# US 5,702,020 A · Drinking mug

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- Number: US 5,702,020 A
- Document ID: US5702020A
- Status: Granted
- Kind: A
- Application number: 08/647,647
- Filed: 1996-05-15
- Granted: 1997-12-30
- Earliest claimed: 1992-07-10
- Inventors: Randi Bollerup Larsen
- Web page: https://patentgrep.com/patent/US5702020A

## CPC

- A47G 19/2272: {from drinking glasses or cups comprising lids or covers}
- A47G: HOUSEHOLD OR TABLE EQUIPMENT (book-ends A47B5/00; knives B26B)

## Abstract

A drinking mug for small children, handicapped and hospital patients, comprising a cup, a lid and a suction tube, is configured in an airtight manner so that only access to the inside of the mug is through the suction tube. Tightness is achieved by disposing the suction tube on the inside of the lid on a drinking spout and by providing a sealing ring in the joint between the lid and the cup. Due to the airtight construction, when liquid is sucked up an under pressure is created inside the mug which subsequently empties the suction tube of liquid. Correspondingly, an attempt by the liquid to run out through the suction tube when the mug is tipped over is counteracted by the siphon effect which results from the airtight construction.

## Claims

### Claim 1

Drinking mug comprising a cup defining an opening for filling with liquid, a lid with means for removably connecting said lid to said cup to cover said opening in a gastight fashion, said lid having no air vent therethrough; and at least one continuous suction tube which extends from a mouth at a top side of the mug to an inlet end inside the mug disposed at a relatively short distance over a bottom of the mug, such that when a non-carbonated liquid is sucked from the interior of the mug through the suction tube, a partial vacuum will be created therein above the liquid to prevent further liquid spillage when the suction is discontinued, flow of air into the mug taking place exclusively through the suction tube.

### Claim 2 (depends on 1)

Drinking mug according to claim 1, including a sealing ring between the lid and the mug.

### Claim 3 (depends on 1)

Drinking mug according to claim 1, including mutually abutting sealing parts on said lid and said mug.

### Claim 4 (depends on 1)

Drinking mug according to claim 1, wherein the bottom of the mug has at least one recess positioned in such a manner that the inlet to the suction tube is disposed opposite to and down in the recess.

### Claim 5 (depends on 4)

Drinking mug according to claim 4, wherein the recess is annular and positioned symmetrically in the bottom.

### Claim 6 (depends on 1)

Drinking mug according to claim 1, wherein said means for removably connecting said lid to said muq includes at least two bayonet locks.

### Claim 7 (depends on 6)

Drinking mug according to claim 6, wherein the bayonet locks are configured with lateral pins which extend towards each other from a wall of the mug, and where cutouts are provided in the lid, said cutouts being configured to cooperate with the pins upon the mutual turning of lid and mug so that the pins actuate a flexible portion at the cutouts until the pins have passed a top point on the portions, where the pins assume a locking position in relation to the cutouts, where from said locking position no further movement can be made in the same direction; and wherein turning in the opposite direction can only be effected by overcoming a force which arises with the passage by the pins of the top point in the opposite direction.

### Claim 8 (depends on 1)

Drinking mug according to claim 1, wherein the lid constitutes the bottom of the mug, and wherein the cup is configured with a closed top side with the exception of the mouth of the suction tube which is disposed at or in the top side of the cup.

### Claim 9 (depends on 8)

Drinking mug according to claim 8, wherein the suction tube is configured as a channel which extends through a thicker part of the side of a cup.

### Claim 10 (depends on 1)

Drinking mug according to claim 1, including a non-carbonated liquid in said cup.