Patent US3665744A successfully refreshed from Google Patents.
US3665744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making sleeves
Assignee: Individual
•
Filing: 1970-05-21
•
Granted: 1972-05-30
•
Expires: 1990-05-21
Abstract
Abstract A method and apparatus is disclosed for the formation and production of circumferentially discontinuous thin-wall sleeves from a thin metallic strip.
Inventors
- 👤 Clair M Harter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:23
CPC Classifications
B; B21; B21D; B21D5/00; B21D5/06; B21D5/10; B21D51/00; B21D51/02; B21D51/10; B21D51/16; B21D51/36
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
76 words
The method of producing a thin wall, circumferentially discontinuous sleeve, comprising: inwardly curving the end of a thin metallic strip into a cylindriform body and axisward deflecting the leading end portion of said strip relative the following portion; kerf-cutting said strip transverse its longitudinal axis to sever the cylindriform body from the strip; said kerf-cutting being performed at a location leaving a portion of the strip in overlapping relation to the curved end of the strip.
Claim 2
Independent Claim
76 words
The method of producing a thin wall, circumferentially discontinuous sleeve, comprising: inwardly curving the end of a thin metallic strip into a cylindriform body and axisward deflecting the leading end portion of said strip relative the following portion; kerf-cutting said strip transverse its longitudinal axis to sever the cylindriform body from the strip; said kerf-cutting being performed at a location leaving a portion of the strip in overlapping relation to the curved end of the strip.
Claim 3
Dependent Claim
21 words
The method of claim 1 in which the kerf-cutting is accomplished in a transverse direction paralleling the axis of the body.
Claim 4
Dependent Claim
18 words
The method of claim 2 in which the kerf-cutting is accomplished by the use of a parting tool.
Claim 5
Dependent Claim
117 words
Apparatus for producing a thin wall, circumferentially discontinuous sleeve, comprising: means forming a throat having an outlet; means for intermittently forcefully advancing a predetermined length of thin metallic strip in said throat and through said outlet; means adjacent said outlet operable to pass and curl into a cylindriform body the predetermined length of strip advanced through said outlet, the predetermined length of strip advanced being such that when curled, the leading end of the strip laps a curled portion of the following strip; means to separate said lapped portions by deflection axisward of the leading end; and kerf-cutting means external of said cylindriform body operable to kerf and part said following strip transverse its direction of advancement.
Claim 6
Dependent Claim
117 words
Apparatus for producing a thin wall, circumferentially discontinuous sleeve, comprising: means forming a throat having an outlet; means for intermittently forcefully advancing a predetermined length of thin metallic strip in said throat and through said outlet; means adjacent said outlet operable to pass and curl into a cylindriform body the predetermined length of strip advanced through said outlet, the predetermined length of strip advanced being such that when curled, the leading end of the strip laps a curled portion of the following strip; means to separate said lapped portions by deflection axisward of the leading end; and kerf-cutting means external of said cylindriform body operable to kerf and part said following strip transverse its direction of advancement.
Claim 7
Dependent Claim
28 words
Apparatus according to claim 4 in which the kerf-cutting means is operable to kerf said strip in a transverse direction parallel to the axis of the cylindriform body.
Claim 8
Dependent Claim
23 words
Apparatus according to claim 5 in which the kerf-cutting means comprises a tool operable to remove and curl a portion of said strip.
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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |