Patent US3655489A successfully refreshed from Google Patents.
US3655489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Winding and feeding mandrel for forming tubing from strip material
Assignee: Individual
•
Filing: 1969-05-14
•
Granted: 1972-04-11
•
Expires: 1989-05-14
Abstract
Abstract An apparatus for helically winding a strip forming the revolving surface of a winding mandrel at a pitch corresponding to the strip width, including a plurality of strip supports distributed about the winding axis of the mandrel, extending parallel thereto, spaced equally therefrom and adapted to rotate about the axis, and a stationary strip guide ring mounted concentrically with the convolutions.
Inventors
- 👤 Peder Ulrik Poulsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:51
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/56; B29C53/58; B29C53/74; B65; B65H; B65H81/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
200 words
An apparatus for the helical winding of a strip material forming the revolving surface of a winding mandrel at a pitch corresponding to the strip width, comprising; a plurality of strip support means; means mounting the strip support means about the winding axis, said strip support means extending parallel thereto and spaced equally therefrom; means to rotate said strip support means about said axis; stationary strip guide ring means mounted concentrically with the strip convolutions; slide means positioned in proximity to where the winding of the strip extends onto the strip support means, said slide means being reciprocatable in the longitudinal direction of said strip support means on dovetailed guides attached to the strip support means and being disposed radially inwardly of the strip convolutions, each said slide means comprising a rigidly mounted, radially outwardly extending thrust member adapted to engage the rear edge of the first strip convolution; follower roller means trailing said thrust member, said follower roller means being adapted to cooperate with said stationary guide ring means, said guide ring means having a pitch corresponding to the pitch of the strip convolutions; and spring means adapted to urge each said slide means towards the guide ring means.
Claim 2
Independent Claim
200 words
An apparatus for the helical winding of a strip material forming the revolving surface of a winding mandrel at a pitch corresponding to the strip width, comprising; a plurality of strip support means; means mounting the strip support means about the winding axis, said strip support means extending parallel thereto and spaced equally therefrom; means to rotate said strip support means about said axis; stationary strip guide ring means mounted concentrically with the strip convolutions; slide means positioned in proximity to where the winding of the strip extends onto the strip support means, said slide means being reciprocatable in the longitudinal direction of said strip support means on dovetailed guides attached to the strip support means and being disposed radially inwardly of the strip convolutions, each said slide means comprising a rigidly mounted, radially outwardly extending thrust member adapted to engage the rear edge of the first strip convolution; follower roller means trailing said thrust member, said follower roller means being adapted to cooperate with said stationary guide ring means, said guide ring means having a pitch corresponding to the pitch of the strip convolutions; and spring means adapted to urge each said slide means towards the guide ring means.
Claim 3
Dependent Claim
77 words
An apparatus as claimed in claim 1 wherein said guide ring means is formed with predetermined pitch, the pitch over a short length from approximately the point where the winding of the strip starts, being slightly larger than the pitch of the strip, the pitch of said ring means converges with the pitch of the strip until just short of initial winding of the strip, and extending at a constant pitch toward the strip winding starting point.
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) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |