Patent US4039172A successfully refreshed from Google Patents.
US4039172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Outlet trough for a molten product
Assignee: KOA TAIKA KOGYO KK
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Filing: 1976-10-06
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Granted: 1977-08-02
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Expires: 1996-10-06
Abstract
Abstract This invention provides an outlet trough for permitting withdrawal of molten products from a melting furnace, the body of said trough being a mass coaleaced under the influence of physical force, not under thermal influence, with the minimum of reinforcement, thereby making it possible to produce a large-scale outlet trough at reduced cost.
Inventors
- 👤 Tsuyoshi Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:02
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/14; F27D3/145; C; C21; C21B; C21B7/00; C21B7/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
67 words
An outlet trough for a molten product, which comprises a body having a long, narrow depression in the top surface thereof permitting said molten product to run through, said body being supported by angle bars at the bottom corners thereof, said angle bars at opposite bottom corners being connected by flat bars provided at intervals, said body being a mass coalesced under the influence of physical force.
Claim 2
Dependent Claim
67 words
An outlet trough for a molten product, which comprises a body having a long, narrow depression in the top surface thereof permitting said molten product to run through, said body being supported by angle bars at the bottom corners thereof, said angle bars at opposite bottom corners being connected by flat bars provided at intervals, said body being a mass coalesced under the influence of physical force.
Claim 3
Dependent Claim
19 words
An outlet trough as claimed in claim 1, wherein the angle bars are provided with hook plates with apertures.
Claim 4
Dependent Claim
35 words
An outlet trough as claimed in claim 1, wherein the angle bars are provided with stopping means at one end thereof, so as to prevent the body from slipping off when the trough is tilted.
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) | 1980-08-01 | 1981-01-31 | 1981-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-01 | 1985-01-31 | 1985-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-01 | 1989-01-31 | 1989-08-02 | $7700.00 | Window Closed / Lapsed |