US3427720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand drilling apparatus
Assignee: Individual
•
Filing: 1963-10-25
•
Granted: 1969-02-18
•
Expires: 1983-10-25
Abstract
No abstract record available.
Inventors
- 👤 Herbert Berman
- 👤 Harvey L Pastan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:34
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/02; A61C1/06; A61C1/0007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
HAND DRILLING APPARATUS COMPRISING: MEANS DEFINING A CASING THAT CAN BE HELD IN ONE HAND, MEANS SECURED TO SAID CASING FOR SUPPORTING A BIT FOR HIGH SPEED ROTARY MOTION, AN ELECTRIC BRUSHLESS MOTOR HAVING A ROTOR INDUCTIVELY COUPLED TO A STATOR AND SUPPORTED BY SAID CASING FOR IMPARTING ROTARY MOTION THROUGH MEANS INCLUDING THE BIT SUPPORTING MEANS TO A BIT WHEN SUPPORTED BY THE LATTER,
Claim 2
Dependent Claim
65 words
HAND DRILLING APPARATUS COMPRISING: MEANS DEFINING A CASING THAT CAN BE HELD IN ONE HAND, MEANS SECURED TO SAID CASING FOR SUPPORTING A BIT FOR HIGH SPEED ROTARY MOTION, AN ELECTRIC BRUSHLESS MOTOR HAVING A ROTOR INDUCTIVELY COUPLED TO A STATOR AND SUPPORTED BY SAID CASING FOR IMPARTING ROTARY MOTION THROUGH MEANS INCLUDING THE BIT SUPPORTING MEANS TO A BIT WHEN SUPPORTED BY THE LATTER,
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) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |