US3727680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for finishing patterns and core boxes
Assignee: Deere and Co
•
Filing: 1971-10-04
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Granted: 1973-04-17
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Expires: 1991-10-04
Abstract
Abstract An apparatus for finishing patterns and core boxes which are used under abrasive conditions and in production operations. The invention concerns the formation of an electroless nickel plating on at least the surface portions of the patterns and core boxes which are subject to wear because of repeated contact with molding and core forming materials. The electroless nickel solution is contained in a holding tank comprising a large inert plastic structure supported by surrounding insulating walls. The plastic tank is removable so that a clean tank can be utilized at all times thereby increasing the efficiency and effectiveness of the nickel plating operation. A circulating system including a heat exchanger and filter means is employed to provide maximum efficiency with respect to the use of the plating solution.
Inventors
- 👤 R Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:09
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/1601; C23C18/1619; C23C18/1633; C23C18/1675; C23C18/168; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6579
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
110 words
A construction for applying an electroless nickel plating on surfaces of articles comprising patterns and core boxes designed for use under high pressure conditions in molding and core forming equipment, said construction comprising a large electroless nickel solution holding tank formed of polypropylene, a supporting structure surrounding said tank, said supporting structure comprising an inner wall located adjacent the side walls of said tank, and a spaced apart outer wall surrounding said inner wall, said inner and outer walls each comprising a plastic coating bonded onto a supporting backing the space between said walls providing insulation for said tank, and wherein said tank is removably received within said supporting structure.
Claim 2
Dependent Claim
110 words
A construction for applying an electroless nickel plating on surfaces of articles comprising patterns and core boxes designed for use under high pressure conditions in molding and core forming equipment, said construction comprising a large electroless nickel solution holding tank formed of polypropylene, a supporting structure surrounding said tank, said supporting structure comprising an inner wall located adjacent the side walls of said tank, and a spaced apart outer wall surrounding said inner wall, said inner and outer walls each comprising a plastic coating bonded onto a supporting backing the space between said walls providing insulation for said tank, and wherein said tank is removably received within said supporting structure.
Claim 3
Dependent Claim
104 words
A construction in accordance with claim 1 including circulating means for handling the electroless nickel solution to be used in said tank, said circulating means including a first conduit extending from the bottom of said tank to a pump means, a second conduit extending from said pump means to a heat exchanger, and a third conduit extending from said heat exchanger to a filter, said solution being continuously circulated by said pump from said tank through said first and second conduits, through said heat exchanger, and through said third conduit to said filter, said filter being positioned for discharging said solution into said tank.
Claim 4
Dependent Claim
16 words
A construction in accordance with claim 1 wherein said coating is a glass fiber re-inforced plastic.
Claim 5
Dependent Claim
46 words
A construction in accordance with claim 1 wherein said supporting structure defines an upper wall extending between said inner and outer walls, said tank defining an outwardly extending flange adapted for positioning on said upper wall for thereby locating said tank relative to said supporting structure.
Claim 6
Dependent Claim
40 words
A construction in accordance with claim 1 wherein said supporting structure includes downwardly sloping shoulder portions whereby any solution spilling onto said shoulder portions will be directed away from said tank to thereby avoid contamination of solution in the tank.
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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 |