Thermal expansion compensation pendulum
Patent 5067808 Issued on November 26, 1991. Estimated Expiration Date: 
June 7, 2010. 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.
June 7, 2010. 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 1325936 2533478 2755370 3205774 Motion picture camera having an interchangeable lens Patent #: 4515469 InventorApplicationNo. 534734 filed on 06/07/1990US Classes:352/140, WITH FOCUS CONTROL359/820With temperature compensation or controlExaminersPrimary: Hayes, Monroe H.Attorney, Agent or FirmInternational ClassesG03B 003/00G02B 007/02 Foreign Application Priority Data1989-06-08 DEAbstractDevice for connecting two components of a motion-picture camera. A thermal expansion compensation pendulum (Rost pendulum) (3) is disposed between the two components (10, 11), said pendulum being composed of a first element (31) connected with one component (11), a second element (32) connected with the component (10), and at least one intermediate element having axial and/or radial play between both elements (31, 32) and being connected therewith. The coefficient of thermal expansion of the intermediate element or elements (33) is a multiple of the coefficients of thermal expansion of the first and second elements. | |
