Patent US3916716A successfully refreshed from Google Patents.
US3916716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fine-toothed gear pair consisting of synthetic material
Assignee: Olympia Werke AG
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Filing: 1975-01-16
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Granted: 1975-11-04
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Expires: 1995-01-16
Abstract
Abstract A fine-toothed gear pair is formed of a driving member and a driven member; the teeth of one gear member are made of a fully elastic material and the teeth of the other gear member are made of a material which is less elastic than the other. The shape of the teeth is such that, when the meshing parts of the two gear members are passing the geometrical connection line between the center points of curvature of the two gear members, A. A FULL SURFACE TOUCHING OCCURS BETWEEN THE HEAD FLANK OF THE TEETH OF THE LESS ELASTIC GEAR MEMBER AND THE FOOT FLANK OF THE TEETH OF THE FULLY ELASTIC GEAR MEMBER; B. THE DIRECTION OF LOAD OF THE MESHING TEETH OF THE TOOTH GEAR PAIR IS NORMAL TO THE FOOT FLANK OF THE TEETH OF THE FULLY ELASTIC GEAR MEMBER; AND C. THE HEAD FLANK OF THE TEETH OF THE LESS ELASTIC GEAR MEMBER IS INCLINED APPROXIMATELY BY 5* STEEPER WITH REGARD TO THE FOOT FLANK OF THE TEETH OF THE FULLY ELASTIC GEAR MEMBER, WHEREBY ONLY A SMALL DEFORMATION OCCURS IN THE DIRECTION OF THE DEEPEST POINT OF THE FOOT FLANK OF THE TEETH OF THE FULLY ELASTIC GEAR MEMBER.
Inventors
- 👤 Albert Rix
- 👤 Hans Fuchs
- 👤 Rolf Moritz
- 👤 Erhard Ubben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:11
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/02; F16H55/08; F16H55/14; F16H2055/0893; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19949; Y10T74/19963; Y10T74/19967; Y10T74/19972
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
218 words
In a fine-toothed gear pair formed of a driving gear member and a driven gear member; the teeth of one gear member being made of a fully elastic material and the teeth of the other gear member being made of a material which is less elastic than the other, each tooth having a head flank and a foot flank; the improvement wherein the shape of the teeth being such that, when the meshing parts of the two gear members are passing the geometrical connection line between the center points of curvature of the two gear members, a. a full surface touching occurs between the head flank of the teeth of the less elastic gear member and the foot flank of the teeth of the fully elastic gear member; b. the direction of load of the meshing teeth of the tooth gear pair is normal to the foot flank of the teeth of the fully elastic gear member; and c. the head flank of the teeth of the less elastic gear member is inclined approximately by 5* steeper with regard to the foot flank of the teeth of the fully elastic gear member for effecting only a small deformation in the direction of the deepest point of the foot flank of the teeth of the fully elastic gear member.
Claim 2
Dependent Claim
218 words
In a fine-toothed gear pair formed of a driving gear member and a driven gear member; the teeth of one gear member being made of a fully elastic material and the teeth of the other gear member being made of a material which is less elastic than the other, each tooth having a head flank and a foot flank; the improvement wherein the shape of the teeth being such that, when the meshing parts of the two gear members are passing the geometrical connection line between the center points of curvature of the two gear members, a. a full surface touching occurs between the head flank of the teeth of the less elastic gear member and the foot flank of the teeth of the fully elastic gear member; b. the direction of load of the meshing teeth of the tooth gear pair is normal to the foot flank of the teeth of the fully elastic gear member; and c. the head flank of the teeth of the less elastic gear member is inclined approximately by 5* steeper with regard to the foot flank of the teeth of the fully elastic gear member for effecting only a small deformation in the direction of the deepest point of the foot flank of the teeth of the fully elastic gear member.
Claim 3
Dependent Claim
36 words
In a fine-toothed gear pair as defined in claim 1, wherein the spacing between the teeth of the less elastic gear member is smaller than the spacing of the teeth of the fully elastic gear member.
Claim 4
Dependent Claim
60 words
In a fine-toothed gear pair as defined in claim 1, wherein the teeth of both gear members have short radial foot and head flanks; the radial head flanks of one gear member mating with the radial foot flanks of the other gear member when passing through the connecting line between the center points of curvature of the two gear members.
Claim 5
Dependent Claim
86 words
In a fine-toothed gear pair as defined in claim 1, wherein the spacing between the teeth of the less elastic gear member is smaller than the spacing of the teeth of the fully elastic gear member, and the teeth of both gear meMbers have short radial foot and head flanks; the radial head flanks of one gear member mating with the radial foot flanks of the other gear member when passing through the connecting line between the center points of curvature of the two gear members.
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) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |