US3716470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroplating barrel constructed from two disparate plastics
Assignee: Westlake Plastics Co
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Filing: 1971-06-08
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Granted: 1973-02-13
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Expires: 1991-06-08
Abstract
Abstract A polyhedral rotatable electroplating barrel in which the axial ribs or struts and end heads are made of a thermoplastic resin whose deflection temperature as well as tensile and flexural strengths exceeds those of the thermoplastic resin used for the perforate panels with means interconnecting the ribs, heads and panels so that the panels are free to expand without buckling in all three dimensions into grooves in the ribs and heads.
Inventors
- 👤 W Noonan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:59
CPC Classifications
C; C25; C25D; C25D17/00; C25D17/16; C25D17/18; C25D17/20
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
211 words
A polyhedral electroplating barrel comprising axially extending perforate panels forming the sides thereof, axially extending ribs forming the corners thereof, and heads secured to said ribs, means loosely supporting the side edges of said panels in said ribs including grooves in said ribs receiving the side edges of said panels so that for each panel a space is provided between one faCe of the panel and the corresponding wall of the groove and between one side edge of the panel and the corresponding wall of the groove, and means loosely supporting the end edges of said panels in said heads, including grooves on the inner surface of said heads receiving the end edges of panels so that for each panel a space is provided between one end edge of the panel and the corresponding wall of the head groove and between one face of the panel and the corresponding wall of the head groove, said ribs and heads being made of a thermoplastic resin whose deflection temperature, flexural and tensile strengths exceed those of the resin from which the perforate panels are made so that when the barrel is operated in the temperature range of about 180*- 200*F., the panels will expand relative to the ribs and heads and not buckle.
Claim 2
Dependent Claim
211 words
A polyhedral electroplating barrel comprising axially extending perforate panels forming the sides thereof, axially extending ribs forming the corners thereof, and heads secured to said ribs, means loosely supporting the side edges of said panels in said ribs including grooves in said ribs receiving the side edges of said panels so that for each panel a space is provided between one faCe of the panel and the corresponding wall of the groove and between one side edge of the panel and the corresponding wall of the groove, and means loosely supporting the end edges of said panels in said heads, including grooves on the inner surface of said heads receiving the end edges of panels so that for each panel a space is provided between one end edge of the panel and the corresponding wall of the head groove and between one face of the panel and the corresponding wall of the head groove, said ribs and heads being made of a thermoplastic resin whose deflection temperature, flexural and tensile strengths exceed those of the resin from which the perforate panels are made so that when the barrel is operated in the temperature range of about 180*- 200*F., the panels will expand relative to the ribs and heads and not buckle.
Claim 3
Dependent Claim
23 words
The barrel of claim 1 wherein said perforate panels are made of polypropylene and said ribs and heads are made of glass-filled polypropylene.
Claim 4
Dependent Claim
23 words
The barrel of claim 1 wherein said perforate panels are made of polypropylene and said ribs and heads are made of asbestos-filled polypropylene.
Claim 5
Dependent Claim
23 words
The barrel of claim 1 wherein said perforate panels are made of polypropylene and said ribs and heads are made of talc-filled polypropylene.
Claim 6
Dependent Claim
36 words
The barrel of claim 2 wherein said glass-filled polypropylene contains fiber glass strands embedded in the resin with no glass strands exposed at the surface of said ribs and heads to thereby prevent attack by fluorides.
Claim 7
Dependent Claim
17 words
The barrel of claim 5 wherein said glass-filled polypropylene contains 10- 20 percent by weight of glass.
Claim 8
Dependent Claim
99 words
The barrel of claim 1 wherein said means loosely supporting the side edges of said panels in said ribs includes substantially U-shaped grooves coextensive with and opening through the sides thereof at an angle to each other substantially that of the included angle of the polyhedron, each groove exceeding the thickness of a panel and being of such depth that the distance between the inner end or web surface of one groove receiving a panel and the inner end or web surface of the groove of the next rib receiving the same panel exceeds the width of the panel.
Claim 9
Dependent Claim
81 words
The barrel of claim 7 wherein said means loosely supporting the end edges of said panels in said heads includes grooves in the inner surfaces of said heads of the same shape as said panels but exceeding their thickness, the distance between the inner end surface or web of the groove of one head receiving a panel and the inner end surface or web of the groove of the other head receiving the same panel exceeding the length of said panel.
Claim 10
Dependent Claim
36 words
The barrel of claim 8 wherein said glass-filled polypropylene contains fiber glass strands embedded in the resin with no glass strands exposed at the surface of said ribs and heads to thereby prevent attack by fluorides.
Claim 11
Dependent Claim
17 words
The barrel of claim 9 wherein said glass-filled polypropylene contains 10- 20 percent by weight of glass.
Claim 12
Dependent Claim
48 words
The barrel of claim 9 wherein said inner surfaces of said heads also include recesses corresponding in shape to said ribs, said panel grooves in said inner surfaces communicating with and interconnecting said recesses so that said ribs and panels are received in said recesses and grooves respectively.
References Cited (Backward Citations)
US3084916A
Cited
US3442783A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |