable computer, is engageable with the stylus such that a second, external detent mechanism is provided between the case and the stylus to retain the stylus in engagement with the case. The case is provided with a member which engages a groove positioned on one end of the stylus to form the second detent mechanism. When the stylus is being engaged with the case, a force to overcome the first detent mechanism is greater than a force to overcome the second detent mechanism so that the stylus can be engaged with the case before the stylus is moved to the closed position. When the stylus is being disengaged from the case, the force to overcome the first detent mechanism is less than the force to overcome the second detent mechanism, so that the stylus can be extended to its open position before it is removed from the case.Other References
Field of SearchStylusLight pen for CRT display CRT having tracking capability Light pen for fluid matrix display panel Light pen for controlling plural light-emitting display elements (e.g., LED, lamps) DISPLAY PERIPHERAL INTERFACE INPUT DEVICE Writing digitizer stylus Pressure stylus Including means to increase effective length Manually reciprocable sleeve | |
