TW200621441A - An improved structure of shape-changed clamping part of wrench - Google Patents
An improved structure of shape-changed clamping part of wrenchInfo
- Publication number
- TW200621441A TW200621441A TW093140382A TW93140382A TW200621441A TW 200621441 A TW200621441 A TW 200621441A TW 093140382 A TW093140382 A TW 093140382A TW 93140382 A TW93140382 A TW 93140382A TW 200621441 A TW200621441 A TW 200621441A
- Authority
- TW
- Taiwan
- Prior art keywords
- wrench
- contacting
- propping
- shape
- improved structure
- Prior art date
Links
Abstract
This invention discloses an improved structure of shape-changed clamping part in the driving head of wrench. It is to equip a hexagonal receptacle space in the driving head of the wrench. The six surfaces of the receptacle space comprise three contacting parts and three propping parts arranged alternatively. Every contacting part is a full flat plane while each propping part consists of two arc surfaces and one intermediate cusp. There is concave formed at the intersection between the contacting part and the propping part. When the bolt head or nut is inserted into the receptacle space, three of its tangential surfaces will contact with the contacting parts tightly and the other three tangential surfaces will be engaged sturdily by the two arc surfaces and the intermediate cusp so as to increase the sustainable torque and to avoid slipping. The wrench can be used to drive worn bolt or nut as well; therefore, the invention is very practical and has multiple functions.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW93140382A TWI287492B (en) | 2004-12-24 | 2004-12-24 | An improved structure of shape-changed clamping part of wrench |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW93140382A TWI287492B (en) | 2004-12-24 | 2004-12-24 | An improved structure of shape-changed clamping part of wrench |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200621441A true TW200621441A (en) | 2006-07-01 |
TWI287492B TWI287492B (en) | 2007-10-01 |
Family
ID=39201657
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW93140382A TWI287492B (en) | 2004-12-24 | 2004-12-24 | An improved structure of shape-changed clamping part of wrench |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI287492B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI379739B (en) | 2010-12-06 | 2012-12-21 | Jyun Wun Liao | Sleeve structure for a spanner |
TW201341127A (en) * | 2012-04-10 | 2013-10-16 | you-min Wang | Engaged rotary tool structure |
-
2004
- 2004-12-24 TW TW93140382A patent/TWI287492B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
TWI287492B (en) | 2007-10-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MC4A | Revocation of granted patent |