Rotary actuator
Patent 4313367 Issued on February 2, 1982. Estimated Expiration Date: 
May 8, 2000. 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.
May 8, 2000. 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 1056616 2948263 3198539 3213923 3255806 3388603 3393610 3613169 3791263 3834283 InventorApplicationNo. 06/147861 filed on 05/08/1980US Classes:92/33Element extends through working member portionExaminersPrimary: Hershkovitz, AbrahamAttorney, Agent or FirmInternational ClassesF15B 15/00 (20060101)F15B 15/08 (20060101) AbstractA helical rotary actuator is provided with end bearings which overlie or wrap around the cylinder wherein the piston of the rotary helical actuator is linearly reciprocated. The wrapping around of the bearing reduces the length of the actuator and also increases the circumferential bearing surface for carrying higher radial loads within the confined length of the actuator. In one embodiment, inner and outer radial bearings are provided with the outer bearing wrapping around and the inner bearing supporting the output shaft of the actuator through a large diameter collar for greatly increasing the radial load-carrying capacity of the actuator. | |
