Hookswitch mechanism for telephone handset
Patent 4152554 Issued on May 1, 1979. Estimated Expiration Date: 
March 20, 1998. 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.
March 20, 1998. 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 552705 2165693 3824353 InventorApplicationNo. 05/887961 filed on 03/20/1978US Classes:379/426Movable holder for receiver or handsetExaminersPrimary: Cooper, William C.Attorney, Agent or FirmInternational ClassesH04M 1/08 (20060101)H04M 1/04 (20060101) AbstractA hookswitch mechanism adapted to be operated responsive to movement of the cradle of a telephone instrument. The hookswitch mechanism has a plunger, axially operable to open and close contacts. The movable contacts are rectangular strips mounted on the movable plunger body. A housing encloses the plunger body and mounts the stationary contacts adjacent the ends of the contact strips. The mechanism is mounted on a bracket which also supports the cradle for pivotal movement thereby ensuring the relative positioning and alignment of cradle and hookswitch mechanism. | |
