APPARATUS FOR CLEANING BREW HEAD SCREEN

• US 3,824,913 A
• Filed: 04/16/1973
• Issued: 07/23/1974
• Est. Priority Date: 04/16/1973
• Status: Expired due to Term

• Current Assignee: David Herman, Sidney J. Friedman
• Original Assignee: David Herman, Sidney J. Friedman
• Inventors: Herman, David, Friedman, Sidney J.
• Primary Examiner(s): Jenkins, Robert W.
• Application Number:
  US05/351,238
• Time in Patent Office: 463 Days
• Field of Search: 99/287,297,302,323,295,289,279,298
• US Class Current: 99/298
• CPC Class Codes: A47J 31/3619 Means to remove coffee after brewing
• CPC Class Codes: A47J 31/60 Cleaning devices

Abstract

A single-cup coffee brewing assembly includes a brew cup which is moved from an inverted depressed position to a raised upright position, and is connected to a metered source of hot water. A cover member advances longitudinally into registry with the brew cup which engages the advanced cover upon the brew cup reaching its raised position. The cover has a bottom metal screen which is cleaned with the cover advancing and retracting movement by passing over a transversely extending helically wound brush. The brush is upwardly spring-biased and is replaceable in a support bracket which is releasably mounted in the assembly frame. The cover has a chamber above the screen which is connected to the brew discharge.

Claims

1. A brewing device comprising a brew cup having a top opening and means providing liquid communication with said brew cup below said top opening, a cover member longitudinally movable between an advanced position in vertical registry with said brew cup and a retracted position remote from said brew cup and having a perforate bottom wall, and a brush member located below said cover member and projecting above the underface of said perforate wall and extending for the width thereof and disposed between the retracted and advanced positions of said cover member.

2. A brewing device as in claim 1, wherein said perforate bottom wall comprises a woven metal wire filter screen.

3. A brewing device as in claim 1, wherein said brush member is vertically movable and including means upwardly resiliently biasing said brush.

4. A brewing device as in claim 1, wherein said brush comprises a transversely extending core and bristles projecting outwardly from said core and extending in a helical path about said core.

5. A brewing device as in claim 4, wherein said core comprises a pair of twisted metal wires engaging said bristles and said bristles are formed of a synthetic organic polymeric resin.

6. A brewing device as in claim 1, comprising a support frame including a pair of transversely spaced, longitudinally extending tracks supporting said cover member for movement between said advanced and retracted positions, means mounted on said support frame for vertically moving said brew cup between a depressed inverted position and a raised upright position in engagement with said cover member when in its advanced position and a bracket member mounted on said frame and supporting said brush member.

7. A brewing device as in claim 6, wherein said brush member comprises a transversely extending core and outwardly projecting bristles, said brush member being separably supported by said bracket member.

8. The brewing device of claim 7, wherein said bristles are formed of nylon.

9. A brewing device as in claim 6, wherein said bracket member is separably secured to said frame member.

10. A brewing device as in claim 9, wherein said support frame comprises a pair of opposing transversely spaced, longitudinally extending vertical plates, said tracks being along the upper parts of said plates, and said bracket member comprises a pair of longitudinally extending strips releasably engaging the confronting faces of said plates, and a cross-piece connected to and extending between said strips, said brush being separably supported by said cross-piece.

11. A brewing device as in claim 10, wherein said cross-piece comprises a pair of opposite outer legs extending transversely to said strips, a pair of arms projecting longitudinally from the inner ends of said legs, and a transverse cross-arm joining the ends of said longitudinal arms remote from said legs, said longitudinal arms having recesses formed therein releasably engaging said brush core.

12. The brewing device of claim 11, wherein each of said recesses includes a vertically extending slot closed at the top thereof and vertically slidably engaging opposite end sections of said brush core, and spring elements engaging the underface of said core proximate said recesses and resiliently urging said core toward engagement with the upper ends of said slots.

13. The brewing device of claim 12, wherein each of said slots has an opening in the lower side thereof, said spring elements normally closing said openings and being dePressible to below the level of the tops of said openings to provide access to said slots through said openings.