Patent US4140014A successfully refreshed from Google Patents.
US4140014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lagged drive wheels
Assignee: Albany International Corp
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Filing: 1977-07-01
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Granted: 1979-02-20
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Expires: 1997-07-01
Abstract
Abstract The disclosure is of a friction drive wheel of the type employed for driving continuous conveyor belts. The wheel is lagged with a textile fabric which comprises a base of woven polyester yarn and a friction surface of polyester textile fibers needled to the base. The lagged wheels of the invention exhibit enhanced durability over prior art frictional drive wheels, reducing the down time of conveyor units incorporating them. In comparison to asbestos lagged drive wheels there is also a reduction of potential health hazards to operating personnel as will be appreciated by industrial health personnel.
Inventors
- 👤 Donald B. Gradoni
- 👤 Stephen S. Dombrosky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:16
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/32; F16H55/36; F16H55/38; B; B29; B29D; B29D99/00; B29D99/0032; B29D99/0035; B65; B65G; B65G23/00; B65G23/02; B65G23/04; B65G39/00; B65G39/02; B65G39/07; B29L; B29L2031/00; B29L2031/32; B29L2031/324
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
82 words
A friction drive wheel which comprises; (a) a wheel having a hub, a felly and means for supporting said felly on the hub; and (b) a traction surface member mounted on the outer periphery of said felly, for driving an endless belt, said member comprising, (i) a base of woven polyester yarn; and (ii) a friction drive surface of polyester fibers needled to said base, said fibers being oriented in different directions to achieve heterogenicity in the drive surface of said member.
Claim 2
Dependent Claim
82 words
A friction drive wheel which comprises; (a) a wheel having a hub, a felly and means for supporting said felly on the hub; and (b) a traction surface member mounted on the outer periphery of said felly, for driving an endless belt, said member comprising, (i) a base of woven polyester yarn; and (ii) a friction drive surface of polyester fibers needled to said base, said fibers being oriented in different directions to achieve heterogenicity in the drive surface of said member.
Claim 3
Dependent Claim
15 words
The wheel of claim 1 wherein said means for supporting comprises a plurality of spokes.
Claim 4
Dependent Claim
15 words
The wheel of claim 1 wherein said polyester yarns are spun in a multi-layer weave.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-19 | 1982-08-21 | 1983-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-19 | 1986-08-21 | 1987-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-19 | 1990-08-21 | 1991-02-20 | $7700.00 | Window Closed / Lapsed |