US3767554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic electroplating barrel
Assignee: Westlake Plastics Co
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Filing: 1972-07-31
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Granted: 1973-10-23
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Expires: 1992-07-31
Abstract
Abstract A polyhedral rotatable electroplating barrel having axial ribs and end heads made of a thermoplastic in which fiberglass strands are embedded beneath the outer surfaces thereof to provide support members having high deflection temperatures, tensile and flexural strengths and perforate panels made of a filled thermoplastic resin whose deflection temperature approaches that of the material for the ribs and heads and means interconnecting the ribs, heads and panels whereby a good load-supporting barrel is provided which is resistant to attack by the electroplating solutions and will not distort at operating temperatures of about 180*-200*F.
Inventors
- 👤 W Noonan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:57
CPC Classifications
C; C25; C25D; C25D17/00; C25D17/16; C25D17/18; C25D17/20
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
26 words
The barrel of claim 1 wherein said fiberglass-filled resin is polypropylene containing glass strands embedded therein having surface areas which are free of the glass strands.
Claim 2
Dependent Claim
27 words
The barrel of claim 2 wherein the polypropylene contains 10-20 percent by weight of the fiberglass strands having a deflection temperature at 264 psi of about 280*-305*F.
Claim 3
Dependent Claim
20 words
The barrel of claim 2 wherein the mineral-filled thermoplastic resin of which the perforate panels are made is asbestos-filled polypropylene.
Claim 4
Dependent Claim
30 words
The barrel of claim 3 wherein the mineral-filled thermoplastic resin of which the perforate panels are made is asbestos-filled polypropylene having a deflection temperature at 264 psi of about 190*F.
Claim 5
Dependent Claim
20 words
The barrel of claim 2 wherein the mineral-filled thermoplastic resin of which the perforate panels are made is talc-filled polypropylene.
Claim 6
Dependent Claim
30 words
The barrel of claim 3 wherein the mineral-filled thermoplastic resin of which the perforate panels are made is talc-filled polypropylene having a deflection temperature at 264 psi of about 177*F.
Claim 7
Dependent Claim
21 words
The barrel of claim 2 wherein the minEral-filled thermoplastic resin of which the perforate panels are made is titanium dioxide-filled polypropylene.
Claim 8
Dependent Claim
31 words
The barrel of claim 3 wherein the mineral-filled thermoplastic resin of which the perforate panels are made is titanium dioxide-filled polypropylene having a deflection temperature at 264 psi of about 220*F.
Claim 9
Dependent Claim
135 words
A polyhedral electroplating barrel comprising axially extending perforate panels made of mineral-filled polypropylene and forming the sides of the barrel, axially extending ribs forming the corners of the barrel and having grooves opening at the included angle of the polyhedron through the sides of each rib and receiving the side edges of said panels and end heads having interconnected recesses and grooves opening through their inner surfaces and corresponding to and receiving the ends of said ribs and panels respectively, said ribs and heads being made of fiberglass-filled polypropylene wherein the strands of fiberglass are embedded in the polypropylene so that surface areas are free of the strands, the grooves in the ribs and the recesses and grooves in the heads being provided in the surface areas thereof which are free of the fiberglass strands.
Claim 10
Dependent Claim
26 words
The barrel of claim 10 wherein the fiberglass-filled polypropylene includes 10-20 percent by weight of fiberglass and a deflection temperature at 264 psi of about 280*-305*F.
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) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |