Patent US3728065A successfully refreshed from Google Patents.
US3728065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the production of tube sockets
Assignee: Inteco Establishment
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Filing: 1970-11-03
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Granted: 1973-04-17
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Expires: 1990-11-03
Abstract
Abstract A device for producing tubular sockets provided with an outwardly extending annular enlargement and made of plastic material comprises a removable annular core having a diameter equal to the desired inner diameter of the socket and a ring on said core for forming said enlargement, said ring being removably mounted on said core. The ring is subdivided into at least three segments which are hingedly connected with each other, except that the abutting ends of two segments are bevelled and form sharp points and are merely clamped together, so that after the removal of the core from the socket which has been molded on the combined core and ring, the latter may be collapsed by swinging the segments of the same inwardly about their hinges into bore of the socket and then may be removed from the bore, because the largest dimension of the collapsed ring is smaller than the diameter of the bore in the socket formed by the cylindrical core.
Inventors
- 👤 E Figwer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:42
CPC Classifications
B; B28; B28B; B28B21/00; B28B21/92; B28B21/98; Y; Y10; Y10S; Y10S425/00; Y10S425/033; Y10S425/218
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
275 words
A device for producing in a plastics material tube socket having at least one open end an annular section of greater interior diameter than the adjoining portions of the socket at both sides of said annular section, comprising a. a cylindrical core member insertible into said tube socket from the open end thereof and having along a main portion of its length an outer diameter equal to the desired inner diameter of a portion of the tube socket extending longitudinally inwardly from the enlarged annular section to be produced, said main portion of the cylindrical core member also extending longitudinally outwardly through the width of said enlarged annular section and having at the outwardly end of said extension an annular shoulder of greater diameter than said main portion of the cylindrical core member but not greater than the open end portion of the tube socket, b. an annular core member surrounding said outwardly extension of the cylindrical core member and having a cross-section corresponding to that of said annular section of the tube socket, said annular core member abutting said annular shoulder and comprising at least three arcuate segments covering adjoining portions of the circumference of said extension of the main portion of the cylindrical core member and consisting at least partially of ferromagnetic material, and c. permanent magnets imbedded in said cylindrical core member for retaining said arcuate segments in operating position, whereby upon formation of said enlarged annular section in plastic condition of the tube socket material said cylindrical core member may be withdrawn and said annular core member may be collapsed and withdrawn from the tube socket through said open end thereof.
Claim 2
Independent Claim
275 words
A device for producing in a plastics material tube socket having at least one open end an annular section of greater interior diameter than the adjoining portions of the socket at both sides of said annular section, comprising a. a cylindrical core member insertible into said tube socket from the open end thereof and having along a main portion of its length an outer diameter equal to the desired inner diameter of a portion of the tube socket extending longitudinally inwardly from the enlarged annular section to be produced, said main portion of the cylindrical core member also extending longitudinally outwardly through the width of said enlarged annular section and having at the outwardly end of said extension an annular shoulder of greater diameter than said main portion of the cylindrical core member but not greater than the open end portion of the tube socket, b. an annular core member surrounding said outwardly extension of the cylindrical core member and having a cross-section corresponding to that of said annular section of the tube socket, said annular core member abutting said annular shoulder and comprising at least three arcuate segments covering adjoining portions of the circumference of said extension of the main portion of the cylindrical core member and consisting at least partially of ferromagnetic material, and c. permanent magnets imbedded in said cylindrical core member for retaining said arcuate segments in operating position, whereby upon formation of said enlarged annular section in plastic condition of the tube socket material said cylindrical core member may be withdrawn and said annular core member may be collapsed and withdrawn from the tube socket through said open end thereof.
Claim 3
Independent Claim
285 words
A device for producing in a plastics material tube socket having at least one open end an annular section of greater interior diameter than the adjoining portions of the socket at both sides of said annular section, comprising a. a cylindrical core member insertible into said tube socket from the open end thereof and having along a main portion of its length an outer diameter equal to the desired inner diameter of a portion of the tube socket extending longitudinally inwardly from the enlarged annular section to be produced, said main portion of the cylindrical core member also extending longitudinally outwardly through the width of said enlarged annular section and having at the outwardly end of said extension an annular shoulder of greater diameter than said main portion of the cylindrical core member but not greater than the open end portion of the tube socket, b. an annular core member surrounding said outwardly extension of the cylindrical core member and having a cross-section corresponding to that of said annular section of the tube socket, said annular core member abutting said annular shoulder and comprising at least three arcuate segments covering adjoining portions of the circumference of said extension of the main portion of the cylindrical core member, and c. articulate connection means between said arcuate segments of the annular core member at all but one of the joints between them to enable collapsing movement in an inwardly direction of said annular core member, whereby upon formation of said enlarged annular section in plastic condition of the tube socket material said cylindrical core member may be withdrawn and said annular core member may be collapsed and withdrawN from the tube socket through said open end thereof.
Claim 4
Independent Claim
285 words
A device for producing in a plastics material tube socket having at least one open end an annular section of greater interior diameter than the adjoining portions of the socket at both sides of said annular section, comprising a. a cylindrical core member insertible into said tube socket from the open end thereof and having along a main portion of its length an outer diameter equal to the desired inner diameter of a portion of the tube socket extending longitudinally inwardly from the enlarged annular section to be produced, said main portion of the cylindrical core member also extending longitudinally outwardly through the width of said enlarged annular section and having at the outwardly end of said extension an annular shoulder of greater diameter than said main portion of the cylindrical core member but not greater than the open end portion of the tube socket, b. an annular core member surrounding said outwardly extension of the cylindrical core member and having a cross-section corresponding to that of said annular section of the tube socket, said annular core member abutting said annular shoulder and comprising at least three arcuate segments covering adjoining portions of the circumference of said extension of the main portion of the cylindrical core member, and c. articulate connection means between said arcuate segments of the annular core member at all but one of the joints between them to enable collapsing movement in an inwardly direction of said annular core member, whereby upon formation of said enlarged annular section in plastic condition of the tube socket material said cylindrical core member may be withdrawn and said annular core member may be collapsed and withdrawN from the tube socket through said open end thereof.
Claim 5
Dependent Claim
30 words
A device as claimed in claim 2, including a releasable pull connection at the free ends of said arcuate segments which pull connection is independent of said cylindrical core member.
Claim 6
Dependent Claim
44 words
A device as claimed in claim 2, in which at least one of the free ends of the two interengaging arcuate segments of said annular core member terminates in a sharp edge in the region of the outer circumference of said annular core member.
Claim 7
Dependent Claim
48 words
A device as claimed in claim 2, in which the plane of the interengagement surfaces of the free ends of said arcuate segments defines with the secant line connecting the adjacent articulate connection means with the innermost edge of said interengagement surfaces an angle of less than 90*.
Claim 8
Dependent Claim
37 words
A device as claimed in claim 2, in which said arcuate segments consist at least partially of ferromagnetic material, while permanent magnets are imbedded in said cylindrical core member for retaining said arcuate segments in operating position.
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) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |