US3855131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gyratory filter
Assignee: Individual
•
Filing: 1973-06-05
•
Granted: 1974-12-17
•
Expires: 1993-06-05
Abstract
Abstract Filtering apparatus including a container having an inlet and an outlet and a filter interposed between the inlet and the outlet. The filter has a bottom plate fixed to the outlet and a top plate connected to a motor for gyrating the top plate. The two plates are connected by a helical spring and a filtering screen surrounding the spring.
Inventors
- 👤 H Thumberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:28
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/01; B01D33/03; B01D33/0307; B01D33/0315; B01D33/06; B01D33/073; B01D33/29; B01D33/80; B01D33/801; B01D2201/00; B01D2201/04; B01D2201/0461
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
90 words
Filtering apparatus comprising a closed container having an inlet and an outlet a filter mounted in said container between said inlet and outlet and comprising a bottom plate fixed to said outlet and having a hole communicating with said outlet a top plate a helical spring mounted between said top and bottom plates, a screen surrounding said spring and secured to said top and bottom plates, and means for moving said top plate through a substantially horizontal orbital path of movement as fluid passes from said inlet to said outlet.
Claim 2
Dependent Claim
90 words
Filtering apparatus comprising a closed container having an inlet and an outlet a filter mounted in said container between said inlet and outlet and comprising a bottom plate fixed to said outlet and having a hole communicating with said outlet a top plate a helical spring mounted between said top and bottom plates, a screen surrounding said spring and secured to said top and bottom plates, and means for moving said top plate through a substantially horizontal orbital path of movement as fluid passes from said inlet to said outlet.
Claim 3
Dependent Claim
24 words
Filtering apparatus as in claim 1, further comprising, means associated with said top plate moving means for varying the movement of said top plate.
Claim 4
Dependent Claim
49 words
Filtering apparatus as in claim 1 in which said top plate moving means comprises a circular wheel projecting upwardly from said top plate, a motor having a downwardly depending shaft co-axial with said wheel, a Boss eccentrically mounted with respect to said motor shaft and engageable with said wheel.
Claim 5
Dependent Claim
22 words
Filtering apparatus as in claim 3 further comprising means for adjusting the radial displacement from the motor shaft axis of said boss.
Claim 6
Dependent Claim
40 words
Filtering apparatus as in claim 1 further comprising said container having a top wall having a large opening therein, said top plate moving means passing through said opening, and an elastomeric seal between said top wall and said gyrating means.
Claim 7
Dependent Claim
58 words
Apparatus as in claim 1 further comprising a vertical support for said container, said container having a removable top wall, an arm pivoted to said vertical support and overlying said top wall, a motor mounted on said arm and having drive means passing through said top wall to said top plate to form said top plate moving means.
Claim 8
Dependent Claim
42 words
Apparatus as in claim 6, said drive means including a stub shaft projecting above said top plate, a cup drivably associated with said motor and freely receiving said stub shaft, and means sealing said cup in an opening in said top wall.
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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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |