US3593027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Web fault-detecting apparatus using roller constructed to prevent bouncing
Assignee: DR ING RUDOLF HELL KG KIEL
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Filing: 1969-06-24
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Granted: 1971-07-13
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Expires: 1989-06-24
Abstract
Abstract A fault sensing roller for use on a travelling web consisting of an outer shell and an inner core. The inner core is composed of a material having a greater mass than the outer shell and is spaced from the inner periphery of the outer shell by a yieldable elastomeric member thereby preventing ''''bouncing'''' of the roller after passage of a fault and maintaining true contact between the outer shell and the travelling web.
Inventors
- 👤 Dieter Grieger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:58
CPC Classifications
G; G01; G01N; G01N19/00; G01N19/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
116 words
In a web fault-detecting apparatus, a fault sensing roller mounted for rotation in contact with a travelling web comprising, a generally cylindrical hollow outer shell having an inner and outer peripheral surface, a generally cylindrical solid core having an outer peripheral surface loosely fitting within said hollow outer shell and out of contact with said inner peripheral surface of said outer shell, said solid core having a mass greater than the mass of the outer shell and an elastically yieldable spacing means in contact with the inner peripheral surface of the outer shell and with the outer peripheral surface of the core maintaining the relative position of the inner core in respect to the outer shell.
Claim 2
Dependent Claim
116 words
In a web fault-detecting apparatus, a fault sensing roller mounted for rotation in contact with a travelling web comprising, a generally cylindrical hollow outer shell having an inner and outer peripheral surface, a generally cylindrical solid core having an outer peripheral surface loosely fitting within said hollow outer shell and out of contact with said inner peripheral surface of said outer shell, said solid core having a mass greater than the mass of the outer shell and an elastically yieldable spacing means in contact with the inner peripheral surface of the outer shell and with the outer peripheral surface of the core maintaining the relative position of the inner core in respect to the outer shell.
Claim 3
Dependent Claim
40 words
In a web fault-detecting apparatus as defined in claim 1, wherein the elastically yieldable spacing means comprise at least a pair of toroidal rings composed of elastically yieldable material spaced from one another along the length of the sensing roller.
Claim 4
Dependent Claim
39 words
In a web fault-detecting apparatus as defined in claim 2, wherein the outer peripheral surface of the core is provided with at least a pair of grooves spaced from one another along the length thereof receiving the toroidal rings.
Claim 5
Dependent Claim
42 words
In a web fault-detecting apparatus as defined in claim 2, wherein the inner peripheral surface of the outer shell is provided with at least a pair of grooves spaced from one another along the length of said shell receiving the toroidal rings.
Claim 6
Dependent Claim
57 words
In a web fault-detecting apparatus as defined in claim 2, wherein the inner peripheral surface of the outer peripheral surface of the core are provided with at least a pair of opposed grooves spaced from one another along the length of said surfaces, said opposed grooves being In registry with each other receiving the toroidal rings therebetween.
Claim 7
Dependent Claim
123 words
In a web fault-detecting apparatus the combination comprising, a backing roller mounted for rotation, a travelling web supported by said backing roller and travelling thereover, a fault sensing roller mounted for rotation above said backing roller in contact with said travelling web and a signal generating and receiving means mounted in the vicinity of said fault sensing roller detecting interruptions in contact between said sensing roller and said travelling web, said fault sensing roller comprising an outer shell and an inner core loosely fitting within said shell, said inner core having a mass greater than the mass of the outer shell, with an elastically yieldable spacing means mounted between said shell and said core maintaining the relative position in respect to one another.
Claim 8
Dependent Claim
123 words
In a web fault-detecting apparatus the combination comprising, a backing roller mounted for rotation, a travelling web supported by said backing roller and travelling thereover, a fault sensing roller mounted for rotation above said backing roller in contact with said travelling web and a signal generating and receiving means mounted in the vicinity of said fault sensing roller detecting interruptions in contact between said sensing roller and said travelling web, said fault sensing roller comprising an outer shell and an inner core loosely fitting within said shell, said inner core having a mass greater than the mass of the outer shell, with an elastically yieldable spacing means mounted between said shell and said core maintaining the relative position in respect to one another.
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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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |