US3558147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cone head
Assignee: ERIKSBERGS MEK VERKSTADS AB
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Filing: 1968-11-19
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Granted: 1971-01-26
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Expires: 1988-11-19
Abstract
Abstract Cone heads for the shaft ends of machine tools are retained by friction within a correspondingly shaped mounting at the end of a driving part. If the tool during use will be subjected to pulling stresses, the friction may be insufficient to retain the tool. In order to obtain a satisfactory locking, the present design proposes the use of a spring washer mounted at the top of the cone head and adapted to engage the internal wall of the mounting when the cone head is introduced therein. A tubular member carried by means at the top of the cone head is designed to exert pressure on the washer to deform the same when it is desired to withdraw the cone head.
Inventors
- 👤 Ture Johansson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:37
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/006; B23B31/02; B23B31/06; B23B2231/00; B23B2231/02; B23B2231/0296; B23B2260/00; B23B2260/136; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17957; Y10T279/17965; Y10T279/17974; Y10T403/00; Y10T403/70; Y10T403/7047
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
147 words
In a cone head adapted to cooperate with a correspondingly shaped passage in a driving mounting: fitting means at the top end of the cone head mounted concentrically with the same; at least one dished spring washer the circumference of which essentially corresponds to that of the top of the cone head retained by the fitting means with its convex surface remote from the cone head; a beveled border portion at the top end of the cone head; a tubular member surrounding the fitting means and adapted to be axially displaced within the mounting to exert pressure on the washer, when it is desired to withdraw the cone head from the mounting; and the angle between the beveled border portion and a plane perpendicular to the longitudinal axis of the shaft being bigger than the angle formed by the surface of the unstressed washer and said plane.
Claim 2
Dependent Claim
147 words
In a cone head adapted to cooperate with a correspondingly shaped passage in a driving mounting: fitting means at the top end of the cone head mounted concentrically with the same; at least one dished spring washer the circumference of which essentially corresponds to that of the top of the cone head retained by the fitting means with its convex surface remote from the cone head; a beveled border portion at the top end of the cone head; a tubular member surrounding the fitting means and adapted to be axially displaced within the mounting to exert pressure on the washer, when it is desired to withdraw the cone head from the mounting; and the angle between the beveled border portion and a plane perpendicular to the longitudinal axis of the shaft being bigger than the angle formed by the surface of the unstressed washer and said plane.
Claim 3
Dependent Claim
59 words
The cone head according to claim 1 in which the fitting means is designed as a bolt having a round head and threaded into an axial bore concentric with the cone head and adapted to resiliently retain the tubular member in such a manner that the latter will be axially displaceable in relation to the head of the bolt.
Claim 4
Dependent Claim
43 words
The cone head acCording to claim 2 in which the bolt head is provided with circumferential groove adapted to receive an open spring ring, the circumference of said spring ring being somewhat bigger than the passage in the bore of the tubular member.
Claim 5
Dependent Claim
49 words
The cone head according to claim 1 in which the relationship between the angle at the washer and the angle at the cone end is about 1:3, the angle at the washer is 3* -9*, preferably 5and the angle at the cone end is 9* - 27*, preferably 15*.
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |