Patent US3726386A successfully refreshed from Google Patents.
US3726386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doubled loop inverting and conveying apparatus
Assignee: Dow Chemical Co
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Filing: 1971-04-09
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Granted: 1973-04-10
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Expires: 1991-04-09
Abstract
Abstract Conveying apparatus, including a double looped belt with a twisted side trained about supporting pulleys, wherein an article may be introduced between the loops and be inverted while conveyed to the other end of said loop.
Inventors
- 👤 D Chisholm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:47
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/22; B65G47/24; B65G47/248
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
100 words
A conveying apparatus comprising an endless belt, the endless belt having a first surface and a gripping surface, a first belt support and a second belt support, the belt forming a double loop about the first and second belt supports, the double loop having a twisted side and a planar side extending between the belt supports, the twisted side of the double loop of the belt being twisted at least 180* between the two belt supports and the gripping face of the belt being in face to face engagement where the belt forms the double loop on the twisted side.
Claim 2
Dependent Claim
100 words
A conveying apparatus comprising an endless belt, the endless belt having a first surface and a gripping surface, a first belt support and a second belt support, the belt forming a double loop about the first and second belt supports, the double loop having a twisted side and a planar side extending between the belt supports, the twisted side of the double loop of the belt being twisted at least 180* between the two belt supports and the gripping face of the belt being in face to face engagement where the belt forms the double loop on the twisted side.
Claim 3
Dependent Claim
19 words
The conveyor of claim 1 including a separator disposed between portions of the belt on the flat side thereof.
Claim 4
Dependent Claim
36 words
The apparatus of claim 1 including means to cause the endless loop to progress about the first and second belt supports wherein the twisted side progresses from the first belt support to the second belt support.
Claim 5
Dependent Claim
24 words
The apparatus of claim 3 including means to continually supply a material between the gripping face of the belt adjacent the first belt support.
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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |