Multi-directional controller having resiliently biased cam and cam follower for tactile feedback
Patent 4733214 Issued on March 22, 1988. Estimated Expiration Date: 
November 18, 2006. 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.
November 18, 2006. 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 ReferencesInventorApplicationNo. 06/932461 filed on 11/18/1986US Classes:338/128, Plural324/207.24, Linear338/32R, Magnetic field or compass (e.g., Hall effect type)74/523, Hand74/569FollowerExaminersPrimary: Goldberg, E. A.Assistant: Lateef, M. M. Attorney, Agent or FirmInternational ClassesG05G 9/00 (20060101)G05G 9/047 (20060101) H03K 17/94 (20060101) H03K 17/97 (20060101) H01H 25/00 (20060101) AbstractA multi-directional contactless controller senses the displacement of a manipulator with respect to a reference frame along two orthogonal directions and is also provided with a resiliently biased cam and cam follower disposed between the manipulator and the reference frame for providing tactile feedback and returning the manipulator to a central position. For specific applications, the cam surface is programmed with various regions having different restoring forces or rest positions. Access to these regions can be conditioned by selectively activated solenoids or by a requirement for overt operator input. Similarly, a selectively activated solenoid can be used to conditionally prohibit exit from these regions or to selectively return the controller to the central null position.Other References
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