Patent US4005619A successfully refreshed from Google Patents.
US4005619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steplessly settable elliptical gearing
Assignee: Individual
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Filing: 1975-10-15
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Granted: 1977-02-01
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Expires: 1995-10-15
Abstract
Abstract A steplessly settable gear box provided with a slidable head coupled to an output shaft is disclosed. The slidable head is slidably mounted on a first spur gear coupled to an input shaft and in mesh with an internally toothed fixed annular gear. A second spur gear is in mesh with an internally toothed angularly settable annular gear and the head is so coupled to the second spur gear as to be slidably deplaceable relative to the axis of rotation of the first spur gear in dependence on the angular setting of the last mentioned annular gear.
Inventors
- 👤 Alfred Schmermund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:07
CPC Classifications
F; F16; F16H; F16H35/00; F16H35/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
142 words
A gear box comprising in combination: a housing; an input shaft extending into said housing; an output shaft extending into said housing; a first internally toothed annular gear fixedly secured to said housing; a first spur gear coupled to said input shaft and disposed within said first internally toothed annular gear to rollably engage the teeth thereof; a second internally toothed annular gear supported by said housing to be angularly settable with respect thereto; a second spur gear disposed within said second internally toothed annular gear to rollably engage the teeth thereof; and a sliding head element disposed within said housing and slidably supported on said first spur gear, said head element being coupled to said output shaft and being steplessly displaceable relative thereto through said second spur gear in dependence upon the angular setting of said second internally toothed annular gear.
Claim 2
Dependent Claim
142 words
A gear box comprising in combination: a housing; an input shaft extending into said housing; an output shaft extending into said housing; a first internally toothed annular gear fixedly secured to said housing; a first spur gear coupled to said input shaft and disposed within said first internally toothed annular gear to rollably engage the teeth thereof; a second internally toothed annular gear supported by said housing to be angularly settable with respect thereto; a second spur gear disposed within said second internally toothed annular gear to rollably engage the teeth thereof; and a sliding head element disposed within said housing and slidably supported on said first spur gear, said head element being coupled to said output shaft and being steplessly displaceable relative thereto through said second spur gear in dependence upon the angular setting of said second internally toothed annular gear.
Claim 3
Dependent Claim
26 words
A gear box as defined in claim 1, wherein the pitch circle diameter of said first annular gear is twice that of said first spur gear.
Claim 4
Dependent Claim
26 words
A gear box as defined in claim 1, wherein said head is provided with a toothed rack engaging a pinion coupled to said second spur gear.
Claim 5
Dependent Claim
30 words
A gear box as defined in claim 1, wherein said head is provided with a roller engaging a track on a member carried by said output shaft to rotate therewith.
Claim 6
Dependent Claim
24 words
A gear box as defined in claim 1, wherein said output shaft is disposed eccentrically with respect to the axis of said input shaft.
Claim 7
Dependent Claim
20 words
A gear box as defined in claim 1, wherein said second annular gear is angularly settable by an adjuster spindle.
Claim 8
Dependent Claim
27 words
A gear box as defined in claim 6, wherein said adjuster spindle comprises a worm spindle co-operating with a worm gear provided on said second annular gear.
Claim 9
Dependent Claim
18 words
A gear box as defined in claim 6, wherein said adjuster spindle is provided with a self-locking thread.
Claim 10
Dependent Claim
29 words
A gear box as defined in claim 1, wherein said output shaft is so mounted as to be selectably displaceable radially relative to the axis of said input shaft.
Claim 11
Dependent Claim
56 words
A gear box as defined in claim 1, wherein said head is mounted to be slidably displaceable in a casing provided on said first spur gear, said head being selectably displaceably by displacement means comprising a spindle extending into said casing, a nut on said head, and a pair of bevel gears mounted on said spindle.
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) | 1980-02-01 | 1980-08-02 | 1981-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-01 | 1984-08-02 | 1985-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-01 | 1988-08-02 | 1989-02-01 | $7700.00 | Window Closed / Lapsed |