US3834207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for forming an accurately dimensioned metal strip having varying thickness
Assignee: Akzo America Inc
•
Filing: 1972-08-30
•
Granted: 1974-09-10
•
Expires: 1992-08-30
Abstract
Abstract A method and apparatus for forming an accurately dimensioned metal strip having a plurality of thicknesses in which a feed strip is passed through a pair of work rolls, one or both of which has a raised portion for forming the desired shape during the reduction, wherein both work rolls are supported by back-up rolls which rotate in engagement with the work rolls with one or both of the back-up rolls having a notched recess to accommodate raised portions of the work roll.
Inventors
- 👤 R Laigle
- 👤 A Rakich
- 👤 W Sivakoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:37
CPC Classifications
B; B21; B21B; B21B13/00; B21B13/14; B21B1/00; B21B1/08; B21B1/0815; B21B27/00; B21B27/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
185 words
A method of producing an accurately dimensioned metal strip which varies in thickness comprising a. introducing a feed strip having substantially the same overall cross sectional configuration as that of the finished strip to be formed between two work rolls mounted for rotation about substantially parallel axis, at least one of which rolls has spaced-apart portions of Selected diameter and has an intermediate raised portion with a diameter greater than the selected diameter; b. supporting each work roll with a back-up roll which back-up rolls are positioned to engage and apply pressure to the spaced-apart portions of the work rolls; c. employing back-up rolls to engage said work rolls through the end portions of the back-up rolls, said back-up rolls having a notched recess intermediate of said end portions to accommodate the raised portion protruding beyond the surface defined by the end portions of a work roll, said notched recess and accommodated raised portion spaced apart one from the other; and d. driving one or more of said rolls to cause the strip to move through the work rolls and be accurately reduced and reformed.
Claim 2
Independent Claim
185 words
A method of producing an accurately dimensioned metal strip which varies in thickness comprising a. introducing a feed strip having substantially the same overall cross sectional configuration as that of the finished strip to be formed between two work rolls mounted for rotation about substantially parallel axis, at least one of which rolls has spaced-apart portions of Selected diameter and has an intermediate raised portion with a diameter greater than the selected diameter; b. supporting each work roll with a back-up roll which back-up rolls are positioned to engage and apply pressure to the spaced-apart portions of the work rolls; c. employing back-up rolls to engage said work rolls through the end portions of the back-up rolls, said back-up rolls having a notched recess intermediate of said end portions to accommodate the raised portion protruding beyond the surface defined by the end portions of a work roll, said notched recess and accommodated raised portion spaced apart one from the other; and d. driving one or more of said rolls to cause the strip to move through the work rolls and be accurately reduced and reformed.
Claim 3
Dependent Claim
117 words
Apparatus for rolling a feed strip to form an accurately dimensioned finished strip having varying thickness comprising a. a pair of work rolls mounted for rotation about substantially parallel axes with one such roll having i. a raised portion; and ii. two end portions on either side of the raised portion; b. a notched back-up roll having a notched recess to accommodate the said raised portion which back-up roll is positioned to engage the end portions of the raised-portion roll to provide support for the work roll and which notched recess is shaped to accommodate the raised portion without engagement with said portion; and c. a back-up roll supporting the work roll adjacent the notched work roll.
Claim 4
Dependent Claim
117 words
Apparatus for rolling a feed strip to form an accurately dimensioned finished strip having varying thickness comprising a. a pair of work rolls mounted for rotation about substantially parallel axes with one such roll having i. a raised portion; and ii. two end portions on either side of the raised portion; b. a notched back-up roll having a notched recess to accommodate the said raised portion which back-up roll is positioned to engage the end portions of the raised-portion roll to provide support for the work roll and which notched recess is shaped to accommodate the raised portion without engagement with said portion; and c. a back-up roll supporting the work roll adjacent the notched work roll.
Claim 5
Dependent Claim
11 words
The apparatus of claim 2 in which selected rolls are driven.
References Cited (Backward Citations)
US1900032A
Cited
US1997871A
Cited
US1915084A
Cited
US2271459A
Cited
US3446048A
Cited
US3488989A
Cited
US3593556A
Cited
US3765213A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |