Bellows actuator for condition responsive control device and method of making the same
Patent 5425304 Issued on June 20, 1995. Estimated Expiration Date: 
September 14, 2012. 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.
September 14, 2012. 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 ReferencesInventorAssigneeApplicationNo. 947290 filed on 09/14/1992US Classes:92/34BELLOWS TYPE EXPANSIBLE CHAMBERExaminersPrimary: Lopez, F. DanielAttorney, Agent or FirmInternational ClassF16J 003/04AbstractA condition responsive control device comprising a case, a controller carried by the case, a linkage system supported by the case and coupled to the controller, and a condition responsive linkage actuator. The actuator comprises a convoluted bellows having an anchor convolution hermetically fixed to a bellows supporting housing. An anchor convolution mounting face and a housing bellows support zone are bonded together to secure the bellows to the support housing so that the bellows operates the linkage and controller in response to pressure differentials. | |
