Needle-hub assembly for syringes
Patent 4009716 Issued on March 1, 1977. Estimated Expiration Date: 
March 1, 1994. 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 1, 1994. 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 3682174 3825003 Two-chamber mixing syringe Patent #: 3946732 InventorApplicationNo. 658613 filed on 02/17/1976US Classes:604/192, Having cover or protector for body entering conduit604/201Septum pierced by conduit to permit flowExaminersPrimary: Yasko, John D.Attorney, Agent or FirmAbstractA needle-hub assembly on a hypodermic syringe sealed at its open end by a sealing disc, the improvement wherein the needle and hub are displaced from a normally relaxed position to a tensioned position in response to movement to remove a needle cover from the assembly and wherein the needle and hub are thrust in the direction toward the sealing disc to pierce the sealing disc upon continued movement for removal of the cover. | |
