One-way pepper grinding tool

Details One-way pepper grinding tool One-way pepper grinding tool

2000-12-22

2003-03-18

Husar, John M. (Department: 3725)

Solid material comminution or disintegration

Apparatus

Hand support comminutor

C241S259100

Reexamination Certificate

active

06533199

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a pepper grinding tool, which has an inner grinding part turnable relative to an outer grinding part to grind pepper in between, and particularly to one, of which the inner grinding part has one-way movement such that pepper can be ground relatively smoothly.
Referring to
FIGS. 7 and 8
, a conventional pepper grinding tool, with British Patent No. 2256378, has a pressing block
10
, a toothed bar
20
, a gear wheel
30
, a gear cluster
301
, a shaft
40
, an inner grinding part
50
and an outer grinding part
60
.
The pressing block
10
is depressable to move the toothed bar
20
downwards; when the pressing block
10
is released, the toothed bar
20
is biased up by an elastic member. The gear wheel
30
is connected to the toothed bar
20
and the gear cluster
301
. The shaft
40
is connected to the gear cluster
301
and the inner grinding part
50
such that when the toothed bar
20
is moved up and down, the inner grinding part
50
can be turned by means of the gear wheel
30
, the gear cluster
301
and the shaft
40
.
The inner grinding part
50
is disposed in the outer grinding part
60
which is fixedly disposed in the pepper grinding tool.
Thus, the inner grinding part
50
can turn relative to the inner grinding part
60
to grind pepper in between.
However, the pepper grinding tool is found to have a disadvantage that the inner grinding part
50
turns in one direction when the pressing block
10
is depressed, and the other direction when the pressing block is released, making the grinding movement not relatively smooth, especially when there are big pepper granule between the grinding parts
50
,
60
.
SUMMARY OF THE INVENTION
Therefore, it is a main object of the present invention to provide a pepper grinding tool, of which the inner grinding part can turn relative to the outer grinding part in only one direction to make a relatively smooth grinding movement.
The pepper grinding tool of the present invention includes a housing member, a grinding assembly and a one-way member.
The housing member has an operation lever pivotably connected with it.
The grinding assembly has an inner grinding part and an outer grinding part. The outer part is fixedly received in the housing member. The inner part is turnable relative to the outer part to grind pepper in between.
The one-way member is received in the housing member, and has a turnable main body in the housing. The main body has a central round hole, and several curved slots around the central round hole; the curved slots each ha an engaging end portion in open communication with the central round hole. The curved slots each receives an engaging block biased towards the engaging end portion by a spring.
When the main body of the one-way member is turned in a first direction by means of pressing the operation lever, the engaging blocks will be moved to the engaging end portions to engage a ring fitted in the central round hole, making the ring turn together with the main body. Thus, the inner grinding part associated with the ring can turn to grind pepper.
The main body is turned back in an opposite direction by a torsional spring connected to it when the operation lever is released, not able to make the ring and the inner grinding part turn because the engaging blocks are moved away from the engaging end portions, and don't engage the ring any longer. Therefore, the inner grinding part can only be turned in the first direction to grind pepper.


REFERENCES:
patent: 4343437 (1982-08-01), Czelen
patent: 4374574 (1983-02-01), David
patent: 5082190 (1992-01-01), Chen

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