US4020846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Splinter puller
Assignee: Individual
•
Filing: 1975-09-26
•
Granted: 1977-05-03
•
Expires: 1995-09-26
Abstract
Abstract An instrument for removing splinters embedded in skin has a pair of pincers that extend generally in a first direction and are mutually spaced apart in a second direction transverse to the first direction. Each pincer is substantially broader in a third direction orthogonal to the first and second directions than in the second direction. A free or working end of each pincer, also broader in the third direction than the second direction, converges convexly to a tip. The leading edges of the working ends, defined by the junction of the interior facing surfaces of the working ends and the outwardly facing exterior surfaces, are sharpened to facilitate the penetration of the instrument to the embedded splinter. The interior facing surfaces of the working ends adjacent the leading edges are preferably hollowed to prevent blocking.
Inventors
- 👤 Henry W. Stokes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:20
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/30; A61B17/50
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
233 words
An instrument for removing a splinter embedded in skin comprising, a handle extending in a first direction, a pair of pincers secured at one end to one end of said handle and spaced in a second direction transverse to said first direction, said pincers being substantially broader in a third direction orthogonal to said first and second direction than in said second direction, and tapering convexly at their free ends in said second and third directions to tips, said tapering defining a leading edge adjacent each of said tips that are opposed to one another, said pincers being movable with respect to one another generally in the second direction to grip said splinter between said opposed leading edges, and said leading edges being sharpened to slice the skin in a direction generally normal to the sharpened leading edge in response to movement of the instrument in a direction at least in part parallel to said sharpened leading edges, said slicing facilitating the entry of the instrument into the skin to reach said splinter, the interior mutually facing surfaces of said free ends adjacent said leading edges being hollow to prevent contact between the pincers over said surfaces from blocking said gripping at said leading edges, and said hollows and said convex tapering of said free ends being structured to prevent the skin adjacent said splinter from blocking said gripping at said leading edges.
Claim 2
Dependent Claim
233 words
An instrument for removing a splinter embedded in skin comprising, a handle extending in a first direction, a pair of pincers secured at one end to one end of said handle and spaced in a second direction transverse to said first direction, said pincers being substantially broader in a third direction orthogonal to said first and second direction than in said second direction, and tapering convexly at their free ends in said second and third directions to tips, said tapering defining a leading edge adjacent each of said tips that are opposed to one another, said pincers being movable with respect to one another generally in the second direction to grip said splinter between said opposed leading edges, and said leading edges being sharpened to slice the skin in a direction generally normal to the sharpened leading edge in response to movement of the instrument in a direction at least in part parallel to said sharpened leading edges, said slicing facilitating the entry of the instrument into the skin to reach said splinter, the interior mutually facing surfaces of said free ends adjacent said leading edges being hollow to prevent contact between the pincers over said surfaces from blocking said gripping at said leading edges, and said hollows and said convex tapering of said free ends being structured to prevent the skin adjacent said splinter from blocking said gripping at said leading edges.
Claim 3
Dependent Claim
38 words
An instrument according to claim 1 in which each of said free ends extends between its leading edges in the third direction for at least 1/16 inch except for the portion immediately adjacent the tip of said pincer.
Claim 4
Dependent Claim
42 words
An instrument according to claim 1 in which one of said pair of pincers has a thinned region near said handle to promote movement of said pincer in said second direction, and the other of said pair of pincers is substantially stationary.
Claim 5
Dependent Claim
23 words
An instrument according to claim 1 wherein said pincers are bowed away from each other along said second direction to further reduce blocking.
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) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |