Patent US3742779A successfully refreshed from Google Patents.
US3742779A
Expired / Lapsed
US
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Segmented gearing
Assignee: BOLIDEN ALLIS CANADA Inc 3136 MAVIS RD MISSISSAUGA ONTARIO L5C 1T8 CANADA A CORP OF PROVINCE OF ONTARIO CANADA
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Filing: 1971-09-03
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Granted: 1973-07-03
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Expires: 1991-09-03
Abstract
Abstract Interchangeable and replacement segment gear portions are provided for incorporation into a segmented composite gear wheel, to facilitate construction, erection and transportation of the gear and to enable rapid repair to the gear wheel upon the occurrence of damage to one or more segments of the gear. Replacement segment gear portions are dimensionally relieved at their securing faces to permit precise matching of the adjoining teeth in operative relationship. The repair of very large gears may be readily effected using such replacement segments.
Inventors
- 👤 M Shaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:33
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/02; F16H55/12; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/1987; Y10T74/19893; Y10T74/1993
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A segmented gear wheel having a plurality of toothed segments secured in mutual complementary relation to provide a substantially continuous toothed gear annulus, each segment including segment rim means supporting the gear teeth and bounded by segment end flanges, spacer means fixedly located between selected adjacent ones of said end flanges to position adjacent teeth in complementary operative relation; and securing means substantially rigidly securing said spacer means in compressed relation between respective said adjacent end flanges in torsional load transmitting relation relative to the gear main axis to maintain said gear teeth in said complementary relation.
Claim 2
Dependent Claim
97 words
A segmented gear wheel having a plurality of toothed segments secured in mutual complementary relation to provide a substantially continuous toothed gear annulus, each segment including segment rim means supporting the gear teeth and bounded by segment end flanges, spacer means fixedly located between selected adjacent ones of said end flanges to position adjacent teeth in complementary operative relation; and securing means substantially rigidly securing said spacer means in compressed relation between respective said adjacent end flanges in torsional load transmitting relation relative to the gear main axis to maintain said gear teeth in said complementary relation.
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |