US4224849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for detection of metal in a moved strand
Assignee: WEISERT LOSER AND SOHN GmbH AND Co
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Filing: 1979-01-24
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Granted: 1980-09-30
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Expires: 1999-01-24
Abstract
Abstract A device is provided for detection of metal in a moved strand of a highly viscous material such as a mass of chewing gum. A guide trough for the strand is provided, above which an electronic metal detector is disposed, whereby a drop knife is disposed above the guide trough, and a swing valve opens into the floor of the guide trough.
Inventors
- 👤 Karlheinz Loser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:38
CPC Classifications
D; D01; D01B; D01B3/00; D01B3/02; D01B3/025; A; A23; A23G; A23G7/00; B; B26; B26D; B26D5/00; B26D5/20; B26D5/30; B26D5/36; B65; B65H; B65H63/00; D06; D06H; D06H3/00; D06H3/14; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2022; Y10T83/2024; Y10T83/2074; Y10T83/2081; Y10T83/2083; Y10T83/2085; Y10T83/2092; Y10T83/2198; Y10T83/525; Y10T83/541; Y10T83/543
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
98 words
Device for detecting and removing metal from a moving strand of highly viscous material, such as gum or the like, comprising: a guide trough for the strand, an electronic metal detector for detecting metal in the strand as it moves along the guide trough, a drop knife disposed above the guide trough, control means for actuating said drop knife to sever said strand in response to detection of metal in the strand by the metal detector, and swing valve means opening into the floor of said guide trough for accommodating removal of the severed strand with metal therein.
Claim 2
Dependent Claim
98 words
Device for detecting and removing metal from a moving strand of highly viscous material, such as gum or the like, comprising: a guide trough for the strand, an electronic metal detector for detecting metal in the strand as it moves along the guide trough, a drop knife disposed above the guide trough, control means for actuating said drop knife to sever said strand in response to detection of metal in the strand by the metal detector, and swing valve means opening into the floor of said guide trough for accommodating removal of the severed strand with metal therein.
Claim 3
Dependent Claim
15 words
Device according to claim 1, wherein a hold-down device is provided on the drop knife.
Claim 4
Dependent Claim
21 words
Device according to claim 2, wherein at least one compression spring is seated between the hold-down device and the drop knife.
Claim 5
Dependent Claim
30 words
Device according to claim 1, wherein the swing valve is mounted for pivotal movement about a swing shaft located at a distance from the rear edge of the swing valve.
Claim 6
Dependent Claim
27 words
Device according to claim 4, wherein said distance is between 1/3 and 1/4 of the length of the swing valve in the travel direction of the strand.
Claim 7
Dependent Claim
20 words
Device according to claim 1, wherein part of the floor of the guide trough is constituted by a conveyor belt.
Claim 8
Dependent Claim
20 words
Device according to claim 1, wherein a conveyor belt is disposed below the swing valve crosswise to the guide trough.
Claim 9
Dependent Claim
14 words
Device according to claim 1, wherein a cylinder-piston assembly operatively engages the drop knife.
Claim 10
Dependent Claim
14 words
Device according to claim 1, wherein a cylinder-piston assembly operatively engages the swing valve.
References Cited (Backward Citations)
US2309343A
Cited
US3560123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-30 | 1984-03-31 | 1984-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-30 | 1988-03-31 | 1988-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-30 | 1992-03-31 | 1992-09-30 | $7700.00 | Window Closed / Lapsed |