Patent US3994380A successfully refreshed from Google Patents.
US3994380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transport roller
Assignee: BARCLAYS BUSINESS CREDIT Inc
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Filing: 1976-01-05
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Granted: 1976-11-30
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Expires: 1996-01-05
Abstract
Abstract A transport roller is disclosed for advancing elongated strips of flat sheet material such as photographic film, paper and the like in tanks for chemical treatment, in driers and for other purposes which comprises a hollow tubular roller body having shafts extending from its ends, with an improved leakproof and quickly assembled shaft mounting being provided in expanded frictional engagement with the tube.
Inventors
- 👤 Henry F. Hope
- 👤 Stephen F. Hope
- 👤 John A. Hope
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:51
CPC Classifications
B; B65; B65G; B65G39/00; B65G39/02; B65G39/09; G; G03; G03D; G03D3/00; G03D3/08; G03D3/13
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
131 words
A transport roller comprising an elongated hollow tubular body portion, an insert in said tubular portion having an outwardly extending rim in overlapped relation to the end of the tubular portion and in gripping engagement with the interior of the tubular portion, a plug member extending inwardly within the insert and having a rim in overlapped relation to the rim of the insert and closing the end of said tubular portion, a clamping plate in said tubular portion in engagement with an inner portion of said insert, a clamping member in engagement with said clamping plate and with said plug member and retaining said insert in gripping engagement with said plug and said tubular portion, and a shaft secured in said plug member in longitudinal axial relation to said tubular portion.
Claim 2
Dependent Claim
131 words
A transport roller comprising an elongated hollow tubular body portion, an insert in said tubular portion having an outwardly extending rim in overlapped relation to the end of the tubular portion and in gripping engagement with the interior of the tubular portion, a plug member extending inwardly within the insert and having a rim in overlapped relation to the rim of the insert and closing the end of said tubular portion, a clamping plate in said tubular portion in engagement with an inner portion of said insert, a clamping member in engagement with said clamping plate and with said plug member and retaining said insert in gripping engagement with said plug and said tubular portion, and a shaft secured in said plug member in longitudinal axial relation to said tubular portion.
Claim 3
Dependent Claim
24 words
A transport roller as defined in claim 1 in which said insert has between its rim and its opposite end a hollow cylindrical portion.
Claim 4
Dependent Claim
27 words
A transport roller as defined in claim 2 in which said insert has a transverse inner end wall portion with which said clamping plate is in engagement.
Claim 5
Dependent Claim
19 words
A transport roller as defined in claim 1 in which said insert is of elastic deformable liquid proof material.
Claim 6
Dependent Claim
19 words
A transport roller as defined in claim 1 in which said plug is of relatively rigid liquid proof material.
Claim 7
Dependent Claim
44 words
A transport roller as defined in claim 1 in which said insert has an inner end portion with a cylindrical exterior surface and a conical interior surface, and said plug has a complemental surface for engagement with the conical interior surface of the insert.
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) | 1979-11-30 | 1980-05-31 | 1980-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-30 | 1984-05-31 | 1984-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-30 | 1988-05-31 | 1988-11-30 | $7700.00 | Window Closed / Lapsed |