US3812732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scalloped belt engaging tangent for ribbing on centering and idler tracking rollers
Assignee: Individual
•
Filing: 1972-06-28
•
Granted: 1974-05-28
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Expires: 1992-06-28
Abstract
Abstract A serrated or scalloped tangent surface on ribbing for tracking rollers disposed to engage and grip ribbon strips of material such as belting with a positive traction therebetween. A series of equally spaced V grooves formed across the belt engaging tangent of ribbing and transverse to the lineal axis of the ribbing to provide intermediate lands. The provision of tooth like barbs on at least one edge of the V-shaped grooves of such scalloping and the variation in grip dependent upon belt characteristics by greater or lesser recessing of such ribbing into the peripheral surface of the roller.
Inventors
- 👤 R Conrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:16
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/32; F16H55/36
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
40 words
In a belt aligning and tracking roller having a peripheral surface provided with belt aligning ribbing thereon; the combination therewith of a scalloped belt engaging surface on such ribbing comprising evenly spaced grooves formed transversely across said belt engaging surface.
Claim 2
Dependent Claim
40 words
In a belt aligning and tracking roller having a peripheral surface provided with belt aligning ribbing thereon; the combination therewith of a scalloped belt engaging surface on such ribbing comprising evenly spaced grooves formed transversely across said belt engaging surface.
Claim 3
Dependent Claim
21 words
The scalloped belt engaging surface on such ribbing in accordance with that of claim 1 in which said grooves are V-shaped.
Claim 4
Dependent Claim
37 words
The scalloped belt engaging surface on such ribbing in accordance with that of claim 2 in which said V-shaped grooves are spaced by tooth like lands of lesser dimension than the open facet of the V-shaped grooves.
Claim 5
Dependent Claim
39 words
The scalloped belt engaging surface on such ribbing in accordance with that of claim 3 in which each of said tooth like lands has an apex formed thereoN adjacent at least one margin of each of said V-shaped grooves.
Claim 6
Dependent Claim
27 words
The scalloped belt aligning ribbing in accordance with that of claim 1 in which said ribbing is of round stock having a scalloped belt engaging tangent surface.
Claim 7
Dependent Claim
43 words
The round stock ribbing in accordance with that of claim 5 in which said scalloped belt engaging tangent surface includes a plurality of equally spaced V-shaped grooves formed transversely of the lineal dimension of each round stock ribbing at said tangent surface thereof.
Claim 8
Dependent Claim
38 words
The round stock ribbing in accordance with that of claim 6 in which each of said V-shaped grooves have their valley apexes disposed chordally of said round stock ribbing at a depth less than the radial dimension thereof.
Claim 9
Dependent Claim
31 words
The round stock ribbing in accordance with that of claim 7 in which each of said grooves has a crescent shaped apex formed along one margin thereof facing an adjacent groove.
Claim 10
Dependent Claim
58 words
The belt aligning and tracking rollers in accordance with claim 1 having round stock ribbing wound thereon provided with equally spaced V-shaped scallopes formed transversely of their belt engaging tangent surface and exposed beyond the peripheral surface of such roller radially a distance within the depth of each of said V-shaped grooves in said belt engaging tangent surface.
Claim 11
Dependent Claim
43 words
In belt aligning and tracking rollers in accordance with claim 9 including spirally tending round stock ribbing having tooth like lands along said belt engaging tangent surface provided with a crescent like apex along one margin of each of said V-shaped grooves therein.
Claim 12
Dependent Claim
50 words
In a belt aligning and tracking roller as recited in claim 1 wherein said roller includes a generally cylindrical member having spiral grooves provided in the outer surface thereof, and wherein said ribbing includes one or more lengths of wire wound about said member and disposed within said spiral grooves.
Claim 13
Dependent Claim
88 words
In a belt aligning and tracking roller as recited in claim 11 wherein said spiral grooves have a greater depth of groove near the ends of said member than at the center of said member, and said lengths of wire are of a single gauge larger than the maximum depth of groove so that when disposed within said spiral grooves, the lengths of wire project above the surface of said member to form a belt engaging roller surface which is effectively tapered along the length of the roller.
References Cited (Backward Citations)
US2622448A
Cited
US3713348A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |