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A hinge rotates a cover pivotably connected to a device housing from a closed position to an open position. A shaft is connected to the cover. The shaft and cover have a common axis of rotation. A spring having a top end and a bottom end is affixed at its bottom end to the device housing. A line has

A hinge rotates a cover pivotably connected to a device housing from a closed position to an open position. A shaft is connected to the cover. The shaft and cover have a common axis of rotation. A spring having a top end and a bottom end is affixed at its bottom end to the device housing. A line has a first end connected to the top end of the spring and a second end wound onto the shaft. When the cover is in the closed position, the spring is in an extended state. Upon release of the cover from the closed position, the spring force returns the spring toward a neutral state, thereby unwinding the line from the shaft and causing rotation of the cover to the open position.

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A hinge rotates a cover pivotably connected to a device housing from a closed position to an open position. A shaft is connected to the cover. The shaft and cover have a common axis of rotation. A spring having a top end and a bottom end is affixed at its bottom end to the device housing. A line has

A hinge rotates a cover pivotably connected to a device housing from a closed position to an open position. A shaft is connected to the cover. The shaft and cover have a common axis of rotation. A spring having a top end and a bottom end is affixed at its bottom end to the device housing. A line has a first end connected to the top end of the spring and a second end wound onto the shaft. When the cover is in the closed position, the spring is in an extended state. Upon release of the cover from the closed position, the spring force returns the spring toward a neutral state, thereby unwinding the line from the shaft and causing rotation of the cover to the open position. Symposium Proceedings, Nov. 1991, pp. 13-26. Malan, G. et al., "DDS as a Mach 3.0 Application," USENIX Assoc.--Mach Symposium Proceedings, Nov. 1991, pp. 27-40. Rashid, R., "A Catalyst for Open Systems," Datamation, May 15, 1988, p. 32-33. Guedes, Paulo, "O-O Interfaces in the Mach 3.0 Multi-Server System," IEEE 1991. Rashid, R., "Mach: A Foundation for Open Systems." Carnegie Mellon University, IEEE 1989. Foley, M.J., "Taligent, IBM draw closer," PC Week, Feb. 21, 1994, vol. 11, No. 7, p. 8. Franz, M., "Emulating an Operating System on Top of Another," 1993 by John Wiley & Sons. Ltd. IBM C/C++TOOLS: `User Interface Class Library Reference` May 1993, IBM Part No. 61G1179, DENMARK See p. 464, lines 1-11. Petzold, Charles, "Intro to OS/2 Function Calls," PC Magazine, vol. 6, No. 18, Oct. 27, 1987, NY, US, pp. 375-380. Breisacher, Lee, "Smalltalk/V Presentation Mgr.," OS/2 NOTEBOOK: The Best of IBM Personal Systems Developer; (Dick Conklin; General Editor), 1990, Microsoft Press, Redmond, US, pp. 226-232. IBM C/C++TOOLS, "Programming Guide," Mar. 1993, IBM Part No. G1G1181, DENMARK, See p. 35, line 1; see p. 438, lines 1-6. Bernabeau-Auban et al., "Clouds--A Distributed Object-Based Operating System Architecture and Kernel Implementation," New Directions for Unix Proc. Autumn 1988 EUUG Conf. Oct. 3, 1988, Cascais, Portugal, pp. 25-37. Daponte et al., "Object-Oriented Design of Measurement Systems," Conference Record of IEEE Instrumentation and Measurement Technology Conference, May 12, 1992, New York, pp. 243-248. Dohlberg, S, "Galaxy from Visix", Open Information Systems, vol. 7, No. 10, Oct. 1992, pp. 1-16. Hruschka, "Towards an Object Oriented Method for System Architecture Design," Proceeding of the 1990 IEEE International Conference on Computer Systems and Software Engineering, COMPEURO '90, May 8, 1990, Tel Aviv, pp 12-17. McCormack et al., "Using the Toolkit or How to Write a Widget," Proc. Of the Summer 1988 USENIX Conf., Jun. 20, 1988, San Francisco, pp. 1-13. Musser, John, "Extending steambufs: class logstrubf" C++ Report. 4(3), Mar. 1992, pp. 51-55. Schmidt, Doug, "Systems Programming with C++ Wrappers: Encapsulating IPC Services," C++ Report, 4(8), Oct. 1992. pp. 50-54. Schmidt, Doug, "An Object-Oriented Interface to IPC Services," C++ Report, 4(9), Nov. 1992, pp. 48-54. Schmidt, Doug, "Encapsulating Operating Systems IPCs: An Object-Oriented Interface for Event-Driven UNIX I/O Multiplexing," C++ Report, 5(2), Feb. 1993, pp. 43-50. Adler, R.M., "A Hierarchical Distributed Control Model for Coordinating Intelligent Systems," Telmatics and Informatics, vol. 8(4), 1991, U.S., pp. 385-402. Guerraoui et al., "Distributed Programming in GARF," Object-Based Distributed Programming EFCOOP '93 Workshop, Jul. 26. 1993, Kaiserslautern. DE pp. 225-239. Motro et al., "The Design of KIVIEW: An Object-Oriented Browser," Proc. 2ndIntl. Conf. on Expert Database Systems, Apr. 25, 1988, pp. 107-131. IBM Technical Disclosure Bulletin, "Process Element Wrapper and the Context Verb Object Method Registry," vol. 34(10A), Mar. 1992, New York, pp. 433-435. Goodman, "Knowledge-Based Computer Vision," Computer. V.22(12), Dec. 1989, Long Beach. CA, pp. 43-54. Drake, "Objects and Images," Computer Systems, V. 10(1), Jan. 1990, Bromley, GB, pp. 31-32. Fiume, "Active Objects in the Construction of Graphical User Interfaces," Computers and Graphics, V. 13(3), Oxford, GB, pp. 321-327. Foley et al., Fundamentals of Interactive Computer Graphics, (1984) pp. 431-477, 964-965. Salisin et al., "Adjustable Tools: An Object-Oriented Interaction Metaphor," ACM Transactions on Graphics, V. 12(1), Jan. 1993, New York, NY, pp. 103-107. Schroeder, "Visage: An Object-Oriented Scientific Visualization System," Proceedings Visualization '92, Oct. 19, 1992, Los Alamitos, CA, pp. 219-226.