Patent US3797665A successfully refreshed from Google Patents.
US3797665A
Expired / Lapsed
US
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Screen changer
Assignee: Berlyn Corp
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Filing: 1972-11-20
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Granted: 1974-03-19
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Expires: 1992-11-20
Abstract
Abstract A screen changer wherein sealing pressure is obtained against a breaker plate and filter screen element by providing a screw adjustment from an external adapter which bears against a sealing bearing. The sealing bearing bears against a slide plate carrying the breaker plate to provide a simple and effective externally controllable sealing pressure engagement.
Inventors
- 👤 J Paquette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:54
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/10; D01D1/106; B; B29; B29C; B29C48/00; B29C48/25; B29C48/254; B29C48/36; B29C48/50; B29C48/69; B29C48/691; B29C48/6912; B29C48/03
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
168 words
An apparatus to filter contaminants from a heat-softened material comprising, a housing, said housing including a first passage therethrough through which said heat-softened material is forced to flow, said housing including a second passage therethrough intersecting said first passage, a slide plate disposed within said second passage, said slide plate including an opening therein disposed in register with said first passage in said housing, filter means disposed within said opening in said slide plate to filter said heat-softened material flowing through said first passage, a sleeve member having an axial passage therethrough disposed within said first passage on the upstream side of said slide plate, said sleeve member having one end thereof disposed in sealing relationship with said opening in said slide plate and having its other end extending beyond the surface of said housing, and means disposed exterior said housing adapted to contact said sleeve member other end and impart sealing force thereto to insure sealing bearing of said sleeve member one end with said slide plate.
Claim 2
Independent Claim
168 words
An apparatus to filter contaminants from a heat-softened material comprising, a housing, said housing including a first passage therethrough through which said heat-softened material is forced to flow, said housing including a second passage therethrough intersecting said first passage, a slide plate disposed within said second passage, said slide plate including an opening therein disposed in register with said first passage in said housing, filter means disposed within said opening in said slide plate to filter said heat-softened material flowing through said first passage, a sleeve member having an axial passage therethrough disposed within said first passage on the upstream side of said slide plate, said sleeve member having one end thereof disposed in sealing relationship with said opening in said slide plate and having its other end extending beyond the surface of said housing, and means disposed exterior said housing adapted to contact said sleeve member other end and impart sealing force thereto to insure sealing bearing of said sleeve member one end with said slide plate.
Claim 3
Dependent Claim
59 words
Apparatus as defined in claim 1 wherein said means disposed exterior said housing comprises an adapter member provided with a passage therethrough in register with said axial passage of said sleeve member and including a radially outwardly extending flange segment thereabout, means engageable between said flange segment and said housing to apply inward sealing force against said sleeve member.
Claim 4
Dependent Claim
94 words
Apparatus as defined in claim 2 wherein said flange segment includes a plurality of circumferentially spaced bolt receiving apertures therethrough, said housing including a plurality of threaded bolt receiving bores in register with said bolt receiving apertures in said flange segment and said means engageable between said flange segment and said housing comprise a plurality of bolt members disposed through said bolt receiving apertures and threadably engaged within said bolt receiving bores whereby sealing force is obtained by threaded engagement of said bolts within said bores to exert bearing pressure against said sleeve member.
Claim 5
Dependent Claim
66 words
Apparatus as defined in claim 3 wherein said sleeve member other end extends beyond the surface of said housing and said adapter member includes an indentation formed in the end disposed adjacent said housing, said indentation being dimensioned to receive the extending portion of said sleeve member other end therein whereby said adapter member engages and bears against said sleeve member to provide said sealing force.
Claim 6
Dependent Claim
91 words
Apparatus as defined iN claim 1 wherein a second sleeve member is provided within said first passage on the downstream side of said slide plate, said second sleeve member having one end thereof disposed in sealing relationship with said opening in said slide plate and having its other end extending beyond the surface of said housing, and means disposed exterior said housing adapted to contact said second sleeve member other end and import sealing force thereto to insure sealing bearing of said second sleeve member one end with said slide plate.
Claim 7
Dependent Claim
85 words
Apparatus as defined in claim 5 wherein said second sleeve member includes flow passage means therethrough and said means disposed exterior said housing comprises an adapter member provided with a passage therethrough in register with said flow passage means of said second sleeve member and a radially outwardly extending flange segment thereabout, means engageable between said flange segment and said housing to apply inward sealing force against said sleeve member to insure sealing bearing of said second sleeve member one end with said slide plate.
Claim 8
Dependent Claim
96 words
Apparatus as defined in claim 5 wherein said filter means comprises a filter medium of mesh-like material supported on its downstream side by a breaker plate comprising a plate member provided with a plurality of flow passages therethrough and said passage means in said second sleeve member comprises a cavity formed in said one end of said second sleeve member having a conical shape terminating in an axially disposed flow passage to said second sleeve member other end whereby material flows through said filter medium and breaker plate into said cavity and out said flow passage.
Claim 9
Dependent Claim
92 words
Apparatus as defined in claim 7 wherein the radially innermost ones of said plurality of flow passages provided in said breaker plate are oriented with their axes parallel to the flow path of material through said housing and the radially outermost ones of said plurality of flow passages provided in said breaker plate are oriented with their axes directed inwardly in the direction of material flow to channel the flow of material to more nearly conform to the configuration of said cavity in said second sleeve member thereby to minimize flow resistance.
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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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |