Patent US3748710A successfully refreshed from Google Patents.
US3748710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool bit holder
Assignee: Individual
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Filing: 1971-09-20
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Granted: 1973-07-31
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Expires: 1991-09-20
Abstract
Abstract This invention provides a holder for throw-away carbide tool bits useful for machining operations including cut-off, turning, facing, boring and the like. The holder comprises: an elongated shank; and a generally axially extending reentrant slot recessed in a surface of the shank, the slot having side edges tapered outwardly from the outer to the inner part of the slot, whereby a tool bit having corresponding tapered edges can be removably inserted into the slot.
Inventors
- 👤 F Lynch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:18
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/08; B23B2205/00; B23B2205/02; Y; Y10; Y10T; Y10T407/00; Y10T407/22; Y10T407/2266; Y10T407/25
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
79 words
A holder for throw-away carbide tool bits, said holder comprising: an elongated shank, and a generally axially extending reentrant slot recessed in a longitudinal side surface of said shank and open to one end of said shank, said slot having side edges tapered outwardly from the outer to the inner part of said slot and also being longitudinally tapered inwardly from said one end, whereby a tool bit having corresponding tapered edges can be removably inserted into said slot.
Claim 2
Dependent Claim
79 words
A holder for throw-away carbide tool bits, said holder comprising: an elongated shank, and a generally axially extending reentrant slot recessed in a longitudinal side surface of said shank and open to one end of said shank, said slot having side edges tapered outwardly from the outer to the inner part of said slot and also being longitudinally tapered inwardly from said one end, whereby a tool bit having corresponding tapered edges can be removably inserted into said slot.
Claim 3
Dependent Claim
33 words
A holder according to claim 1, wherein the side edges of said slot are longitudinally tapered inwardly from said end of said shank at an angle of between about 1* and about 2*.
Claim 4
Dependent Claim
25 words
A holder according to claim 1, wherein the side edges of said slot are outwardly tapered at an angle of between about 20* and 30*.
Claim 5
Dependent Claim
28 words
A holder according to claim 1, wherein said slot is recessed in said surface of said shank between about 1/4 and about 1/2 the thickness of said shank.
Claim 6
Dependent Claim
30 words
A holder according to claim 1, wherein the side edges of said slot are respectively arranged at an angle of about 10* with the adjacent side edges of said shank.
Claim 7
Dependent Claim
87 words
A holder for throw-away carbide tool bits, said holder comprising: an elongated shank having a diagonal end, and a generally axially extending reentrant slot recessed in a surface of said shank and open to said diagonal end, said slot having side edges tapered outwardly from the outer to the inner part of said slot at an angle of between about 20* and about 30* and also longitudinally tapered inwardly from said diagonal end, whereby a tool having corresponding tapered edges can be removably inserted into said slot.
Claim 8
Dependent Claim
87 words
A holder for throw-away carbide tool bits, said holder comprising: an elongated shank having a diagonal end, and a generally axially extending reentrant slot recessed in a surface of said shank and open to said diagonal end, said slot having side edges tapered outwardly from the outer to the inner part of said slot at an angle of between about 20* and about 30* and also longitudinally tapered inwardly from said diagonal end, whereby a tool having corresponding tapered edges can be removably inserted into said slot.
Claim 9
Dependent Claim
31 words
A holder according to claim 6, wherein said side edges of said slot are longitudinally tapered inwardly from said diagonal end at an angle of between about 1* and about 2*.
Claim 10
Dependent Claim
28 words
A holder according to claim 6, wherein said slot is recessed in said surface of said shank between about 1/4 and about 1/2 the thickness of said shank.
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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |