Patent US3799518A successfully refreshed from Google Patents.
US3799518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire drawing annealers
Assignee: Anaconda Co
•
Filing: 1973-01-04
•
Granted: 1974-03-26
•
Expires: 1993-01-04
Abstract
Abstract In a wire drawing resistance annealer a guide sheave is obliquely mounted on a horizontal axis upstream of the first contact pulley so that essentially all points of the pulley surface are contacted by the wire.
Inventors
- 👤 A Barone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:44
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/52; C21D9/54; C21D9/56; C21D9/62
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
92 words
In an apparatus for continuously resistance-annealing wire directly downstream of a wire drawing machine comprising first and second contact pulleys mounted on horizontal axes for introducing heating current into said wire, the upstream of said pulleys having a contact surface at least several times wider than the diameter of said wire, the improvement comprising: A. a guide sheave for said wire mounted directly upstream of said upstream pulley, B. said sheave being mounted obliquely on a horizontal axis, thereby directing said wire to contact different points across the width of said surface.
Claim 2
Dependent Claim
92 words
In an apparatus for continuously resistance-annealing wire directly downstream of a wire drawing machine comprising first and second contact pulleys mounted on horizontal axes for introducing heating current into said wire, the upstream of said pulleys having a contact surface at least several times wider than the diameter of said wire, the improvement comprising: A. a guide sheave for said wire mounted directly upstream of said upstream pulley, B. said sheave being mounted obliquely on a horizontal axis, thereby directing said wire to contact different points across the width of said surface.
Claim 3
Dependent Claim
20 words
The improvement of claim 1 wherein said sheave has a diameter substantially less than the diameter of said upstream pulley.
Claim 4
Dependent Claim
22 words
The improvement of claim 2 wherein the circumference of said sheave is not integrally divisible into the circumference of said upstream pulley.
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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |