Patent US4576384B1 successfully refreshed from Google Patents.
Patent US3669462A successfully refreshed from Google Patents.
US3669462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three and four leaf machine tool collets
Assignee: Hardinge Inc
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Filing: 1970-04-03
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Granted: 1972-06-13
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Expires: 1990-04-03
Abstract
Abstract A machine tool collet of the three or four leaf type including a cylindrical body having a longitudinal axis, a collet head at the outer end of the body, a plurality of radial slots extending parallel to the longitudinal axis for dividing the body and the head into a plurality of arcuate segments, the slots having a narrow forward portion and an enlarged portion rearwardly of the forward portion, each of the arcuate segments adjacent the enlarged portion of the slots comprising an arcuate distance of approximately 50*. Alternatively, if the arcuate segments are machined to be substantially flat, then the degree of arc of the segments may be as much as approximately 70*.
Inventors
- 👤 Hubert J Parsons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:13
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/20; B23B31/201; B23B31/202; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17411; Y10T279/17471; Y10T279/17478; Y10T279/17529
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
100 words
A machine tool collet including: a. a cylindrical body having a longitudinal axis, b. a collet head at the outer end of said body, c. at least three radial slots extending parallel to said longitudinal axis for dividing said body and said head into a plurality of segments, d. said slots having a narrow forward portion and an enlarged portion adjacent said collet head and rearwardly of said forward portion, e. said enlarged portion being longer than said narrow portion, and f. each of said segments adjacent said enlarged portions of said slots comprising an arcuate distance of approximately 50*.
Claim 2
Dependent Claim
100 words
A machine tool collet including: a. a cylindrical body having a longitudinal axis, b. a collet head at the outer end of said body, c. at least three radial slots extending parallel to said longitudinal axis for dividing said body and said head into a plurality of segments, d. said slots having a narrow forward portion and an enlarged portion adjacent said collet head and rearwardly of said forward portion, e. said enlarged portion being longer than said narrow portion, and f. each of said segments adjacent said enlarged portions of said slots comprising an arcuate distance of approximately 50*.
Claim 3
Dependent Claim
22 words
A machine tool collet as in claim 1 and wherein: a. said enlarged portions of said slots define cutouts in said body.
Claim 4
Dependent Claim
16 words
A machine tool collet as in claim 2 and wherein: a. said cutouts are substantially oval.
Claim 5
Dependent Claim
16 words
A machine tool collet as in claim 2 and wherein: a. said cutouts are substantially rectangular.
Claim 6
Dependent Claim
18 words
A machine tool collet as in claim 2 and including: a. seal means in each of said cutouts.
Claim 7
Dependent Claim
20 words
A machine tool collet as in claim 2 and wherein: a. said plurality of radial slots comprises three radial slots.
Claim 8
Dependent Claim
20 words
A machine tool collet as in claim 2 and wherein: a. said plurality of radial slots comprIses four radial slots.
Claim 9
Dependent Claim
18 words
A machine tool collet as in claim 2 and wherein: a. said cutouts are cut on a radius.
Claim 10
Dependent Claim
19 words
A machine tool collet as in claim 2 and wherein: a. said cutouts are cut with a straight cutter.
Claim 11
Dependent Claim
19 words
A machine tool collet as in claim 2 and wherein: a. said cutouts are cut with an angled cutter.
Claim 12
Dependent Claim
128 words
A machine tool collet including: a. a cylindrical body having a longitudinal axis, b. a collet head at the outer end of said body, c. at least three radial slots extending parallel to said longitudinal axis for dividing said body and said head into a plurality of segments having inner and outer surfaces, d. said slots having narrow forward portions and enlarged portions adjacent said collet head and rearwardly of said forward portions, e. said enlarged portions being longer than said narrow portion, f. each of said segments adjacent said enlarged portions of said slots being machined substantially flat on said outer surface of each of said segments, and g. each of said segments adjacent said enlarged portions of said slots comprising an arcuate distance of approximately 70*.
Claim 13
Dependent Claim
128 words
A machine tool collet including: a. a cylindrical body having a longitudinal axis, b. a collet head at the outer end of said body, c. at least three radial slots extending parallel to said longitudinal axis for dividing said body and said head into a plurality of segments having inner and outer surfaces, d. said slots having narrow forward portions and enlarged portions adjacent said collet head and rearwardly of said forward portions, e. said enlarged portions being longer than said narrow portion, f. each of said segments adjacent said enlarged portions of said slots being machined substantially flat on said outer surface of each of said segments, and g. each of said segments adjacent said enlarged portions of said slots comprising an arcuate distance of approximately 70*.
Claim 14
Dependent Claim
30 words
A machine tool collet as in claim 11 and wherein: a. said inner surface of each of said segments adjacent said enlarged portions of said slots is machined substantially flat.
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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |