Patent US4190527A successfully refreshed from Google Patents.
US4190527A
Expired / Lapsed
US
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Interlocking screen elements
Assignee: Individual
•
Filing: 1977-11-09
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Granted: 1980-02-26
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Expires: 1997-11-09
Abstract
Abstract A sieve screen module comprises a plurality of screen elements whose opposed edges contain complementary formations interlocked by an elongate member fixedly secured in the formation by a settable material. A number of modules may be assembled by passing a rod thru the elongate member.
Inventors
- 👤 Clifford M. Spiller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:23
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/46; B07B1/4609; B07B1/4645; B07B1/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
102 words
A sieve screen module comprising: (i) a plurality of interlocked sieve elements, each sieve element having a rectangular parallelpiped body formed with through apertures to provide a mesh, opposed edges of said body having castellated formations arranged and dimensioned so as to be interdigitated with the complementary formations of the juxtaposed elements to provide a smooth joint, the underside of said formations being grooved to form together a continuous channel, (ii) an elongate member extending along within said channel and a settable material contained in said channel which adheres to the elongate member and channel walls for locking said sieve elements together.
Claim 2
Dependent Claim
102 words
A sieve screen module comprising: (i) a plurality of interlocked sieve elements, each sieve element having a rectangular parallelpiped body formed with through apertures to provide a mesh, opposed edges of said body having castellated formations arranged and dimensioned so as to be interdigitated with the complementary formations of the juxtaposed elements to provide a smooth joint, the underside of said formations being grooved to form together a continuous channel, (ii) an elongate member extending along within said channel and a settable material contained in said channel which adheres to the elongate member and channel walls for locking said sieve elements together.
Claim 3
Dependent Claim
16 words
A sieve screen module, as claimed in claim 1 wherein said elongate member is a tube.
Claim 4
Dependent Claim
33 words
A sieve screen comprising: (i) a plurality of sieve screen modules as claimed in claim 1, and (ii) coupling members extending through said elongate members connecting adjacent sieve elements to join said modules.
Claim 5
Dependent Claim
16 words
A sieve screen, as claimed in claim 3, wherein each said coupling member comprises a rod.
Claim 6
Dependent Claim
25 words
A sieve screen, as claimed in claim 4, including a stiffening member extending between adjacent sieve screen modules and through which each said rod extends.
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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) | 1983-02-25 | 1983-08-27 | 1984-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-25 | 1987-08-27 | 1988-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-25 | 1991-08-27 | 1992-02-26 | $7700.00 | Window Closed / Lapsed |