Patent US4308760A successfully refreshed from Google Patents.
US4308760A
Expired / Lapsed
US
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Heavy load capability gear wheel
Assignee: ThyssenKrupp Technologies AG
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Filing: 1980-03-17
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Granted: 1982-01-05
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Expires: 2000-03-17
Abstract
Abstract A gear is disclosed with a heavy loading capacity which has teeth roots between adjacent gear teeth and contact area patterns on the face of each gear tooth. Each tooth root includes a concave fillet running substantially in a direction of the rolling element generator line of the gear. The top of each tooth is substantially equidistant and a mirror image of the tooth root fillet.
Inventors
- 👤 Otto Voigtlander
- 👤 Walter Mages
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:52
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/02; F16H55/08; F16H55/0886; F16H55/088; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49462; Y10T29/49467; Y10T74/00; Y10T74/19; Y10T74/19949; Y10T74/19958; Y10T74/19963; Y10T74/19972
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
87 words
A gear with heavy load capacity having a tooth root between two adjacent gear teeth and a contact pattern on each gear tooth comprising, each tooth root forming a concave fillet running substantially in the direction of a rolling element generator line tangent, a tooth top of each tooth having a form which is equidistant from a tooth root of a mating gear, the fillet form of the tooth root between two adjacent gear teeth being equidistant from the contact pattern of the two adjacent gear teeth.
Claim 2
Dependent Claim
87 words
A gear with heavy load capacity having a tooth root between two adjacent gear teeth and a contact pattern on each gear tooth comprising, each tooth root forming a concave fillet running substantially in the direction of a rolling element generator line tangent, a tooth top of each tooth having a form which is equidistant from a tooth root of a mating gear, the fillet form of the tooth root between two adjacent gear teeth being equidistant from the contact pattern of the two adjacent gear teeth.
Claim 3
Dependent Claim
22 words
A gear according to claim 1, wherein the fillet form of the tooth root is in the shape of an arc segment.
Claim 4
Dependent Claim
30 words
A gear according to claim 1, wherein the fillet form of the tooth root is made up of at least two straight lines meeting at at least one obtuse angle.
Claim 5
Dependent Claim
24 words
A gear according to claim 1, wherein the fillet form of the tooth root is in the shape of a segment of an ellipse.
Claim 6
Dependent Claim
35 words
A gear according to claim 1, wherein each gear tooth has a surface which includes at least one of a vertical and lateral convexity whereby the contact area of each gear tooth form elliptic areas.
Claim 7
Dependent Claim
38 words
A gear according to claim 1, wherein each fillet of each tooth root describes an angle of at least 45° with the rolling element generator line and projects laterally into an area of the rolling element generator line.
Claim 8
Dependent Claim
12 words
A gear according to claim 6, wherein the angle is approximately 90°.
Claim 9
Dependent Claim
29 words
A gear according to claim 1, comprising a bevel gear the concave fillet thereof running substantially in the direction of a rolling cone generatrix tangent of the bevel gear.
Claim 10
Dependent Claim
19 words
A gear according to claim 8, wherein the fillet runs substantially in the direction of the rolling cone generatrix.
Claim 11
Dependent Claim
49 words
A gear according to claim 8, including a tubular section having an axis parallel to an axis of the gear, a flange section extending radially outwardly of the tubular section, the rolling cone generatrix extending from an edge of the flange section to an edge of the tubular section.
Claim 12
Dependent Claim
126 words
A bevel gear wheel having heavy load capability comprising a tubular section having an axis parallel to an axis of the bevel gear wheel, a flange section extending radially outwardly of the tubular section, a rolling cone generatrix of the bevel gear extending from an edge of the flange section to an edge of the tubular section, a tooth root between each two adjacent gear teeth having the form of a concave fillet extending substantially in the direction of the rolling cone generatrix, each gear tooth having a top formed in a mirror image shape to the tooth root about the rolling cone generatrix, each point of the tooth root being equidistant from a contact pattern on a surface of each of said adjacent gear teeth.
Claim 13
Dependent Claim
126 words
A bevel gear wheel having heavy load capability comprising a tubular section having an axis parallel to an axis of the bevel gear wheel, a flange section extending radially outwardly of the tubular section, a rolling cone generatrix of the bevel gear extending from an edge of the flange section to an edge of the tubular section, a tooth root between each two adjacent gear teeth having the form of a concave fillet extending substantially in the direction of the rolling cone generatrix, each gear tooth having a top formed in a mirror image shape to the tooth root about the rolling cone generatrix, each point of the tooth root being equidistant from a contact pattern on a surface of each of said adjacent gear teeth.
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) | 1985-01-04 | 1985-07-06 | 1986-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-04 | 1989-07-06 | 1990-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-04 | 1993-07-06 | 1994-01-05 | $7700.00 | Window Closed / Lapsed |