Patent US2736696A successfully refreshed from Google Patents.
Patent US3726352A successfully refreshed from Google Patents.
US3726352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for clamping cutting inserts in a drill
Assignee: Santrade Ltd
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Filing: 1970-11-20
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Granted: 1973-04-10
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Expires: 1990-11-20
Abstract
Abstract The cutting inserts of a rotary drill are secured to the drill head by means of clamps which attach the inserts on support bodies laterally projecting from the drill body.
Inventors
- 👤 A Roos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:37
CPC Classifications
B; B23; B23B; B23B51/00; B23B2251/00; B23B2251/02; B23B2251/56; B23B51/06; B23B51/063; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1906; Y10T407/1908; Y10T407/192; Y10T407/1932; Y10T407/1952; Y10T407/1962; Y10T408/00; Y10T408/86; Y10T408/87; Y10T408/89; Y10T408/905; Y10T408/906; Y10T408/909; Y10T408/9098; Y10T408/90993
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
Rotary drill for metal drilling, which comprises A DRILL HEAD HAVING A TRANSVERSE FRONT SURFACE AND A LONGITUDINAL SURFACE, SAID LONGITUDINAL SURFACE DEFINING A SPACE FOR CHIP REMOVAL; A NUMBER OF CUTTING INSERTS DISPOSED ALONG THE JUNCTION BETWEEN SAID FRONT SURFACE AND LONGITUDINAL SURFACE, EACH CUTTING INSERT BEING CLAMPED IN A SUPPORT BODY HAVING A LONGITUDINAL CONTACT SURFACE AND FROM SAID SURFACE A LATERALLY EXTENDING PROJECTION, SAID LONGITUDINAL SURFACE OF THE DRILL HEAD HAVING A FIRST LATERAL RECESS THAT IS OPEN FORWARDLY AND IN SAID FIRST RECESS A SECOND LATERAL RECESS THAT IS CLOSED FORWARDLY, THE SAID FIRST RECESS HAVING A LONGITUDINAL CONTACT SURFACE ABUTTING AGAINST THE LONGITUDINAL CONTACT SURFACE ON SAID SUPPORT BODY, THE LATERAL PROJECTION ON THE SUPPORT BODY ENTERING INTO THE SECOND RECESS; A CLAMPING SCREW EXTENDING FROM THE FRONT SURFACE AND HOLDING SAID PROJECTION CLAMPED IN SAID SECOND RECESS, THE INSERT BEING CLAMPED IN THE SUPPORT BODY BY INDEPENDENT CLAMPING MEANS, THE SUPPORT BODY AND THE CLAMPED INSERT FORMING AN ASSEMBLY REMOVABLE FROM SAID DRILL AS A UNIT.
Claim 2
Dependent Claim
172 words
Rotary drill for metal drilling, which comprises A DRILL HEAD HAVING A TRANSVERSE FRONT SURFACE AND A LONGITUDINAL SURFACE, SAID LONGITUDINAL SURFACE DEFINING A SPACE FOR CHIP REMOVAL; A NUMBER OF CUTTING INSERTS DISPOSED ALONG THE JUNCTION BETWEEN SAID FRONT SURFACE AND LONGITUDINAL SURFACE, EACH CUTTING INSERT BEING CLAMPED IN A SUPPORT BODY HAVING A LONGITUDINAL CONTACT SURFACE AND FROM SAID SURFACE A LATERALLY EXTENDING PROJECTION, SAID LONGITUDINAL SURFACE OF THE DRILL HEAD HAVING A FIRST LATERAL RECESS THAT IS OPEN FORWARDLY AND IN SAID FIRST RECESS A SECOND LATERAL RECESS THAT IS CLOSED FORWARDLY, THE SAID FIRST RECESS HAVING A LONGITUDINAL CONTACT SURFACE ABUTTING AGAINST THE LONGITUDINAL CONTACT SURFACE ON SAID SUPPORT BODY, THE LATERAL PROJECTION ON THE SUPPORT BODY ENTERING INTO THE SECOND RECESS; A CLAMPING SCREW EXTENDING FROM THE FRONT SURFACE AND HOLDING SAID PROJECTION CLAMPED IN SAID SECOND RECESS, THE INSERT BEING CLAMPED IN THE SUPPORT BODY BY INDEPENDENT CLAMPING MEANS, THE SUPPORT BODY AND THE CLAMPED INSERT FORMING AN ASSEMBLY REMOVABLE FROM SAID DRILL AS A UNIT.
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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |