US3716144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screen having parallel slots and method
Assignee: Hendrick Manufacturing Co
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Filing: 1971-03-09
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Granted: 1973-02-13
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Expires: 1991-03-09
Abstract
Abstract A screen having parallel slots therethrough comprises a plurality of rods supported in spaced parallel relation by transversely extending support members. The support members comprise spaced side walls having upper edges upon which the rods rest and bridges extending upwardly and between the rods to connect the side walls as one piece. The rods are anchored to the support members by swaging the rods at points below the elevation of said bridges in a fashion that displaces material in the rods to positions underlying said bridges, thus creating an interference lock between the rods and the bridges.
Inventors
- 👤 A Bartlow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:40
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/42; E04C2/421; E04C2/422; E04C2/423; B; B01; B01D; B01D29/00; B01D29/01; B01D29/03; B01D29/44; B01D29/445
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
100 words
A screen device comprising a plurality of spaced and generally parallel rods, a support member disposed transverse to said rods, said support member comprising spaced apart walls having upper edge portions underlying said rods, said support member including spaced apart bridge members each spanning the space between said walls and each Having opposite end portions joined to upper portions of said walls, each said rod flanked by adjacent bridge members, each rod having protrusions spaced apart primarily along its length and projecting under its flanking bridge members, said protrusions spaced to engage said bridge members adjacent both end portions thereof.
Claim 2
Dependent Claim
100 words
A screen device comprising a plurality of spaced and generally parallel rods, a support member disposed transverse to said rods, said support member comprising spaced apart walls having upper edge portions underlying said rods, said support member including spaced apart bridge members each spanning the space between said walls and each Having opposite end portions joined to upper portions of said walls, each said rod flanked by adjacent bridge members, each rod having protrusions spaced apart primarily along its length and projecting under its flanking bridge members, said protrusions spaced to engage said bridge members adjacent both end portions thereof.
Claim 3
Dependent Claim
100 words
A screen device comprising a plurality of spaced and generally parallel rods, a support member disposed transverse to said rods, said support member comprising spaced apart walls having upper edge portions underlying said rods, said support member including spaced apart bridge members each spanning the space between said walls and each Having opposite end portions joined to upper portions of said walls, each said rod flanked by adjacent bridge members, each rod having protrusions spaced apart primarily along its length and projecting under its flanking bridge members, said protrusions spaced to engage said bridge members adjacent both end portions thereof.
Claim 4
Dependent Claim
100 words
A screen device comprising a plurality of spaced and generally parallel rods, a support member disposed transverse to said rods, said support member comprising spaced apart walls having upper edge portions underlying said rods, said support member including spaced apart bridge members each spanning the space between said walls and each Having opposite end portions joined to upper portions of said walls, each said rod flanked by adjacent bridge members, each rod having protrusions spaced apart primarily along its length and projecting under its flanking bridge members, said protrusions spaced to engage said bridge members adjacent both end portions thereof.
Claim 5
Dependent Claim
28 words
The screen device of claim 1 wherein each said rod comprises a flange interfitting the space between its flanking bridge members, said protrusions being swaged from said flange.
Claim 6
Dependent Claim
23 words
The screen device of claim 1 wherein said rods are circular in cross section except where distorted by swaging to produce said protrusions.
Claim 7
Dependent Claim
30 words
The screen device of claim 1 wherein said rods each have a triangular cross section defined by three longitudinally extending apices, said protrusions spaced apart along one of said apices.
Claim 8
Dependent Claim
20 words
The screen device of claim 1 wherein said bridge members have side edges interfitting said rods except at said protrusions.
Claim 9
Dependent Claim
16 words
The screen device of claim 1 wherein said bridge members arch upwardly between said support members.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |