US6186337B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual screen element having upper scalping screen adhered to crests of corrugated lower screen
Assignee: Varco IP Inc
•
Filing: 1998-10-30
•
Granted: 2001-02-13
•
Expires: 2018-10-30
Abstract
Abstract A new screen has been invented for use with vibratory screening apparatuses which has, in certain aspects, a base, a first screen on the base, and a scalping screen on the first screen, the first screen assembly including a corrugated screen having alternating crests and valleys, and the second screen assembly secured to the crests of the corrugated screen, and cushion members disposed between the first and second screen assemblies, the corrugated screen of the first screen assembly having first end openings beneath valleys on two sides thereof, and end plugs within the first end openings to sealingly close off the end openings to fluid flow. The present invention has other embodiments disclosed herein from. A screening apparatus or shale shaker and methods of their use have been invented that use such screens.
Inventors
- 👤 Thomas C. Adams
- 👤 Loyd R. King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:52
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/46; B07B1/4609; B07B1/4654; B01; B01D; B01D33/00; B01D33/01; B01D33/03; B01D33/0346; B01D33/0376; B01D33/0384; B01D33/35; B01D33/41; B07B1/4663; B07B1/4672; B07B1/469
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
114 words
A screen for a vibratory separator apparatus, the screen comprising; a base, a first screen assembly on the base, and a second screen assembly mounted on and above the first screen assembly, wherein the second screen assembly includes a scalping screen of a larger mesh size than a mesh size of a screen of the first screen assembly, cushion members disposed between the first and second screen assemblies, wherein the first and second screen assemblies each include a corrugated screen having alternating crests and valleys and the cushion members are between the crests of the corrugated screen of the first screen assembly and the valleys of the corrugated screen of the second screen assembly.
Claim 2
Dependent Claim
114 words
A screen for a vibratory separator apparatus, the screen comprising; a base, a first screen assembly on the base, and a second screen assembly mounted on and above the first screen assembly, wherein the second screen assembly includes a scalping screen of a larger mesh size than a mesh size of a screen of the first screen assembly, cushion members disposed between the first and second screen assemblies, wherein the first and second screen assemblies each include a corrugated screen having alternating crests and valleys and the cushion members are between the crests of the corrugated screen of the first screen assembly and the valleys of the corrugated screen of the second screen assembly.
Claim 3
Dependent Claim
25 words
The screen of claim 1 further wherein the second screen assembly is secured to the crests of the corrugated screen of the first screen assembly.
Claim 4
Dependent Claim
20 words
The screen of claim 1 wherein the cushion members are secured to the corrugated screen of the first screen assembly.
Claim 5
Dependent Claim
20 words
The screen of claim 1 wherein the cushion members are secured to the corrugated screen of the second screen assembly.
Claim 6
Dependent Claim
22 words
The screen of claim 1 wherein the cushion members are secured to the corrugated screens of the first and second screen assemblies.
Claim 7
Dependent Claim
22 words
The screen of claim 1 including cushion members between the first and second screen assemblies extending along two spaced apart sides thereof.
Claim 8
Dependent Claim
15 words
The screen of claim 1 wherein the first screen assembly includes a plurality of screens.
Claim 9
Dependent Claim
28 words
The screen of claim 7 wherein the plurality of screens is at least two screens one on top of the other, the at least two screens bonded together.
Claim 10
Dependent Claim
11 words
The screen of claim 1 wherein the base is a frame.
Claim 11
Dependent Claim
13 words
The screen of claim 1 wherein the base is a series of straps.
Claim 12
Dependent Claim
12 words
The screen of claim 1 wherein the base is a perforated plate.
Claim 13
Dependent Claim
15 words
The screen of claim 1 wherein the second screen assembly includes at least two screens.
Claim 14
Dependent Claim
43 words
The screen of claim 1 further comprising the corrugated screen of the first screen assembly having first end openings beneath crests on two sides thereof, and end plugs within the first end openings to sealingly close off the end openings to fluid flow.
Claim 15
Dependent Claim
42 words
The screen of claim 1 wherein end screen openings are defined between and at ends of the two screen assemblies, the screen further comprising opening plugs within the end screen openings to sealingly close off the end screen openings to fluid flow.
Claim 16
Dependent Claim
43 words
The screen of claim 14 further comprising the corrugated screen of the first screen assembly having first end openings beneath crests on two sides thereof, and end plugs within the first end openings to sealingly close off the end openings to fluid flow.
Claim 17
Dependent Claim
143 words
A vibratory shaker system comprising a basket for mounting at least one screen for screening fluid introduced thereon, vibrator apparatus connected to the basket for vibrating the basket and the at least one screen, the at least one screen comprising; a base, a first screen assembly on the base, and a second screen assembly mounted on and above the first screen assembly, wherein the second screen assembly includes a scalping screen of a larger mesh size than a mesh size of a screen of the first screen assembly, cushion members disposed between the first and second screen assemblies, wherein the first and second screen assemblies each include a corrugated screen having alternating crests and valleys and the cushion members are between crests of the corrugated screen of the first screen assembly and the valleys of the corrugated screen of the second screen assembly.
Claim 18
Dependent Claim
143 words
A vibratory shaker system comprising a basket for mounting at least one screen for screening fluid introduced thereon, vibrator apparatus connected to the basket for vibrating the basket and the at least one screen, the at least one screen comprising; a base, a first screen assembly on the base, and a second screen assembly mounted on and above the first screen assembly, wherein the second screen assembly includes a scalping screen of a larger mesh size than a mesh size of a screen of the first screen assembly, cushion members disposed between the first and second screen assemblies, wherein the first and second screen assemblies each include a corrugated screen having alternating crests and valleys and the cushion members are between crests of the corrugated screen of the first screen assembly and the valleys of the corrugated screen of the second screen assembly.
Claim 19
Dependent Claim
112 words
A screen for a vibratory separator apparatus, the screen comprising; a base a first screen assembly on the base, a second screen assembly mounted on and above the first screen assembly, wherein the second screen assembly includes a scalping screen of a larger mesh size than a mesh size of a screen of the first screen assembly, wherein both the first and second screen assemblies have at least one corrugated screen with crests and valleys and end screen openings are defined between and at ends of the two screen assemblies, the screen further comprising opening plugs within the end screen openings to sealingly close off the end screen openings to fluid flow.
Claim 20
Dependent Claim
112 words
A screen for a vibratory separator apparatus, the screen comprising; a base a first screen assembly on the base, a second screen assembly mounted on and above the first screen assembly, wherein the second screen assembly includes a scalping screen of a larger mesh size than a mesh size of a screen of the first screen assembly, wherein both the first and second screen assemblies have at least one corrugated screen with crests and valleys and end screen openings are defined between and at ends of the two screen assemblies, the screen further comprising opening plugs within the end screen openings to sealingly close off the end screen openings to fluid flow.
Claim 21
Dependent Claim
24 words
The screen of claim 17 wherein the second screen assembly is secured to the crests of the corrugated screen of the first screen assembly.
Claim 22
Dependent Claim
17 words
The screen of claim 17 further comprising cushion members disposed between the first and second screen assemblies.
Claim 23
Dependent Claim
26 words
The screen of claim 19 wherein the cushion members are between crests of the corrugated screen of the first screen assembly and the second screen assembly.
Claim 24
Dependent Claim
32 words
The screen of claim 20 wherein the cushion members are between crests of the corrugated screen of the first screen assembly and valleys of the corrugated screen of the second screen assembly.
Claim 25
Dependent Claim
20 words
The screen of claim 21 wherein the cushion members are secured to the corrugated screen of the first screen assembly.
Claim 26
Dependent Claim
20 words
The screen of claim 21 wherein the cushion members are secured to the corrugated screen of the second screen assembly.
Claim 27
Dependent Claim
18 words
The screen of claim 21 wherein the cushion members are secured to corrugated screens of both screen assemblies.
Claim 28
Dependent Claim
22 words
The screen of claim 19 including cushion members between the first and second screen assemblies extending along two spaced apart sides thereof.
Claim 29
Dependent Claim
15 words
The screen of claim 17 wherein the first screen assembly includes a plurality of screens.
Claim 30
Dependent Claim
28 words
The screen of claim 26 wherein the plurality of screens is at least two screens one on top of the other, the at least two screens bonded together.
Claim 31
Dependent Claim
11 words
The screen of claim 17 wherein the base is a frame.
Claim 32
Dependent Claim
13 words
The screen of claim 17 wherein the base is a series of straps.
Claim 33
Dependent Claim
12 words
The screen of claim 17 wherein the base is a perforated plate.
Claim 34
Dependent Claim
15 words
The screen of claim 17 wherein the second screen assembly includes at least two screens.
Claim 35
Dependent Claim
143 words
A vibratory shaker system comprising a basket for mounting at least one screen for screening fluid introduced thereon, vibrator apparatus connected to the basket for vibrating the basket and the at least one screen, the at least one screen comprising a base, a first screen assembly on the base, and a second screen assembly mounted on and above the first screen assembly, wherein the second screen assembly includes a scalping screen of a larger mesh size than a mesh size of a screen of the first screen assembly, wherein both the first and second screen assemblies have at least one corrugated screen with crests and valleys and end screen openings are defined between and at ends of the two screen assemblies, the screen further comprising opening plugs within the end screen openings to sealingly close off the end screen openings to fluid flow.
Claim 36
Dependent Claim
143 words
A vibratory shaker system comprising a basket for mounting at least one screen for screening fluid introduced thereon, vibrator apparatus connected to the basket for vibrating the basket and the at least one screen, the at least one screen comprising a base, a first screen assembly on the base, and a second screen assembly mounted on and above the first screen assembly, wherein the second screen assembly includes a scalping screen of a larger mesh size than a mesh size of a screen of the first screen assembly, wherein both the first and second screen assemblies have at least one corrugated screen with crests and valleys and end screen openings are defined between and at ends of the two screen assemblies, the screen further comprising opening plugs within the end screen openings to sealingly close off the end screen openings to fluid flow.
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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) | 2004-02-13 | 2004-08-14 | 2005-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-02-13 | 2008-08-14 | 2009-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-02-13 | 2012-08-14 | 2013-02-13 | $7700.00 | Window Closed / Lapsed |