Patent US3804574A successfully refreshed from Google Patents.
US3804574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for sizing shaped articles
Assignee: Individual
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Filing: 1972-12-07
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Granted: 1974-04-16
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Expires: 1992-12-07
Abstract
Abstract Apparatus for sizing cellular shaped articles in which a sizing fixture having a continuous sized and shaped passage is mounted within a fluid contained vacuum chamber by having one of a plurality of separable parts thereof secured fluid tight to the inside of the chamber and other parts thereof separably connectible with the secured part and thereby automatically positioned for fluid-tight engagement with and within the chamber.
Inventors
- 👤 C Gatto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:26
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/36; B29C44/46; B29C44/50; B29C48/00; B29C48/03; B29C48/07; B29C48/12; B29C48/25; B29C48/88; B29C48/90; B29C48/901; B29C48/903; B29C48/911; B29C48/9135; B29C48/915; B29C48/916; B29C48/885; B29C48/904; B29C48/905; B29C48/9115; B29C48/912; B29C48/919
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
173 words
An apparatus for sizing plastic articles comprising a substantially fluid-tight chamber having inlet and outlet walls thereof through which a plastic extrusion is adapted to move, said walls having a respective inlet and outlet opening, said inlet wall having a seat defined in one side thereof circumposed about said inlet opening, a fluid seal in said seat, a sizing fixture having at least two separable parts thereof which when assembled together within said chamber automatically fully cover and engage fluid-tightly with said fluid seal, means to secure one of said parts to said one side of said inlet wall in continuous fluid-tight covering relation with a portion of said seal, means on said one part and the other separable part cooperable to secure said parts together and to position said other part against said one side of said inlet wall in fluid-tight covering relation with the remaining portion of said seal, said secured parts of said sizing fixture having a passage defined therein between said inlet and outlet openings and their respective walls.
Claim 2
Independent Claim
173 words
An apparatus for sizing plastic articles comprising a substantially fluid-tight chamber having inlet and outlet walls thereof through which a plastic extrusion is adapted to move, said walls having a respective inlet and outlet opening, said inlet wall having a seat defined in one side thereof circumposed about said inlet opening, a fluid seal in said seat, a sizing fixture having at least two separable parts thereof which when assembled together within said chamber automatically fully cover and engage fluid-tightly with said fluid seal, means to secure one of said parts to said one side of said inlet wall in continuous fluid-tight covering relation with a portion of said seal, means on said one part and the other separable part cooperable to secure said parts together and to position said other part against said one side of said inlet wall in fluid-tight covering relation with the remaining portion of said seal, said secured parts of said sizing fixture having a passage defined therein between said inlet and outlet openings and their respective walls.
Claim 3
Dependent Claim
45 words
An apparatus for sizing plastic articles as in claim 1, said one side of said inlet wall being the interior side of said chamber, and said parts of said sizing fixture being secured together to fully cover and define a fluid-tight connection with said seal.
Claim 4
Dependent Claim
29 words
An apparatus as in claim 2, said sizing fixture passage having an entrance positioned within said inlet opening, and said passage being aligned between said inlet and outlet openings.
Claim 5
Dependent Claim
46 words
An apparatus for sizing plastic articles as in claim 2, said seal being spaced from said fluid inlet opening, said parts of said sizing fixture each having a radially disposed sealing flange of sufficient extent to fully cover and form a fluid-tight connection with said seal.
Claim 6
Dependent Claim
30 words
An apparatus as in claim 3, said passage extending for the length of said sizing fixture and being of substantially the Same size and shape for the full extent thereof.
Claim 7
Dependent Claim
31 words
An apparatus as in claim 5, the size and shape of said passage being substantially that of the finished plastic article with the defining walls of said passage being relatively smooth.
Claim 8
Dependent Claim
44 words
An apparatus as in claim 5, fluid communicating means defined in said sizing fixture to provide for communication of fluid to and from said passage, said fluid communication means being relatively spaced along the extent of said sizing fixture and said passage defined therein.
Claim 9
Dependent Claim
146 words
In an apparatus for sizing plastic articles in a substantially fluid-tight chamber, an inlet wall forming a part of said chamber, an inlet opening defined in and extending through said inlet wall to provide through movement of plastic articles into said chamber, a fluid seal positioned about said inlet opening and mounted on the interior side of said inlet wall, a sizing fixture having at least two separable parts each of which combined in assembly fluid-tightly cover said inlet opening and engage said fluid seal on the interior side of said inlet wall, means on one of said parts to releasably secure the same to the interior side of said inlet wall in fluid-tight engagement with said fluid seal, and means on said separable parts to releasably secure the same together to releasably secure the other of said parts in fluid-tight engagement with said fluid seal.
Claim 10
Dependent Claim
146 words
In an apparatus for sizing plastic articles in a substantially fluid-tight chamber, an inlet wall forming a part of said chamber, an inlet opening defined in and extending through said inlet wall to provide through movement of plastic articles into said chamber, a fluid seal positioned about said inlet opening and mounted on the interior side of said inlet wall, a sizing fixture having at least two separable parts each of which combined in assembly fluid-tightly cover said inlet opening and engage said fluid seal on the interior side of said inlet wall, means on one of said parts to releasably secure the same to the interior side of said inlet wall in fluid-tight engagement with said fluid seal, and means on said separable parts to releasably secure the same together to releasably secure the other of said parts in fluid-tight engagement with said fluid seal.
Claim 11
Dependent Claim
53 words
In an apparatus as in claim 8, a recess in the interior side of said inlet wall about said inlet opening, said fluid seal being supported in said recess and projecting beyond said interior side of said inlet wall, and said two parts having complemental flanges for fluid-tight engagement with said fluid seal.
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) | 1977-04-15 | 1977-10-15 | 1978-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-15 | 1981-10-15 | 1982-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-15 | 1985-10-15 | 1986-04-16 | $7700.00 | Window Closed / Lapsed |