Patent US5481949A successfully refreshed from Google Patents.
US5481949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking member for use in hand tools
Assignee: Individual
•
Filing: 1994-08-15
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Granted: 1996-01-09
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Expires: 2014-08-15
Abstract
Abstract A locking member including a sleeve and a U-shaped plate. The sleeve has an axial hole at one end thereof and its outer surface is provided with an annular groove having a pair of holes arranged face-to-face with each other. The U-shaped plate has clamp portions having protrusions which penetrate through the holes in the groove of the sleeve to project within the axial hole of the sleeve for temporarily clamping a rod object inserted into the sleeve.
Inventors
- 👤 En-Ji Yen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:53
CPC Classifications
B; B25; B25B; B25B23/00; B25B23/0007; B25B23/0035; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17128; Y10T279/17162; Y10T279/17761; Y10T279/17786; Y10T403/00; Y10T403/60; Y10T403/602
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
176 words
A locking member for use in hand tools for temporarily locking a detachable rod object inserted into a sleeve, said locking member comprising: said sleeve having at least one axial hole, and a groove provided in the outer surface of said sleeve, said groove being provided with a pair of holes arranged face-to-face with each other and in a direction perpendicular to the axis of said sleeve, said holes penetrating said groove into said axial hole of said sleeve; a U-shaped spring plate having a pair of clamp portions arranged face-to-face with each other and a link portion extending from an end of each of the corresponding clamp portions; the inner surface of each of said clamp portions being provided with a protrusion which is smaller than each of said holes in said groove of said sleeve, wherein when said U-shaped spring plate is inserted into said groove, said protrusions extend through said holes in said groove to project within said sleeve for temporarily clamping a rod object inserted via said axial hole of said sleeve.
Claim 2
Dependent Claim
176 words
A locking member for use in hand tools for temporarily locking a detachable rod object inserted into a sleeve, said locking member comprising: said sleeve having at least one axial hole, and a groove provided in the outer surface of said sleeve, said groove being provided with a pair of holes arranged face-to-face with each other and in a direction perpendicular to the axis of said sleeve, said holes penetrating said groove into said axial hole of said sleeve; a U-shaped spring plate having a pair of clamp portions arranged face-to-face with each other and a link portion extending from an end of each of the corresponding clamp portions; the inner surface of each of said clamp portions being provided with a protrusion which is smaller than each of said holes in said groove of said sleeve, wherein when said U-shaped spring plate is inserted into said groove, said protrusions extend through said holes in said groove to project within said sleeve for temporarily clamping a rod object inserted via said axial hole of said sleeve.
Claim 3
Dependent Claim
33 words
A locking member as claimed in claim 1, further comprising a jacket fitted onto the outer surface of said sleeve so that said U-shaped spring plate may not slip out of said groove.
Claim 4
Dependent Claim
34 words
A locking member as claimed in claim 1, wherein said sleeve is a driver rod of a hand tool and said rod object is a bit fitted at an end of said driver rod.
Claim 5
Dependent Claim
20 words
A locking member as claimed in claim 1, wherein said sleeve is secured within a handle of a hand tool.
Claim 6
Dependent Claim
20 words
A locking member as claimed in claim 4, wherein said rod object is a driver rod of a hand tool.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-01-08 | 1999-07-10 | 2000-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-08 | 2003-07-10 | 2004-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-08 | 2007-07-10 | 2008-01-09 | $7700.00 | Window Closed / Lapsed |