Portable grinder

Abstract

A portable grinder may include a side cover having inner threads and a cover receiving space, said inner threads used to engage with middle inner threads of a middle piece; a first grinding piece, one side of which having a plurality of first grinding protrusions and a plurality of through holes scattered at various locations between the first grinding protrusions; and the other side having a screening unit; a middle piece adapted to receive the first grinding piece and connect to a second grinding piece through a bearing; and a second grinding piece having a plurality of second grinding protrusions facing the first grinding protrusions, wherein substances to be grinded are disposed in a second receiving space between first and second grinding protrusions, and the first and second grinding protrusions of the portable grinder are driven by gravity to spin to grind the substances therein.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a portable grinder, and more particularly to a portable tobacco grinder in which the gravity triggers the movement of the grinder to grind the tobacco leaves therein.BACKGROUND OF THE INVENTION[0002]There are several types of grinders to grind materials such as tobacco leaves used in cigarettes or pipes. At an early stage, user would simply crush tobacco leaves in their hands. With the advance of mechanical arts, the tobacco leaves can be grinded into smaller particles in mechanical devices. In U.S. Pat. No. 4,304,363 to Atkielski, it discloses a compact grinder for material used for cigarettes, and more particularly a small, compact grinder useful for materials used in cigarettes which is able to be carried in a woman's purse, automobile glove compartment and the like, and which is easily operated to provide freshly ground foreign particle free material for rolling cigarettes, as shown in FIG. 1. However, when the grinder...

AI Technical Summary

Benefits of technology

[0005]It is an object of the present invention to provide a portable grinder that can not only save the user's efforts when grinding the materials therein, but also serve the entertainment purposes.

[0006]It is another object of the present invention to provide a “yo-yo” style grinder to grind the substances therein, so that the user can operate the grinder and enjoy playing the yo-yo.

[0007]It is a further object of the present invention to provide a yo-yo style grinder to more efficiently grind the substances therein, wherein the grinding process can be repeated several times when the yo-yo grinder goes back and forth.

[0014]Comparing with conventional leaf grinders, the present invention is advantageous because the user can easily and efficiently operate the yo-yo style grinder without spending too much effort. The user can simply hold the string at one end and releases the grinder, and the gravity would cause the grinder to spin down to drive the first grinding protrusions and the second grinding protrusions to grind the substances therebetween. The user can then pull the yo-yo style grinder up, and the grinder would spin toward the other direction to drive the first and second grinding protrusions to grind again. The grinding process can be repeated when the user releases and pulls up the yo-yo style grinder.

Problems solved by technology

However, when the grinder is used, the user still has to manually operate the grinder, which may cause certain level of inconvenience to the user.

Also, this grinder does not serve any entertainment purposes to the user while he / she is grinding the materials.

However, like Atkielski, the grinding device does not serve any entertainment purposes while the user is using the grinder, and the user has to spend efforts to manually grind the substances therein.

Even though the user can have a visual access to the interior of the compartment of the tobacco grinder, similar to Atkielski and Namakian, the user still has to spend efforts to operate the tobacco grinder, and the grinder still fails to serve any entertainment purposes.

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