US3708844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Replaceable roll assembly
Assignee: Individual
•
Filing: 1971-03-12
•
Granted: 1973-01-09
•
Expires: 1991-03-12
Abstract
Abstract A roll assembly for heavy conveyor use, such as in the feed assembly for a wood planer. The cylindrical shell or roll is replaceable on a mounting shaft assembly and can be reversed between adjacent roll assemblies to increase its useful life. The shell is rigidly supported by complementary hubs permanently mounted to a central shaft so as to be capable of withstanding heavy loading forces in use.
Inventors
- 👤 H Rawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:30
CPC Classifications
B; B65; B65G; B65G39/00; B65G39/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
210 words
A replaceable roll and shaft assembly comprising: a shaft having a central longitudinal axis; a first annular shoulder projecting outwardly from the shaft adjacent one shaft end and presenting a continuous cylindrical surface; a second annular shoulder projecting outwardly from the shaft adjacent the remaining shaft end and presenting a discontinuous segmented cylindrical surface; a covering cylindrical shell fitted over said shoulders, having a discontinuous segmented inwardly projecting shoulder at one end complimentary to the second annular shoulder and a continuous inwardly projecting shoulder at the remaining end thereof having an inner radius less than that of the cylindrical surface of said second annular shoulder; means for selectively securing the shoulder at said one end of said shell to said first annular shoulder and for selectively securing the shoulder at said remaining end of said shell to said second annular shoulder; and third and fourth annular shoulders located on said shaft adjacent to the first and second annular shoulders respectively and at corresponding sides thereof; the radius of said third annular shoulder being substantially equal to that of the shoulder at the remaining end of said shell and the radius of said fourth annular shoulder being substantially equal to that of the shoulder at said one end of said shell.
Claim 2
Dependent Claim
210 words
A replaceable roll and shaft assembly comprising: a shaft having a central longitudinal axis; a first annular shoulder projecting outwardly from the shaft adjacent one shaft end and presenting a continuous cylindrical surface; a second annular shoulder projecting outwardly from the shaft adjacent the remaining shaft end and presenting a discontinuous segmented cylindrical surface; a covering cylindrical shell fitted over said shoulders, having a discontinuous segmented inwardly projecting shoulder at one end complimentary to the second annular shoulder and a continuous inwardly projecting shoulder at the remaining end thereof having an inner radius less than that of the cylindrical surface of said second annular shoulder; means for selectively securing the shoulder at said one end of said shell to said first annular shoulder and for selectively securing the shoulder at said remaining end of said shell to said second annular shoulder; and third and fourth annular shoulders located on said shaft adjacent to the first and second annular shoulders respectively and at corresponding sides thereof; the radius of said third annular shoulder being substantially equal to that of the shoulder at the remaining end of said shell and the radius of said fourth annular shoulder being substantially equal to that of the shoulder at said one end of said shell.
Claim 3
Dependent Claim
213 words
A replaceable roll and shaft assembly comprising: a shaft having a central longitudinal axis; a first annular shoulder projecting outwardly from the shaft adjacent one shaft end and presenting a continuous cylindrical surface; a second annular shoulder projecting outwardly from the shaft adjacent the remaining shaft end and presenting a discontinuous segmented cylindrical surface; a covering cylindrical shell fitted over said shoulders, having a discontinuous segmented inwardly projecting shoulder at one end complimentary to the second annular shoulder and a continuous inwardly projecting shoulder at the remaining end thereof having an inner radius less than that of the cylindrical surface of said second annular shoulder; means for selectively securing the shoulder at said one end of said shell to said first annular shoulder and for selectively securing the shoulder at said remaining end of said shell to said second annular shoulder; additional inner cylindrical surfaces adjacent each end of said shell at corresponding sides of the shell shoulders, the additional inner cylindrical surface at said one end of said shell having a radius substantially equal to that of said first annular shoulder on said shaft and the additional inner cylindrical surface at said remaining end of said shell having a radius substantially equal to that of said second annular shoulder on said shaft.
Claim 4
Dependent Claim
213 words
A replaceable roll and shaft assembly comprising: a shaft having a central longitudinal axis; a first annular shoulder projecting outwardly from the shaft adjacent one shaft end and presenting a continuous cylindrical surface; a second annular shoulder projecting outwardly from the shaft adjacent the remaining shaft end and presenting a discontinuous segmented cylindrical surface; a covering cylindrical shell fitted over said shoulders, having a discontinuous segmented inwardly projecting shoulder at one end complimentary to the second annular shoulder and a continuous inwardly projecting shoulder at the remaining end thereof having an inner radius less than that of the cylindrical surface of said second annular shoulder; means for selectively securing the shoulder at said one end of said shell to said first annular shoulder and for selectively securing the shoulder at said remaining end of said shell to said second annular shoulder; additional inner cylindrical surfaces adjacent each end of said shell at corresponding sides of the shell shoulders, the additional inner cylindrical surface at said one end of said shell having a radius substantially equal to that of said first annular shoulder on said shaft and the additional inner cylindrical surface at said remaining end of said shell having a radius substantially equal to that of said second annular shoulder on said shaft.
References Cited (Backward Citations)
DE1059348B
Cited
US2935880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |