US3888134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eccentric shaft mounting apparatus
Assignee: Individual
•
Filing: 1974-06-03
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Granted: 1975-06-10
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Expires: 1994-06-03
Abstract
Abstract A power transmission apparatus employs interchangeable shafts rotatably mounted in discs formed with off-center shaft mounting apertures. The eccentrically drilled discs are rotatably mounted in a supporting frame, so that they can be rotated to adjust the position of a rotary shaft with respect to the supporting frame. The apparatus uses a plurality of interchangeable rotary shafts, each with an attached gear of different diameter. The eccentric disc allows each of the different size gears and attached shafts to be positioned in such a way that the interchangeable gear engages a second, non-interchangeable gear attached to a shaft rotatably mounted to the supporting frame. The apparatus permits the gear ration of the pair of gears in the transmission apparatus to be varied without replacing both members of the gear pair and permits the position of the interchangeable rotary shaft to be adjusted with respect to the supporting frame.
Inventors
- 👤 Lawrence Thomas Miranda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:31
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/02; F16H57/021; F16H57/022; F16C; F16C23/00; F16C23/10; F16H57/023; F16C19/00; F16C19/02; F16C19/04; F16C19/06; F16C2361/00; F16C2361/61; F16H2057/0222; F16H2057/0224; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19614; Y10T74/19623; Y10T74/19642; Y10T74/19679; Y10T74/21; Y10T74/2186
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
213 words
A power transmission apparatus with an adjustable, eccentric shaft mounting comprising: a. a supporting frame, b. a first rotary shaft rotatably mounted in the supporting frame, c. a first toothed wheel mounted on the first rotary shaft, d. rotatably adjustable eccentric bushings mounted in the supporting frame and capable of supporting a second rotary shaft at a point offset from the center of the eccentric bushing, and e. a plurality of interchangeable second rotary shaft and second gear assemblies, rotatably mountable in the eccentric bushings comprising a plurality of second rotary shafts and a plurality of second toothed wheels of various diameters, each mounted on one of the interchangeable second rotary shafts and each equipped with a tooth structure capable of intermeshing with the tooth structure of the first toothed wheel; whereby, a gear ratio of the power transmission apparatus can be adjusted by removing one second rotary shaft and second toothed wheel assembly from the eccentric bushings, mounting another second rotary shaft and second toothed wheel assembly on the eccentric bushings, and adjusting the eccentric bushings so that a replacement second rotary shaft and second toothed wheel assembly is supported in such a position that the tooth structure of the second toothed wheel engages the tooth structure of the first toothed wheel.
Claim 2
Dependent Claim
213 words
A power transmission apparatus with an adjustable, eccentric shaft mounting comprising: a. a supporting frame, b. a first rotary shaft rotatably mounted in the supporting frame, c. a first toothed wheel mounted on the first rotary shaft, d. rotatably adjustable eccentric bushings mounted in the supporting frame and capable of supporting a second rotary shaft at a point offset from the center of the eccentric bushing, and e. a plurality of interchangeable second rotary shaft and second gear assemblies, rotatably mountable in the eccentric bushings comprising a plurality of second rotary shafts and a plurality of second toothed wheels of various diameters, each mounted on one of the interchangeable second rotary shafts and each equipped with a tooth structure capable of intermeshing with the tooth structure of the first toothed wheel; whereby, a gear ratio of the power transmission apparatus can be adjusted by removing one second rotary shaft and second toothed wheel assembly from the eccentric bushings, mounting another second rotary shaft and second toothed wheel assembly on the eccentric bushings, and adjusting the eccentric bushings so that a replacement second rotary shaft and second toothed wheel assembly is supported in such a position that the tooth structure of the second toothed wheel engages the tooth structure of the first toothed wheel.
Claim 3
Dependent Claim
27 words
The power transmission apparatus of claim 1 wherein the first toothed wheel is the driving toothed wheel and the second toothed wheel is the driven toothed wheel.
Claim 4
Dependent Claim
27 words
The power transmission apparatus of claim 1 wherein the first toothed wheel is the driven toothed wheel and the second toothed wheel is the driving toothed wheel.
Claim 5
Dependent Claim
32 words
The power transmission apparatus of claim 1 wherein the second rotary shafts are rotatably mounted in the eccentric bushings by means of circular ball bearings and raceways mounted in The eccentric bushings.
Claim 6
Dependent Claim
81 words
The power transmission apparatus of claim 1 wherein the second toothed wheels are interchangeable on the second rotary shafts whereby the gear ratio of the power transmission apparatus may be varied by replacing one second toothed wheel with another second toothed wheel of a different diameter and adjusting the eccentric bushings so that the replacement second toothed wheel is supported in such a position that the tooth structure of second toothed wheel engages the tooth structure of the first toothed wheel.
Claim 7
Dependent Claim
25 words
The power transmission apparatus of claim 1 wherein the eccentric bushings are disc eccentrics formed with off center apertures to receive the second rotary shafts.
Claim 8
Dependent Claim
56 words
The power transmission apparatus of claim 6 wherein the disc eccentrics are set into circular apertures in the supporting frame so that the position of the off center apertures in the disc eccentrics can be adjusted with respect to the supporting frame by rotating the disc eccentrics within their respective circular apertures in the supporting frame.
Claim 9
Dependent Claim
166 words
The power transmission apparatus of claim 7 wherein the disc eccentrics are of a thickness approximately equal to that of the supporting frame and are formed with perimetric, first circular flanges of a thickness of approximately one-half that of the supporting frame, of an outside diameter approximately equal to that of the circular aperture in the supporting frame, and with an annular face in the same plane as a circular face of the disc eccentric; and wherein the circular apertures in the supporting frame are formed with second circular flanges on circular perimeters of the apertures of a thickness of approximately one-half that of the supporting frame, of an inside diameter approximately equal to that of the disc eccentric, and with an annular face in the same plane as a face of the supporting frame; whereby the disc eccentrics are flush mounted in the circular apertures in the supporting frame and are retained from passing through the circular apertures by a system of interengaging, concentric flanges.
Claim 10
Dependent Claim
81 words
The power transmission apparatus of claim 8 further comprising set screws insertable into the supporting frame adjacent to the circular apertures, with screw heads capable of engaging the first circular flanges of the disc eccentrics when the disc eccentrics are inserted into the circular apertures in the supporting frame, whereby the first circular flanges are retained in a position of engagement with the second circular flanges, and the disc eccentrics are thereby retained in the circular apertures in the supporting frame.
Claim 11
Dependent Claim
19 words
The power transmission apparatus of claim 7 wherein the disc eccentrics are welded in position on the supporting frame.
Claim 12
Dependent Claim
59 words
The power transmission apparatus of claim 7 wherein the disc eccentrics are formed with circular flanges of a diameter larger than that of the circular apertures in the supporting frame, which circular flanges are formed with elongated perimetric apertures to receive set screws driven into the supporting frame, whereby the disc eccentrics are adjusted and locked in fixed positions.
Claim 13
Dependent Claim
39 words
The power transmission apparatus of claim 7 wherein the disc eccentrics and the circular apertures in the supporting frame are formed with helical threads so that the disc eccentrics can be screwed into the apertures in the supporting frame.
Claim 14
Dependent Claim
41 words
The power transmission apparatus of claim 1 wherein the supporting frame is the chassis of a powered model racing car, whereby the gear ratio of the power transmission system may be varied to change the speed of the model racing car.
Claim 15
Dependent Claim
42 words
The power transmission apparatus of claim 1 wherein the supporting frame is the gear box of a powered model racing car, which gear box is comprised of two parallel sides, each formed with an aperture for receiving a rotatably adjustable eccentric bushing.
Claim 16
Dependent Claim
48 words
The power transmission apparatus of claim 2 further comprising a model racing car drive wheel mounted to the second rotary shaft, Whereby the speed and position of the drive wheel are adjustable by rotating the adjustable, eccentric bushings and interchanging second rotary shaft and second toothed wheel assemblies.
Claim 17
Dependent Claim
112 words
An adjustable, eccentric wheel mounting apparatus for model cars comprising: a chassis member, rotatably adjustable eccentric bushings, mounted in the chassis member and capable of supporting a rotary shaft, interchangeable, rotary shafts passing through the chassis and rotatably mounted in the eccentric bushings, and a plurality of model car wheels of different diameters, each attached to an interchangeable rotary shaft; whereby a distance between the model car wheels and a position of the rotary shafts with respect to the chassis member can be adjusted by rotating the eccentric bushings, and the size of the model car wheels can be changed by inserting a rotary shaft with an attached wheel of different diameter.
Claim 18
Dependent Claim
112 words
An adjustable, eccentric wheel mounting apparatus for model cars comprising: a chassis member, rotatably adjustable eccentric bushings, mounted in the chassis member and capable of supporting a rotary shaft, interchangeable, rotary shafts passing through the chassis and rotatably mounted in the eccentric bushings, and a plurality of model car wheels of different diameters, each attached to an interchangeable rotary shaft; whereby a distance between the model car wheels and a position of the rotary shafts with respect to the chassis member can be adjusted by rotating the eccentric bushings, and the size of the model car wheels can be changed by inserting a rotary shaft with an attached wheel of different diameter.
Claim 19
Dependent Claim
184 words
The adjustable, eccentric wheel mounting apparatus for model cars of claim 16 further comprising: a first rotary shaft rotatably mounted to the chassis member, a first toothed wheel mounted on the first rotary shaft, a plurality of interchangeable second rotary shafts to which the model car''s drive wheels are mounted and which second rotary shafts are rotatably mountable in the eccentric bushings, a plurality of second, toothed wheels of various diameters, each mounted on one of the interchangeable second rotary shafts and each equipped with a tooth structure capable of intermeshing with the tooth structure of the first toothed wheel, whereby a gear ratio of a model car power transmission apparatus can be adjusted by removing one second rotary shaft and second toothed wheel assembly from the eccentric bushings, mounting another second rotary shaft and second toothed wheel assembly on the eccentric bushings, and adjusting the eccentric bushings so that a replacement second rotary shaft and second toothed wheel assembly is supported in such a position that the tooth structure of the second toothed wheel engages the tooth structure of the first toothed wheel.
Claim 20
Dependent Claim
30 words
The adjustable, eccentric wheel mounting apparatus for model cars of claim 16 wherein the eccentric bushings are disc eccentrics formed with off center apertures to receive the second rotary shafts.
Claim 21
Dependent Claim
61 words
The adjustable, eccentric wheel mounting apparatus for model cars of claim 18 wherein the disc eccentrics are set into circular apertures in the chassis member so that the position of the off center apertures in the disc eccentrics may be adjusted with respect to the chassis member by rotating the disc eccentrics within their respective circular apertures in the chassis member.
Claim 22
Dependent Claim
171 words
The adjustable, eccentric wheel mounting apparatus for model cars of claim 19 wherein the disc eccentrics are of a thickness approximately equal to that of the chassis member and are formed with perimetric, first circular flanges of a thickness of approximately one-half that of the chassis member, of an outside diameter approximately equal to that of the circular aperture in the chassis member, and with an annular face in the same plane as a circular face of the disc eccentric; and the circular apertures in the chassis member are formed with second circular flanges on circular perimeters of the apertures of a thickness of approximately one half that of the chassis member, of an inside diameter approximately equal to that of the disc eccentric, and with an annular face in the same plane as a face of the chassis member, whereby the disc eccentrics are flush mounted in the circular apertures in the chassis member and are prevented from passing through the circular apertures by a system of interengaging, concentric flanges.
Claim 23
Dependent Claim
83 words
The adjustable, eccentric wheel mounting apparatus for model cars of claim 20 further comprising set screws insertable into the chassis member adjacent to the circular apertures, with heads capable of engaging the first circular flanges of disc ecCentrics when the disc eccentrics are inserted into the circular apertures in the chassis member, whereby the first circular flanges are retained in a position of engagement with the second circular flanges, and the disc eccentrics are retained within the circular apertures in the chassis member.
Claim 24
Dependent Claim
24 words
The adjustable, eccentric wheel mounting apparatus for model cars of claim 19 wherein the disc eccentrics are welded in position on the chassis member.
Claim 25
Dependent Claim
65 words
The adjustable, eccentric wheel mounting apparatus for model cars of claim 19 wherein the disc eccentrics are formed with circular flanges of a diameter larger than that of the circular apertures in the chassis member, which circular flanges are formed with elongated perimetric apertures to receive set screws driven into the chassis member, whereby the disc eccentrics are adjusted and locked in a fixed position.
Claim 26
Dependent Claim
44 words
The adjustable, eccentric wheel mounting apparatus for model cars of claim 19 wherein the disc eccentrics and the circular apertures in the chassis member are formed with helical threads so that the disc eccentrics can be screwed into the apertures in the chassis member.
Claim 27
Dependent Claim
36 words
The adjustable, eccentric wheel mounting apparatus for model cars of claim 16 wherein the rotary shafts are rotatably mounted in the eccentric bushings by means of circular ball bearings and raceways mounted in the eccentric bushings.
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) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |