US3943054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Segmented screen body
Assignee: Durex Products Inc
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Filing: 1974-12-19
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Granted: 1976-03-09
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Expires: 1994-12-19
Abstract
Abstract A segmented screen body or bottom for classification, screening and washing of fragmented hard stocks employs a multiplicity of segmented elements constructed of elastomer or rubber material which, when abutted and supported in predetermined relations, define sieve apertures of a predetermined size and extending, if desired, in staggered longitudinal rows. The structure further requires a multiplicity of parallel transverse metal wires or equivalent elements which are embedded and extend through appropriate apertured portions of the elastic components. In the preferred form the essential elements include T-shaped and L-shaped elements, all of which may be obtained from identical integral moldings of T-shape and many of which are cut along transverse lines at the T-top to provide from the same moldings complementary L-shaped elements.
Inventors
- 👤 Gordon L. Simonson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:02
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/46; B07B1/4609
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
128 words
A segmented, elastic screen body having in combination: a muliplicity of discrete, complemental, elastomer units, having stem-bar portions extending in the direction of flow of the fragmented material to be sifted and having also terminal, integral transverse-bar portions extending perpendicularly to one end of each stem-bar portion, said transverse-bar portions having wire-embedding bores extending longitudinally therethrough, said stem-bar portions having transverse wire-embedding bores through the second end thereof, said units being arranged and disposed in alternately, longitudinally staggered relation with bores of said transverse-bar portions being aligned transversely of said body with the transverse bores of said adjacent stem-bar portions, and a plurality of reinforcing and interconnecting wires extending transversely in spaced relation across said body and each passing through an aligned series of bores of said units.
Claim 2
Dependent Claim
128 words
A segmented, elastic screen body having in combination: a muliplicity of discrete, complemental, elastomer units, having stem-bar portions extending in the direction of flow of the fragmented material to be sifted and having also terminal, integral transverse-bar portions extending perpendicularly to one end of each stem-bar portion, said transverse-bar portions having wire-embedding bores extending longitudinally therethrough, said stem-bar portions having transverse wire-embedding bores through the second end thereof, said units being arranged and disposed in alternately, longitudinally staggered relation with bores of said transverse-bar portions being aligned transversely of said body with the transverse bores of said adjacent stem-bar portions, and a plurality of reinforcing and interconnecting wires extending transversely in spaced relation across said body and each passing through an aligned series of bores of said units.
Claim 3
Dependent Claim
83 words
The structure and combination set forth in claim 1 wherein all of said elastomer units, with the exception of those defining the longitudinal edges of said body are of T-shape to provide said stem-bar portions and said transverse-bar portions, said T-shaped units being arranged and interconnected in alternate, longitudinally staggered relation with the transverse-bars of the T disposed below and interconnected with said bore-provided ends of the stem-bar portions in complementary manner to produce and define longitudinally staggered rows of rectangular screening apertures.
Claim 4
Dependent Claim
33 words
The structure set forth in claim 2 wherein the units defining the longitudinal edges of said sifting body constitute elastomer L-shaped bars with wire-receiving bores formed in the base portion of the L.
Claim 5
Dependent Claim
145 words
A segmented screen body for classifying and screening fragmented hard-stock materials having in combination, a multiplicity of individual, T-shaped, complemental, aperture-defining units constructed, at least mainly, of elastomer material, said units each having a stem-bar portion extending in the direction of flow of the material to be screened and having a transverse T-head portion connected with one end of said stem-bar portion and having a longitudinal support-wire-receiving bore therethrough, said stem portion having a transverse wire-receiving bore through its other end, said units being arranged and positioned in alternately staggered rows, with the bores of said T-head portions being aligned transversely of the screen body with the transverse bores of the adjacent stem-bar portions, and a plurality of supporting, reinforcing and interconnecting wires fixed and extending in spaced relation transversely across said body and each passing through an aligned series of bores of said units.
Claim 6
Dependent Claim
145 words
A segmented screen body for classifying and screening fragmented hard-stock materials having in combination, a multiplicity of individual, T-shaped, complemental, aperture-defining units constructed, at least mainly, of elastomer material, said units each having a stem-bar portion extending in the direction of flow of the material to be screened and having a transverse T-head portion connected with one end of said stem-bar portion and having a longitudinal support-wire-receiving bore therethrough, said stem portion having a transverse wire-receiving bore through its other end, said units being arranged and positioned in alternately staggered rows, with the bores of said T-head portions being aligned transversely of the screen body with the transverse bores of the adjacent stem-bar portions, and a plurality of supporting, reinforcing and interconnecting wires fixed and extending in spaced relation transversely across said body and each passing through an aligned series of bores of said units.
Claim 7
Dependent Claim
38 words
The structure and combination set forth in claim 4 further characterized by: said units being integrally formed from elastomer material and the thickness of said units being at least equal to the average width of said unit portions.
Claim 8
Dependent Claim
46 words
The structure and combination set forth in claim 4 further characterized by: said wires constituting tensioned flexible elements, and the passage of said wires through said aligned bores of said units providing for independent hinge action of all of said units on said transverse spaced wires.
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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) | 1979-03-09 | 1979-09-08 | 1980-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-09 | 1983-09-08 | 1984-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-09 | 1987-09-08 | 1988-03-09 | $7700.00 | Window Closed / Lapsed |