FIELD: human vital needs satisfaction.
SUBSTANCE: tool contains a gripping surface. The gripping surface forms the first plurality of depressions located in at least one first region on the surface. At least one first region forms the first level of frictional force. The second plurality of depressions is located in at least one second region on the surface. At least one second region forms the second level of frictional force. The second level of frictional force forms a relatively smaller amount of frictional force than the first level of frictional force. The third plurality of depressions forms a transitional level of frictional force between the first level of frictional force and the second level of frictional force. The third plurality of depressions connects each of at least one first region to each of at least one second region.
EFFECT: probability of tool sliding in the user's hand decreases.
16 cl, 12 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
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| DRIVEN TOOL | 2009 |
|
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| GRIPPING DEVICE WITH CONTROLLED FLUID MEDIUM | 1999 |
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| MANUAL CLEANING DEVICES | 2010 |
|
RU2471402C2 |
