Patent US2301870A successfully refreshed from Google Patents.
Patent US4458547A successfully refreshed from Google Patents.
US4458547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-metallic sprocket
Assignee: RESINOID ENGINEERING Corp AN IL CORP
•
Filing: 1981-11-17
•
Granted: 1984-07-10
•
Expires: 2001-11-17
Abstract
Abstract An improved non-metallic sprocket, such as the phenolic laminate type, one improvement consisting of sprocket teeth molded from continuous layers of material laminated in a corrugated, sprocket tooth forming construction about the periphery of the sprocket. Another improvement consists of the inclusion of a non-metallic hub fashioned from a length of resin pre-impregnated material, in particular, fiberglass cloth, wound into a tube. During the molding of the sprocket the layers of material forming the tube are laminated into a solid hub.
Inventors
- 👤 Paul E. Fina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:51
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/02; F16H55/06; F16H55/17; F16H55/171; Y; Y10; Y10S; Y10S74/00; Y10S74/10; Y10T; Y10T428/00; Y10T428/21; Y10T428/211; Y10T74/00; Y10T74/19; Y10T74/1987; Y10T74/19893; Y10T74/19921; Y10T74/19949; Y10T74/19963
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
67 words
In a non-metallic sprocket of the type having a hub and a molded web the periphery of which has contour defining teeth having faces to receive or transmit forces to or from said sprocket, the improvement comprising: at least one layer of fabric material molded to and following the contour of said teeth, said material extending across and covering the faces of said teeth to resist wear.
Claim 2
Dependent Claim
67 words
In a non-metallic sprocket of the type having a hub and a molded web the periphery of which has contour defining teeth having faces to receive or transmit forces to or from said sprocket, the improvement comprising: at least one layer of fabric material molded to and following the contour of said teeth, said material extending across and covering the faces of said teeth to resist wear.
Claim 3
Dependent Claim
12 words
The sprocket described in claim 1 wherein said material is fiberglass cloth.
Claim 4
Dependent Claim
67 words
In a non-metallic sprocket of the type having a hub and a web molded about said hub, said web having a periphery profiled to define teeth having axially extending faces, the improvement comprising: a corrugated form of fabric material secured about the periphery of the web conforming to said tooth profile, said form extending axially across and forming the faces of said teeth during the molding thereof.
Claim 5
Dependent Claim
67 words
In a non-metallic sprocket of the type having a hub and a web molded about said hub, said web having a periphery profiled to define teeth having axially extending faces, the improvement comprising: a corrugated form of fabric material secured about the periphery of the web conforming to said tooth profile, said form extending axially across and forming the faces of said teeth during the molding thereof.
Claim 6
Dependent Claim
15 words
The sprocket described in claim 3 wherein said form is superposed layers of fabric material.
Claim 7
Dependent Claim
16 words
The sprocket described in claim 4 wherein at least one of said layers is fiberglass cloth.
Claim 8
Dependent Claim
84 words
An improved molded, non-metallic sprocket of the type having a hub and a web, the periphery of which is contoured to define teeth having faces, the improvement comprising: said hub has a plurality of tubular-shaped layers of fabric material superposed and molded together to form said hub during the molding of said sprocket; and at least one layer of fabric material molded to and following the contour of said teeth, said material extending across and covering the faces of said teeth to resist wear.
Claim 9
Dependent Claim
84 words
An improved molded, non-metallic sprocket of the type having a hub and a web, the periphery of which is contoured to define teeth having faces, the improvement comprising: said hub has a plurality of tubular-shaped layers of fabric material superposed and molded together to form said hub during the molding of said sprocket; and at least one layer of fabric material molded to and following the contour of said teeth, said material extending across and covering the faces of said teeth to resist wear.
Claim 10
Dependent Claim
31 words
The improved sprocket as described in claim 6 wherein said hub consists of a length of fiberglass cloth spirally wound into said tubular shape and molded together to form said hub.
Claim 11
Dependent Claim
21 words
The improved sprocket as described in claim 6 wherein said fabric material following the contour of said teeth is fiberglass cloth.
Claim 12
Dependent Claim
96 words
In a method for molding a non-metallic sprocket in a cylindrical mold having tooth contour-forming wall, said method including positioning a hub in the center of the mold, disposing a tablet of web-forming non-metallic material about said hub, the improvement comprising: wrapping at least one layer of a corrugated fabric material about the periphery of said tablet; and molding said sprocket, said tablet and fabric material received into and assuming the contour of said wall to form teeth, said fabric material following the outer surfaces and extending across the faces of said teeth to resist wear.
Claim 13
Dependent Claim
96 words
In a method for molding a non-metallic sprocket in a cylindrical mold having tooth contour-forming wall, said method including positioning a hub in the center of the mold, disposing a tablet of web-forming non-metallic material about said hub, the improvement comprising: wrapping at least one layer of a corrugated fabric material about the periphery of said tablet; and molding said sprocket, said tablet and fabric material received into and assuming the contour of said wall to form teeth, said fabric material following the outer surfaces and extending across the faces of said teeth to resist wear.
References Cited (Backward Citations)
US266708A
Cited
US1638255A
Cited
US1850684A
Cited
US1504596A
Cited
US1501026A
Cited
US1622116A
Cited
US1912083A
Cited
US2000769A
Cited
US2064723A
Cited
US2229982A
Cited
US2724671A
Cited
US2722130A
Cited
US3026228A
Cited
US3915783A
Cited
US3999445A
Cited
US4207778A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-10 | 1988-01-09 | 1988-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-10 | 1992-01-09 | 1992-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-10 | 1996-01-09 | 1996-07-10 | $7700.00 | Window Closed / Lapsed |