US4095645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear uniform heat wrap control
Assignee: Molins Machine Co Inc
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Filing: 1977-01-12
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Granted: 1978-06-20
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Expires: 1997-01-12
Abstract
Abstract A heat wrap control for a preheater in a paperboard corrugator adjusts the amount of wrap of a moving web about a heated drum as a linear function of web speed to effect uniform heat transfer to the web.
Inventors
- 👤 William A. Massey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:02
CPC Classifications
B; B31; B31F; B31F1/00; B31F1/20; B31F1/24; B31F1/26; B31F1/28; B31F1/2831; B31F1/284
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
78 words
A heat wrap control, comprising: set point means for selectively providing a set point heat signal indicative of the amount of heat to be transferred to a moving web, speed sensing means for providing a reference speed signal indicative of the speed of the web, and control means operatively associated with said set point means and said speed sensing means for controlling wrap of the web about a preheater drum to effect uniform heat transfer to the web.
Claim 2
Dependent Claim
78 words
A heat wrap control, comprising: set point means for selectively providing a set point heat signal indicative of the amount of heat to be transferred to a moving web, speed sensing means for providing a reference speed signal indicative of the speed of the web, and control means operatively associated with said set point means and said speed sensing means for controlling wrap of the web about a preheater drum to effect uniform heat transfer to the web.
Claim 3
Dependent Claim
27 words
The heat wrap control according to claim 1 wherein said control means includes linear means for controlling the web wrap as a linear function of web speed.
Claim 4
Dependent Claim
48 words
The heat wrap control according to claim 2 wherein said linear means includes a read-only memory having information stored therein which is accessible as a function of said set point heat and reference speed signals, and means for adjusting the web wrap as a function of said information.
Claim 5
Dependent Claim
88 words
A heat wrap control, comprising: set point means for selectively providing a digital set point heat signal indicative of the amount of heat to be transferred to a moving web, speed sensing means for providing a digital reference speed signal indicative of the speed of the web, and control means operatively associated with said set point means and said speed sensing means for controlling wrap of the web about a preheater drum as a linear function of the web speed to effect constant heat transfer to the web.
Claim 6
Dependent Claim
88 words
A heat wrap control, comprising: set point means for selectively providing a digital set point heat signal indicative of the amount of heat to be transferred to a moving web, speed sensing means for providing a digital reference speed signal indicative of the speed of the web, and control means operatively associated with said set point means and said speed sensing means for controlling wrap of the web about a preheater drum as a linear function of the web speed to effect constant heat transfer to the web.
Claim 7
Dependent Claim
48 words
The heat wrap control according to claim 4 wherein said control means includes a read-only memory having information stored therein which is accessible as a function of said set point heat and reference speed signals, and means for adjusting the web wrap as a function of said information.
Claim 8
Dependent Claim
97 words
A heat wrap control, comprising: set point means for selectively providing a digital set point signal indicative of the amount of heat to be transferred to a moving web, speed sensing means for providing a digital reference speed signal indicative of the speed of the web, and a read-only memory having information stored therein which is accessible as a function of said set point heat and reference speed signals, and means operatively associated with said read-only memory for adjusting the web wrap as a linear function of web speed to effect uniform heat transfer to the web.
Claim 9
Dependent Claim
97 words
A heat wrap control, comprising: set point means for selectively providing a digital set point signal indicative of the amount of heat to be transferred to a moving web, speed sensing means for providing a digital reference speed signal indicative of the speed of the web, and a read-only memory having information stored therein which is accessible as a function of said set point heat and reference speed signals, and means operatively associated with said read-only memory for adjusting the web wrap as a linear function of web speed to effect uniform heat transfer to the web.
Claim 10
Independent Claim
76 words
A method of controlling the amount of heat transferred to a moving web, comprising: selectively providing a set point heat signal indicative of the amount of heat to be transferred to a moving web, providing a reference speed signal indicative of the speed of the web, and controlling wrap of the web about a heated drum to effect uniform heat transfer to the web as a function of said set point heat and reference speed signals.
Claim 11
Independent Claim
76 words
A method of controlling the amount of heat transferred to a moving web, comprising: selectively providing a set point heat signal indicative of the amount of heat to be transferred to a moving web, providing a reference speed signal indicative of the speed of the web, and controlling wrap of the web about a heated drum to effect uniform heat transfer to the web as a function of said set point heat and reference speed signals.
Claim 12
Dependent Claim
22 words
A method according to claim 7 wherein said controlling step includes controlling the web wrap as a linear function of web speed.
Claim 13
Independent Claim
78 words
A method of controlling the amount of heat transferred from a heated drum to a moving web, comprising: selectively providing a digital set point heat signal indicative of the amount of heat to be transferred to a moving web, providing a digital reference speed signal indicative of the speed of the web, and controlling wrap of the web about the heated drum as a linear function of the web speed to effect uniform heat transfer to the web.
Claim 14
Independent Claim
78 words
A method of controlling the amount of heat transferred from a heated drum to a moving web, comprising: selectively providing a digital set point heat signal indicative of the amount of heat to be transferred to a moving web, providing a digital reference speed signal indicative of the speed of the web, and controlling wrap of the web about the heated drum as a linear function of the web speed to effect uniform heat transfer to the web.
Claim 15
Independent Claim
104 words
A method of controlling the amount of heat transferred from a heated drum to a moving web, comprising: selectively providing a digital set point heat signal indicative of the amount of heat to be transferred to a moving web, providing a digital reference speed signal indicative of the speed of the web, and accessing a read-only memory having information stored therein as a function of said set point heat and reference speed signals, and adjusting the web wrap about the drum as a linear function of web speed to effect uniform heat transfer to the web in response to the accessed read-only memory information.
Claim 16
Independent Claim
104 words
A method of controlling the amount of heat transferred from a heated drum to a moving web, comprising: selectively providing a digital set point heat signal indicative of the amount of heat to be transferred to a moving web, providing a digital reference speed signal indicative of the speed of the web, and accessing a read-only memory having information stored therein as a function of said set point heat and reference speed signals, and adjusting the web wrap about the drum as a linear function of web speed to effect uniform heat transfer to the web in response to the accessed read-only memory information.
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) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |