Patent US3692181A successfully refreshed from Google Patents.
US3692181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel clamping device for sectors of a rotary disc filter
Assignee: Envirotech Corp
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Filing: 1971-03-04
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Granted: 1972-09-19
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Expires: 1991-03-04
Abstract
Abstract An improved clamping device for securing a filter sector to the central barrel of a rotary disc filter has been invented. The clamping device features a pair of opposed locking arms each interconnecting at one end to a pair of radial rods extending from said filter barrel. The other ends of the locking arms interconnect with a channel-shaped sector clamp. The upper surface of the channel-shaped sector clamp has a pair of fulcrum blocks for contact with each of the locking arms which when forcibly deflected over the fulcrum block causes an inward radial force which forces the channel-shaped clamp against the sector and further forces the sector in toward the central barrel, thereby holding the filter section firmly in position.
Inventors
- 👤 Steven S Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:17
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/15; B01D33/21; B01D33/23
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
146 words
A clamping device for securing a filter sector to a central barrel of a rotary disc filter having fixed radial rods extending from said central barrel comprising: a. an elongated locking arm adapted to interconnect at least one radial rod and to overlie a sector holding means, b. a sector holding means adapted to be positioned along the peripheral edge of said filter sector and beneath said elongated locking arm, c. fulcrum means on said sector holding means for contacting said locking arm and for transferring a radial force to said sector holding means, d. locking means for securing said locking arm and exerting a stress thereon to cause a substantial inward radial force to be exerted on said fulcrum means and an outward radial force to be exerted on said radial rod when said locking arm interconnects said radial rod and said sector holding means.
Claim 2
Dependent Claim
146 words
A clamping device for securing a filter sector to a central barrel of a rotary disc filter having fixed radial rods extending from said central barrel comprising: a. an elongated locking arm adapted to interconnect at least one radial rod and to overlie a sector holding means, b. a sector holding means adapted to be positioned along the peripheral edge of said filter sector and beneath said elongated locking arm, c. fulcrum means on said sector holding means for contacting said locking arm and for transferring a radial force to said sector holding means, d. locking means for securing said locking arm and exerting a stress thereon to cause a substantial inward radial force to be exerted on said fulcrum means and an outward radial force to be exerted on said radial rod when said locking arm interconnects said radial rod and said sector holding means.
Claim 3
Dependent Claim
21 words
The clamping device of claim 1 which includes a guide means for aligning said sector holding means with said locking arm.
Claim 4
Dependent Claim
18 words
The clamping device of claim 1 wherein said elongated locking arm is pivotally secured to a radial rod.
Claim 5
Dependent Claim
25 words
The clamping device of claim 1 wherein said fulcrum means is a raised platform attached to said sector holding means and includes a guide means.
Claim 6
Dependent Claim
27 words
The clamping device of claim 1 wherein the sector holding means is an elongated channel shaped member contoured to encircle the peripheral edge of said filter sector.
Claim 7
Dependent Claim
25 words
The clamping device of claim 5 wherein said locking means comprises a hook-like structure standing on the top surface of a channel shaped sector clamp.
Claim 8
Dependent Claim
23 words
The clamping device of claim 1 wherein said locking means secures the free ends of said locking arms to said sector holding means.
Claim 9
Dependent Claim
22 words
The clamping device of claim 1 wherein said locking means secures a free end of said locking arm to a radial rod.
Claim 10
Dependent Claim
22 words
The clamping device of claim 8 wherein said elongated locking arm is pivotally secured to an elongated channel shaped sector holding means.
Claim 11
Dependent Claim
16 words
The clamping device of claim 1 wherein said fulcrum means is adjustable to vary radial force.
Claim 12
Dependent Claim
51 words
The clamping device of claim 10 wherein said adjustable fulcrum means comprises a bearing pad pivotally attached at one end to a channel shaped sector clamp, wedge-shaped adjustment means placed between said bearing pad and the top surface of said sector clamp and screw means for positioning said wedge-shaped adjustment means.
Claim 13
Dependent Claim
30 words
The clamping device of claim 1 wherein at least one elongated locking arm is pivotally attached to said sector holding means which overrides the peripheral surface of a filter sector.
Claim 14
Dependent Claim
17 words
The clamping device of claim 12 wherein said locking means is a part of said radial rod.
Claim 15
Dependent Claim
22 words
The clamping device of claim 1 wherein a pair of elongated locking arms are pivotally attached to a single sector holding means.
Claim 16
Dependent Claim
40 words
The clamping device of claim 1 wherein a single elongated locking arm interconnects a pair of adjacent radial rods to secure in place a single filter sector and positioned between said radial rods by contacting a single sector holding means.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |