US6325216B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screen apparatus for vibratory separator
Assignee: Varco IP Inc
•
Filing: 1999-09-03
•
Granted: 2001-12-04
•
Expires: 2019-09-03
Abstract
Abstract A screen assembly for a vibratory separator, the screen assembly including at least one lower coarse screen member, at least one upper fine screen member above the at least one lower coarse screen member and fused with plastic to the at least one lower coarse screen member, and a strip member beneath and adhered to the at least one lower coarse screen member. In one aspect the strip member includes two side strips, two end pieces, and a plurality of spaced-apart strips parallel to the two side strips each with an end terminating at, in, or on each of the end pieces.
Inventors
- 👤 Kenneth W. Seyffert
- 👤 Thomas C. Adams
- 👤 David Largent
- 👤 David L. Schulte, Jr.
- 👤 Charles N. Grichar
- 👤 Vincent D. Leone
- 👤 Jeffrey Walker
- 👤 Guy L. McClung, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:35
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/46; B07B1/4609; B07B1/4618; B01; B01D; B01D29/00; B01D29/01; B01D29/012; B01D29/05; B01D29/07; B01D29/44; B01D29/445; B01D29/50; B01D29/52; B01D29/62; B01D29/70; B01D29/72; B01D33/00; B01D33/01; B01D33/015; B01D33/0183; B01D33/03; B01D33/0346; B01D33/0376; B01D33/0384; B07B1/4627; B07B1/4645; B07B1/4654; B07B1/4663; B07B1/4672; B07B1/469; B07B1/48; E; E21; E21B; E21B21/00; E21B21/06; E21B21/063; E21B21/065; B01D2201/00; B01D2201/04; B01D2201/0415; B01D2201/18; B01D2201/188; B07B2201/00; B07B2201/04
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
204 words
A screen assembly for a vibratory separator, the screen assembly comprising at least one lower coarse screen member, at least one upper fine screen member above the at least one lower coarse screen member and fused with plastic to the at least one lower coarse screen member, and a strip member beneath and adhered to the at least one lower coarse screen member, the strip member having a first side and a second side, the second side spaced-apart from the first side, the strip member having a third side and a fourth side, the fourth side spaced-apart from the third side, the first and second sides spaced-apart from each other by the third and fourth sides, the first, second, third and fourth sides defining outer boundaries of the screen assembly, the strip member comprising a plurality of spaced-apart support strips, each support strip having two spaced apart ends comprising a first end and a second end, each first end connected to the first side of the strip member and each second end connected to the second side of the strip member, each support strip independent of and not connected to the other support strips between the first and second sides of the strip member.
Claim 2
Dependent Claim
204 words
A screen assembly for a vibratory separator, the screen assembly comprising at least one lower coarse screen member, at least one upper fine screen member above the at least one lower coarse screen member and fused with plastic to the at least one lower coarse screen member, and a strip member beneath and adhered to the at least one lower coarse screen member, the strip member having a first side and a second side, the second side spaced-apart from the first side, the strip member having a third side and a fourth side, the fourth side spaced-apart from the third side, the first and second sides spaced-apart from each other by the third and fourth sides, the first, second, third and fourth sides defining outer boundaries of the screen assembly, the strip member comprising a plurality of spaced-apart support strips, each support strip having two spaced apart ends comprising a first end and a second end, each first end connected to the first side of the strip member and each second end connected to the second side of the strip member, each support strip independent of and not connected to the other support strips between the first and second sides of the strip member.
Claim 3
Dependent Claim
25 words
The screen assembly of claim 1 wherein the at least one lower coarse screen member is two coarse screens, one on top of the other.
Claim 4
Dependent Claim
26 words
The screen assembly of claim 1 wherein the support strips are made of a material from the group consisting of metal, plastic, fiberglass, rubber or cermet.
Claim 5
Dependent Claim
53 words
The screen assembly of claim 1 wherein the strip member includes two spaced apart end pieces each at an angle to the plurality of spaced apart support strips, each of the plurality of spaced apart support strips having two spaced-apart ends terminating at, on, or in one of the two spaced-apart end pieces.
Claim 6
Dependent Claim
24 words
The screen assembly of claim 1 wherein the at least one upper fine screen is two fine screens, one on top of the other.
Claim 7
Dependent Claim
51 words
The screen assembly of claim 1 further comprising a fused plastic grid fusing the at least one lower coarse screen member and the at least one upper fine screen member together, the fused plastic grid comprising a plurality of intersecting lines of plastic which intersect at a plurality of intersection areas.
Claim 8
Dependent Claim
30 words
The screen assembly of claim 6 wherein a plurality of the intersection areas lie above one of the plurality of spaced-apart support strips which are included in the strip member.
Claim 9
Dependent Claim
32 words
The screen assembly of claim 7 wherein each intersection area on a particular support strip is connected to adjacent intersection areas above the particular support strip by an additional line of plastic.
Claim 10
Dependent Claim
29 words
The screen assembly of claim 6 wherein each of the intersection areas lies above one of a plurality of spaced-apart support strips which are included in the strip member.
Claim 11
Dependent Claim
25 words
The screen assembly of claim 1 further comprising at least one secondary coarse screen portion disposed above the at least one upper fine screen member.
Claim 12
Dependent Claim
21 words
The screen assembly of claim 10 wherein the at least one secondary coarse screen portion is two spaced-apart coarse screen portions.
Claim 13
Dependent Claim
32 words
The screen assembly of claim 10 wherein the at least one secondary coarse screen portion is located at an area at which fluid to be treated is introduced onto the screen assembly.
Claim 14
Dependent Claim
31 words
The screen assembly of claim 10 wherein the at least one secondary coarse screen portion is located at an area at which fluid to be treated exits from the screen assembly.
Claim 15
Dependent Claim
63 words
The screen assembly of claim 10 wherein the at least one secondary coarse screen portion is at least a first and a second portion, the first portion located at an area at which fluid to be treated is introduced onto the screen assembly and the second portion is located at an area at which fluid to be treated exits from the screen assembly.
Claim 16
Dependent Claim
44 words
The screen assembly of claim 10 wherein the at least one secondary coarse screen portion is defined by opposed spaced-apart edges, at least one of which overlies a support strip of a plurality of spaced-apart support strips that are included in the strip member.
Claim 17
Dependent Claim
29 words
The screen assembly of claim 1 wherein the at least one lower coarse screen member is at least partially sintered to the at least one upper fine screen member.
Claim 18
Dependent Claim
31 words
The screen assembly of claim 1 wherein the at least one lower coarse screen member is sintered over substantially its entire area to the at least one upper fine screen member.
Claim 19
Dependent Claim
19 words
The screen assembly of claim 1 further comprising two spaced-apart hook strips on opposite sides of the screen assembly.
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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) | 2004-12-03 | 2005-06-04 | 2005-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-12-03 | 2009-06-04 | 2009-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-12-03 | 2013-06-04 | 2013-12-04 | $7700.00 | Window Closed / Lapsed |