Patent US4282639A successfully refreshed from Google Patents.
US4282639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heated controlled deflection roll
Assignee: Sulzer Escher Wyss AG
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Filing: 1979-12-26
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Granted: 1981-08-11
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Expires: 1999-12-26
Abstract
Abstract A controlled deflection roll is disclosed comprising a stationary support and a rotatable hydraulically supported roll shell. There is also provided heating of the hydraulic liquid which is infed to the controlled deflection roll by a pump device. The pressure line of the pump device is connected by means of a heat exchanger with a return flow line. Connected after the heat exchanger is a cooling device having a temperature regulator. In the pressure line there is arranged following the heat exchanger a heating device. The return flow line is connected by means of an overflow valve with a container for hydraulic medium which is fed to a heating device for the controlled deflection roll.
Inventors
- 👤 Alfred Christ
- 👤 Rolf Lehmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:22
CPC Classifications
F; F16; F16C; F16C13/00; F16C13/02; F16C13/022; F16C13/024; F16C13/026; F16C13/028; D; D21; D21G; D21G1/00; D21G1/02; D21G1/0206; D21G1/0213; D21G1/022; F16C32/00; F16C32/06; F16C32/0681; F16C32/0685; F16C32/0688
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
134 words
A heated controlled deflection roll comprising: a stationary support; a rotatable roll shell; means for mounting said rotatable roll shell to be rotatable about said stationary support; at least one pressure element for supporting the roll shell; a pump device; pressure line means for connecting the pump device with the pressure element for the infeed of a hydraulic pressurized fluid medium to the pressure element for supporting the roll shell; return flow line means for the fluid medium connected between the controlled deflection roll and said pump device; heat exchanger means for operatively connecting said return flow line means with said pressure line means and for transmitting heat from the return flow line means to the pressure line means; and cooler means arranged in the return flow line means after the heat exchanger means.
Claim 2
Dependent Claim
134 words
A heated controlled deflection roll comprising: a stationary support; a rotatable roll shell; means for mounting said rotatable roll shell to be rotatable about said stationary support; at least one pressure element for supporting the roll shell; a pump device; pressure line means for connecting the pump device with the pressure element for the infeed of a hydraulic pressurized fluid medium to the pressure element for supporting the roll shell; return flow line means for the fluid medium connected between the controlled deflection roll and said pump device; heat exchanger means for operatively connecting said return flow line means with said pressure line means and for transmitting heat from the return flow line means to the pressure line means; and cooler means arranged in the return flow line means after the heat exchanger means.
Claim 3
Dependent Claim
19 words
The controlled deflection roll as defined in claim 1, further including: temperature regulator means provided for said cooler means.
Claim 4
Dependent Claim
24 words
The controlled deflection roll as defined in claim 2, wherein: said heat exchanger means is structured to operate according to counterflow heat exchange principles.
Claim 5
Dependent Claim
25 words
The controlled deflection roll as defined in claim 2, further including: a heating device arranged after the heat exchanger means in said pressure line means.
Claim 6
Dependent Claim
24 words
The controlled deflection roll as defined in claim 1, wherein: said heat exchanger means is structured to operate according to counterflow heat exchange principles.
Claim 7
Dependent Claim
25 words
The controlled deflection roll as defined in claim 1, further including: a heating device arranged after the heat exchanger means in said pressure line means.
Claim 8
Dependent Claim
47 words
The controlled deflection roll as defined in claim 1, further including: heating means provided in said controlled deflection roll; container means for a hydraulic liquid which is infed to said heating means; and overflow valve means for connecting said return flow line means with said container means.
Claim 9
Dependent Claim
34 words
The controlled deflection roll as defined in claim 1, further including: a plurality of pressure elements provided for said controlled deflection roll and serving for the hydrostatic supporting and mounting of the roll shell.
Claim 10
Dependent Claim
19 words
The controlled deflection roll as defined in claim 8, wherein: said pressure elements each comprise a pistonlike support element.
Claim 11
Dependent Claim
19 words
The controlled deflection roll as defined in claim 8, wherein: said pressure elements each comprise a punchlike support element.
References Cited (Backward Citations)
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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) | 1984-08-10 | 1985-02-09 | 1985-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-10 | 1989-02-09 | 1989-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-10 | 1993-02-09 | 1993-08-11 | $7700.00 | Window Closed / Lapsed |