Patent US4002540A successfully refreshed from Google Patents.
US4002540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screen having parallel slots
Assignee: Hendrick Manufacturing Co
•
Filing: 1975-06-16
•
Granted: 1977-01-11
•
Expires: 1995-06-16
Abstract
Abstract An industrial screen of the type having generally parallel wires looped about transverse support rods has chromium plated to at least the surfaces of the wire elements which contact one another in use. In the preferred embodiment hard chrome plating of entire wire elements is utilized.
Inventors
- 👤 Leon C. Bixby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:51
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/46; B07B1/4609; B07B1/4681
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
86 words
In the method of forming an interflexing screen which may be vibrated in use which comprises the steps of forming loops spaced apart along the length of a plurality of wires, and assembling said wires on support rods passing through said loops, the improvement including the step of lubricating the surfaces of said wires which will contact adjacent wires after the foregoing assembly by electrolytically depositing hard chrome on said screen wires after the same are looped and before the same are assembled into a screen.
Claim 2
Dependent Claim
86 words
In the method of forming an interflexing screen which may be vibrated in use which comprises the steps of forming loops spaced apart along the length of a plurality of wires, and assembling said wires on support rods passing through said loops, the improvement including the step of lubricating the surfaces of said wires which will contact adjacent wires after the foregoing assembly by electrolytically depositing hard chrome on said screen wires after the same are looped and before the same are assembled into a screen.
Claim 3
Dependent Claim
22 words
The method of claim 1 wherein the hard chrome deposited on said screen wires has a thickness of at least 0.003 inch.
Claim 4
Independent Claim
113 words
A method of forming an interflexing screen of the type having plural screen wires arranged side by side, each screen wire having plural loops formed therein, each wire at loop crossover points being coined to form shoulders, the wires being assembled on support rods passing through the loops of adjacent wires with the shoulders of adjacent wires in abutment with one another, the screen wires being vibrated in use, the improvement including electrolytically depositing hard chrome on said wires after the loops are formed and the wires coined and before the same are assembled onto the support rods so that the wires including the shoulders thereof are coated by a hard chrome surface.
Claim 5
Independent Claim
113 words
A method of forming an interflexing screen of the type having plural screen wires arranged side by side, each screen wire having plural loops formed therein, each wire at loop crossover points being coined to form shoulders, the wires being assembled on support rods passing through the loops of adjacent wires with the shoulders of adjacent wires in abutment with one another, the screen wires being vibrated in use, the improvement including electrolytically depositing hard chrome on said wires after the loops are formed and the wires coined and before the same are assembled onto the support rods so that the wires including the shoulders thereof are coated by a hard chrome surface.
Claim 6
Dependent Claim
22 words
The method of claim 3 wherein the hard chrome deposited on said screen wires has a thickness of at least 0.003 inch.
References Cited (Backward Citations)
GB331196A
Cited
US2690265A
Cited
US2824830A
Cited
US3037630A
Cited
US3116239A
Cited
US3425900A
Cited
US3640760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-11 | 1980-07-12 | 1981-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-11 | 1984-07-12 | 1985-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-11 | 1988-07-12 | 1989-01-11 | $7700.00 | Window Closed / Lapsed |