# US 6,719,451 B1 · Rotating cup mechanism

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- Number: US 6,719,451 B1
- Document ID: US6719451B1
- Status: Granted
- Kind: B1
- Application number: 10/409,473
- Filed: 2003-04-09
- Granted: 2004-04-13
- Earliest claimed: 2003-04-09
- Assignees: Sara Rose International Inc.
- Inventors: Shung-Hsiung Yue
- Web page: https://patentgrep.com/patent/US6719451B1

## CPC

- A47J 43/27: for mixing drinks; Hand-held shakers (mechanically driven A47J43/042)
- A47J: KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES

## Abstract

Aiming to eliminate the need to use an external stir in most hot beverage cups, the present invention of a rotating cup mechanism includes: an outer cup, an inner cup and an outer cup base driving module while the inner cup is normally inset in the outer cup and interlocked with the driving module where the driving module leads to a push button exposed on the side. When the push button is repeatedly pressed, the driving module moves its gear wheel to start relative rotating motion between the outer and inner cups, generating liquid flows in the cup to achieve a more equilibrium mix of the liquid content. A secondary purpose of the present invention is the provision of a detachable inner cup that is can be easily removed for cleaning and then reassembled.

## Claims

### Claim 1

A rotating cup mechanism comprises:
an outer cup, an inner cup and a driving module at the base of the outer cup wherein the inner cup is to be inset in the outer cup and to interlock with the driving module on the base of the outer cup, wherein, upper seat, ball bearing ring, ball bearings, lower seat, driving axle, gear wheel, push button and base seat, by pressing the push button repeatedly, the gear wheel moves the driving axle, and in turns, the upper seat and inner cup to generate a rotating motion relative to the outer cup.

### Claim 2 (depends on 1)

The rotating cup mechanism of claim 1, wherein the inside wall surface of the inner cup is devised with a plurality of protruding leaves.

### Claim 3 (depends on 1)

The rotating cup mechanism of claim 1, wherein the top opening of the inner cup is fitted with a cover.