Patent US299183A successfully refreshed from Google Patents.
Patent US3298701A successfully refreshed from Google Patents.
US3298701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand drill
Assignee: Individual
•
Filing: 1963-12-20
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Granted: 1967-01-17
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Expires: 1983-12-20
Abstract
No abstract record available.
Inventors
- 👤 Borden John Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:41
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/08; A61C1/14; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17957
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A BUR EXTRACTION MECHANISM FOR USE WITH A DRILL HAVING AN ELONGATED STRAIGHT HANDPIECE HOUSING, A FLUID DRIVEN TURBINE AXIALLY POSITIONED WITHIN THE HOUSING INCLUDING A SHAFT HAVING ONE END IN ALIGNMENT WITH AN AXIAL OPENING AT ONE END OF THE HOUSING, SAID SHAFT HAVING AN AXIAL PASSAGE THROUGHOUT ITS LENGTH AND INCLUDING MEANS FOR FRICTIONALLY RECEIVING A BUR AT SAID ONE END, AN ELONGATED STEM AXIALLY SLIDABLY MOUNTED WITHIN SAID HANDPIECE HOUSING IN ALIGNMENT WITH SAID SHAFT AND FREELY SLIDABLE IN SAID PASSAGE FOR EJECTING A BUR, SAID STEM INCLUDING A TRANSVERSE MEMBER MOVABLE IN A LONGITUDINAL SLOT IN SAID HOUSING, AND A RING SHAPED MEMBER ENCIRCLING THE EXTERIOR OF THE HOUSING CONNECTED WITH SAID TRANSVERSE MEMBER.
Claim 2
Dependent Claim
118 words
A BUR EXTRACTION MECHANISM FOR USE WITH A DRILL HAVING AN ELONGATED STRAIGHT HANDPIECE HOUSING, A FLUID DRIVEN TURBINE AXIALLY POSITIONED WITHIN THE HOUSING INCLUDING A SHAFT HAVING ONE END IN ALIGNMENT WITH AN AXIAL OPENING AT ONE END OF THE HOUSING, SAID SHAFT HAVING AN AXIAL PASSAGE THROUGHOUT ITS LENGTH AND INCLUDING MEANS FOR FRICTIONALLY RECEIVING A BUR AT SAID ONE END, AN ELONGATED STEM AXIALLY SLIDABLY MOUNTED WITHIN SAID HANDPIECE HOUSING IN ALIGNMENT WITH SAID SHAFT AND FREELY SLIDABLE IN SAID PASSAGE FOR EJECTING A BUR, SAID STEM INCLUDING A TRANSVERSE MEMBER MOVABLE IN A LONGITUDINAL SLOT IN SAID HOUSING, AND A RING SHAPED MEMBER ENCIRCLING THE EXTERIOR OF THE HOUSING CONNECTED WITH SAID TRANSVERSE MEMBER.
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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |