Patent US2624054A successfully refreshed from Google Patents.
US4023441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed reducing device
Assignee: Individual
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Filing: 1976-01-21
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Granted: 1977-05-17
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Expires: 1996-01-21
Abstract
Abstract A speed reducing device which is capable of large speed reductions and torque multiplication in a single stage is disclosed. The device includes input and output shafts in axial alignment, together with a transformer gear component having primary and secondary gears which rotate together. The primary gear engages a fixed gear spline while the secondary gear engages a rotatable output gear spline. This combination of gears, together with an eccentric and counterweight mounted on the input shaft, provides a system having numerous advantages in the field of high-ratio mechanical power transmission.
Inventors
- 👤 Jean-Pierre F. Osterwalder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:13
CPC Classifications
F; F16; F16H; F16H1/00; F16H1/28; F16H1/32; F16H2001/2881; F16H2001/328
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
331 words
A speed reducing device, comprising: an input shaft; an output transmitting member journaled in axial alignment with said input shaft; an eccentric and a counterweight carried by the input shaft, said eccentric being formed as two sections, said counterweight also being formed as two sections, each counterweight section being formed as an integral unit with a respective eccentric section, the center of gravity of the counterweight lying on a line which extends from the input shaft diametrically opposite to a line from the input shaft to the center of gravity of the eccentric; a primary gear and a secondary gear mounted upon the eccentric for rotation together about said input shaft, said primary gear having a different number of teeth than said secondary gear, the primary and secondary gears being integrally joined with an opening on either side to accommodate one of said counterweight sections; a keyway located in the input shaft between the two sections of the eccentric; a key positioned within the keyway to maintain the sections of the eccentric in alignment; a fixed gear spline in engagement with said primary gear, the primary gear having a smaller number of teeth than the fixed gear spline; said output transmitting member including a rotatable output gear spline in engagement with said secondary gear, the secondary gear having a smaller number of teeth than the output gear spline; a casing secured to said fixed gear spline; a bearing assembly mounted between said casing and said rotatable output gear spline in a direct straight line with the lines of force transferred by the gear teeth which are in mesh, said output gear spline being in direct engagement with said fixed gear spline through said casing and said bearing assembly, said casing and bearing assembly being located radially outwardly from said secondary gear to thereby achieve a short, compact, stiff torque path which extends from the fixed gear spline through the periphery of the primary and secondary gears to the output gear spline.
Claim 2
Dependent Claim
331 words
A speed reducing device, comprising: an input shaft; an output transmitting member journaled in axial alignment with said input shaft; an eccentric and a counterweight carried by the input shaft, said eccentric being formed as two sections, said counterweight also being formed as two sections, each counterweight section being formed as an integral unit with a respective eccentric section, the center of gravity of the counterweight lying on a line which extends from the input shaft diametrically opposite to a line from the input shaft to the center of gravity of the eccentric; a primary gear and a secondary gear mounted upon the eccentric for rotation together about said input shaft, said primary gear having a different number of teeth than said secondary gear, the primary and secondary gears being integrally joined with an opening on either side to accommodate one of said counterweight sections; a keyway located in the input shaft between the two sections of the eccentric; a key positioned within the keyway to maintain the sections of the eccentric in alignment; a fixed gear spline in engagement with said primary gear, the primary gear having a smaller number of teeth than the fixed gear spline; said output transmitting member including a rotatable output gear spline in engagement with said secondary gear, the secondary gear having a smaller number of teeth than the output gear spline; a casing secured to said fixed gear spline; a bearing assembly mounted between said casing and said rotatable output gear spline in a direct straight line with the lines of force transferred by the gear teeth which are in mesh, said output gear spline being in direct engagement with said fixed gear spline through said casing and said bearing assembly, said casing and bearing assembly being located radially outwardly from said secondary gear to thereby achieve a short, compact, stiff torque path which extends from the fixed gear spline through the periphery of the primary and secondary gears to the output gear spline.
Claim 3
Dependent Claim
19 words
The device of claim 1 wherein the primary gear has a greater number of teeth than the secondary gear.
Claim 4
Dependent Claim
19 words
The device of claim 1 wherein the output gear spline is mounted on a pair of preloaded peripheral bearings.
Claim 5
Dependent Claim
273 words
A speed reducing device comprising: an input shaft; an output transmitting member journaled in axial alignment with said input shaft; an eccentric and a counterweight carried by the input shaft, the center of gravity of the counterweight lying on a line which extends from the input shaft diametrically opposite to a line from the input shaft to the center of gravity of the eccentric; a primary gear and a secondary gear formed integrally and mounted upon the eccentric for rotation together about said input shaft, said primary gear having a different number of teeth than said secondary gear, said counterweight being connected to the outer end of the input shaft outwardly of the primary and secondary gears; a fixed gear spline in engagement with said primary gear, the primary gear having a smaller number of teeth than the fixed gear spline; said output transmitting member including a rotatable output gear spline in engagement with said secondary gear, the secondary gear having a smaller number of teeth than the output gear spline; said rotatable output gear spline being mounted on a bearing assembly installed on the outer periphery of said fixed gear spline, said bearing assembly being in a direct straight line with the lines of force transferred by the gear teeth which are in mesh, said output gear spline being in direct engagement with said fixed gear spline through said bearing assembly, said bearing assembly being located radially outwardly from said primary gear to thereby achieve a short, compact, stiff torque path which extends from the fixed gear spline through the periphery of the primary and secondary gears to the output gear spline.
Claim 6
Dependent Claim
273 words
A speed reducing device comprising: an input shaft; an output transmitting member journaled in axial alignment with said input shaft; an eccentric and a counterweight carried by the input shaft, the center of gravity of the counterweight lying on a line which extends from the input shaft diametrically opposite to a line from the input shaft to the center of gravity of the eccentric; a primary gear and a secondary gear formed integrally and mounted upon the eccentric for rotation together about said input shaft, said primary gear having a different number of teeth than said secondary gear, said counterweight being connected to the outer end of the input shaft outwardly of the primary and secondary gears; a fixed gear spline in engagement with said primary gear, the primary gear having a smaller number of teeth than the fixed gear spline; said output transmitting member including a rotatable output gear spline in engagement with said secondary gear, the secondary gear having a smaller number of teeth than the output gear spline; said rotatable output gear spline being mounted on a bearing assembly installed on the outer periphery of said fixed gear spline, said bearing assembly being in a direct straight line with the lines of force transferred by the gear teeth which are in mesh, said output gear spline being in direct engagement with said fixed gear spline through said bearing assembly, said bearing assembly being located radially outwardly from said primary gear to thereby achieve a short, compact, stiff torque path which extends from the fixed gear spline through the periphery of the primary and secondary gears to the output gear spline.
Claim 7
Dependent Claim
19 words
The device of claim 4 wherein the secondary gear has a greater number of teeth than the primary gear.
Claim 8
Dependent Claim
19 words
The device of claim 4 wherein the output gear spline is mounted on a pair of preloaded peripheral bearings.
Claim 9
Dependent Claim
18 words
The device of claim 4 wherein the rotatable output gear spline is in the form of a sprocket.
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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) | 1980-05-16 | 1980-11-15 | 1981-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-16 | 1984-11-15 | 1985-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-16 | 1988-11-15 | 1989-05-17 | $7700.00 | Window Closed / Lapsed |