US3610404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curved powered roller conveyor
Assignee: Ermanco Inc
•
Filing: 1969-05-05
•
Granted: 1971-10-05
•
Expires: 1989-05-05
Abstract
Abstract A curved live roller conveyor is described in which a plurality of individual live rollers disposed at angles about the center of conveyor curvature are driven from a common powered drive shaft through a system of pulleys and elastomeric belts. Straight or tapered rollers are used, with pulley diameters being varied to provide constant rotational speed for each driven roller.
Inventors
- 👤 Fred J Fleischauer
- 👤 Theodore A Hammond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:52
CPC Classifications
B; B65; B65G; B65G13/00; B65G13/02; B65G13/06; B65G13/07; B65G13/08; B65G47/00; B65G47/22; B65G47/26; B65G47/261; B65G47/263; B65G2201/00; B65G2201/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
82 words
In a live roller conveyor, a plurality of angled rollers disposed in a common plane to define a curved pass line, a powered straight drive shaft, a friction clutch drive means interconnecting said straight drive shaft with certain of said rollers, said friction clutch drive means including a driven pulley carried by each of said certain rollers and a corresponding drive pulley carried by the drive shaft adjacent each said driven pulley and a drivebelt looped between each of said adjacent pulleys.
Claim 2
Dependent Claim
82 words
In a live roller conveyor, a plurality of angled rollers disposed in a common plane to define a curved pass line, a powered straight drive shaft, a friction clutch drive means interconnecting said straight drive shaft with certain of said rollers, said friction clutch drive means including a driven pulley carried by each of said certain rollers and a corresponding drive pulley carried by the drive shaft adjacent each said driven pulley and a drivebelt looped between each of said adjacent pulleys.
Claim 3
Dependent Claim
37 words
Apparatus as defined in claim 1 in which said driven pulley has a smaller diameter than the adjoining roller portions, and one of each said adjacent drive and driven pulleys is rotatably carried for slippable friction drive.
Claim 4
Dependent Claim
84 words
Apparatus as defined in claim 1 in which the rollers are tapered toward the center of pass line curvature with the driven pulleys being formed in the surface of the live rollers, and with the straight drive shaft intersecting the live rollers at points of varying roller diameter and driven pulley diameter, and in which the diameter of the drive pulleys varies in inverse proportion to the diameter of the driven pulleys, whereby the rotational speed of each live roller is substantially the same.
Claim 5
Dependent Claim
39 words
Apparatus as defined in claim 1 in which each of said driven pulleys is rotatably carried and axially shiftable on said drive shaft for slippable frictional drive, whereby each drive pulley may seek its position of optimum driving efficiency.
References Cited (Backward Citations)
US2487196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |