Patent US3779387A successfully refreshed from Google Patents.
US3779387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter
Assignee: Ocean Protein Corp
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Filing: 1971-10-20
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Granted: 1973-12-18
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Expires: 1991-10-20
Abstract
Abstract A filter having a container made of a substantially inert material which has fittings fastened thereto. Various operating portions of the filter are attached to the fittings in a way such that they can be easily removed and access had to the interior of the filter container for cleaning the container or charging it with a fluid medium.
Inventors
- 👤 J Day
- 👤 P Hirschman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:15
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/30; B01D24/00; B01D24/02; B01D24/10; B01D24/12; B01D24/46; B01D24/4631
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
308 words
A filter for treating fluids comprising a substantially rigid closed container, a charge of a filter medium in said container, first, second and third fittings, each said fitting extending through an opening in said container for providing communication between the interior and the exterior of the container, each said fitting including a flange wall bonded thereto, each said flange wall also being bonded to said container for sealing the opening through which the fitting extends and for firmly attaching said fitting to said container, said container and said first, second, and third fittings being constructed from Fiberglass or plastic material, fluid inlet means connected to said first fitting and having a portion exterior of said container to which a fluid supply means can be connected and a portion interior of said container normally located above the charge of the filter medium for discharging the fluid to be filtered to said filter medium, said second fitting means defining a port thRough which access can be had to the interior of the container, detachable cover means secured to said second fitting means, first conduit means passing through said third fitting means and having a first portion which is located within said container normally within the charge of filter medium and a second portion exterior of said container through which the filtered fluid is discharged, a plurality of openings in said first portion of said first conduit means, and detachable means exterior of said container for coupling between said first conduit means and said third fitting means, said detachable means when coupled to said third fitting sealing off said third fitting while permitting fluid communication with the interior of said container through said first conduit means and said detachable means when removed from said third fitting permitting said first conduit means to be removed from said container through said third fitting.
Claim 2
Dependent Claim
308 words
A filter for treating fluids comprising a substantially rigid closed container, a charge of a filter medium in said container, first, second and third fittings, each said fitting extending through an opening in said container for providing communication between the interior and the exterior of the container, each said fitting including a flange wall bonded thereto, each said flange wall also being bonded to said container for sealing the opening through which the fitting extends and for firmly attaching said fitting to said container, said container and said first, second, and third fittings being constructed from Fiberglass or plastic material, fluid inlet means connected to said first fitting and having a portion exterior of said container to which a fluid supply means can be connected and a portion interior of said container normally located above the charge of the filter medium for discharging the fluid to be filtered to said filter medium, said second fitting means defining a port thRough which access can be had to the interior of the container, detachable cover means secured to said second fitting means, first conduit means passing through said third fitting means and having a first portion which is located within said container normally within the charge of filter medium and a second portion exterior of said container through which the filtered fluid is discharged, a plurality of openings in said first portion of said first conduit means, and detachable means exterior of said container for coupling between said first conduit means and said third fitting means, said detachable means when coupled to said third fitting sealing off said third fitting while permitting fluid communication with the interior of said container through said first conduit means and said detachable means when removed from said third fitting permitting said first conduit means to be removed from said container through said third fitting.
Claim 3
Dependent Claim
12 words
A filter as in claim 1 wherein said container is of Fiberglass.
Claim 4
Dependent Claim
23 words
A filter as in claim 1 wherein said flange wall of each said fitting is molded to the interior wall of said container.
Claim 5
Dependent Claim
48 words
A filter as in claim 1 wherein the portion of said fluid inlet means interior of said container includes a spray head detachably coupled to said first fitting means interior of the container, said spray head being accessible and detachable through the port defined by said second fitting.
Claim 6
Dependent Claim
75 words
A filter as in claim 1 further comprising second conduit means and having an inlet opening located within said container above the charge of filter medium in said container means for detachably connecting said second conduit means to said first conduit means interiorly of said container and providing fluid flow communication between the two, said second conduit means being accessible and detachable from said first conduit means through the port defined by said second fitting.
Claim 7
Dependent Claim
74 words
A filter as in claim 5 further comprising a first said fitting whose flange wall is structurally bonded to said container, said first fitting including means exterior of the container to which a fluid supply means can be coupled and means interior of said container, a spray head detachably coupled to said first fitting means interior of the container, said spray head being accessible and detachable through the port defined by said second fitting.
Claim 8
Dependent Claim
19 words
A filter as in claim 1 wherein said flange wall is structurally bonded to said fitting by an adhesive.
References Cited (Backward Citations)
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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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |