US3789682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crown-shaped pulley lagging
Assignee: Holz Rubber Company Inc
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Filing: 1972-03-27
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Granted: 1974-02-05
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Expires: 1992-03-27
Abstract
Abstract Pulley lagging comprising center and end members formed for mounting in end-to-end relation on and across the peripheral surface of a pulley parallel to the pulley axis. The members are formed with belt traction material having a constant thickness over the length of the center member and having an equal thickness at the abutting ends of the end members but tapering over the lengthwise dimension of the end members to a lesser thickness at the outer ends thereof.
Inventors
- 👤 W Holz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:09
CPC Classifications
B; B65; B65G; B65G39/00; B65G39/02; B65G39/07
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
114 words
In a traction-face structure for a smooth flat belt driving pulley face, said structure having a plurality of circumferentially spaced axially extending initially separate traction sections formed for side-by-side placement circumferentially of a pulley face, the improvement providing the conversion of any of a plurality of said pulley faces of different axially extending widths to an edge-crown shape and comprising: each of said sections consisting of three end-to-end axially extending components comprising: a center component formed to provide over its length a substantially constant belt gripping diameter and constructed for cutting into various lengths for different width pulleys; and a pair of opposite end components formed to provide a relatively reduced belt gripping diameter.
Claim 2
Dependent Claim
114 words
In a traction-face structure for a smooth flat belt driving pulley face, said structure having a plurality of circumferentially spaced axially extending initially separate traction sections formed for side-by-side placement circumferentially of a pulley face, the improvement providing the conversion of any of a plurality of said pulley faces of different axially extending widths to an edge-crown shape and comprising: each of said sections consisting of three end-to-end axially extending components comprising: a center component formed to provide over its length a substantially constant belt gripping diameter and constructed for cutting into various lengths for different width pulleys; and a pair of opposite end components formed to provide a relatively reduced belt gripping diameter.
Claim 3
Dependent Claim
67 words
The improvement of claim 1, the thickness of said center component being substantially constant over its length to provide said constant belt gripping diameter; and the thickness of said end components at their ends contiguous to said center component being substantially the same as said thickness of said center component and being tapered to reduced thickness at their opposite ends to provide said reduced belt gripping diameter.
Claim 4
Dependent Claim
45 words
The improvement of claim 2, said components having length such that the ratio of the length of said constant belt gripping diameter to the total belt gripping length both measured axially of said pulley face is in the range of about 0.5 to about 0.7.
Claim 5
Dependent Claim
43 words
The improvement of claim 3, said end components having length portions contiguous to said center component of a substantially constant thickness substantially the same as said center component whereby the length of said constant belt gripping diameter is extended onto said end components.
Claim 6
Dependent Claim
111 words
The improvement of claim 3, said components each comprising a backing plate adapted for mounting on said pulley face and a section of belt traction material on said plate with said plates projecting from said sections at the circumferentially opposite sides thereof to provide side flanges; and a plurality of elongated strips adapted for securing to said pulley face parallel to the pulley axis and having a plurality of longitudinally spaced first portions positioned in abutment with the edge face of one of said flanges, and a plurality of longitudinally spaced second portions intermediate said first portions and radially offset therefrom and positioned in overlying relation to said last named flange.
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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |