Dispenser for paste-like products with manually actuable piston including insert device
Patent 4515298 Issued on May 7, 1985. Estimated Expiration Date: 
May 7, 2002. 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 7, 2002. 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 3527551 Dispenser for paste-like products with a manually actuatable piston Apparatus and process for removing and dispensing liquid from a receptacle Patent #: 4396132 InventorApplicationNo. 06/344694 filed on 02/01/1982US Classes:222/380, Valve outlet222/256, Follower combined with casing enclosed impeller222/383.1, Container-mounted pump222/387Valved outlet, movable discharge guide and/or gas ventExaminersPrimary: Skaggs, H. GrantAssistant: Handren, Frederick R. Attorney, Agent or FirmInternational ClassesB67D 5/01 (20060101)B67D 5/02 (20060101) B05B 11/00 (20060101) AbstractThis relates to a dispenser for paste-like products wherein there is a pump chamber disposed between a container for the product and a dispensing opening and the pump chamber and an adjacent duct have associated therewith flow control inlet and outlet valves. The principal feature resides in the provision of a separate insert which is telescoped between a container and a head member and which insert defines a pump cylinder and a discharge duct and carries and inlet valve element and an outlet valve element. The inlet valve element is integrally formed with the insert while the outlet valve element may be selectively formed integrally with the insert or as a separate insert which may be readily incorporated within the primary insert.Field of SearchValve outlet | |
