Coffeemaker pump system

Abstract

Abstract A generally C-shaped coffeemaker housing holds a heated carafe on one horizontal leg and a water spreader on the other with the vertical leg enclosing an accessible water reservoir having an apertured bottom wall. The housing has a pump and heated chamber in the bottom for delivering heated water to the spreader and a tubular outer conduit connecting the reservoir and chamber with a concentric spaced inner conduit between the chamber and reservoir interior. An integral one way valve is provided on the inner conduit between the conduits and the chamber permitting cold water into the chamber through the outer conduit and hot water exit through the inner conduit. To this conventional structure, an improvement is provided in a four-part pump and delivery subassembly comprising an insulating tube surrounding the inner conduit its entire length, a cylindrical heat resistant plastic retainer on the upper end of the inner conduit and a spring between the retainer and insulating means to abut both to telescopically bias the retainer. The retainer has horizontal ears that match slots in the bottom wall aperture and a manually removal flexible elastomer tube connects the spreader and upper inner conduit whereby the entire pump and delivery subassembly may be completely removed by detaching the elastomer tube then pressing and rotating the retainer to align the ears and slots and unlock the retainer to lift out the entire subassembly which then may be concentrically separated for cleaning.

Inventors

• 👤 Charles L. Kemp

Bibliographic Details