Patent US3747422A successfully refreshed from Google Patents.
US3747422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compensating linkage
Assignee: Individual
•
Filing: 1971-02-19
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Granted: 1973-07-24
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Expires: 1991-02-19
Abstract
Abstract The present invention envisions apparatus for rotating a pair of aligned shafts in equal arcs while allowing relative rotary motion of the shafts. In one embodiment, apparatus embodying the invention may comprise elongated linking means which has positioned on each end thereof a universal joint. An arm may be rigidly secured to each of the aligned rotary shafts and each of the arms thus secured may be operatively connected to one of the universal joints located at the end of the elongated linking means. A power assembly may be provided for moving the linking means in an arc about the parallel shafts thereby rotating the shafts. The power assembly is characterized by means for connecting a portion thereof with a central portion of the linking means in such a manner as to allow pivotal motion of the linking means relative to the power assembly. In addition, a portion of the power assembly is designed to allow limited universal motion of the elongated linking means about an axis normal to the longitudinal axis of the linking means.
Inventors
- 👤 E Rikli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:56
CPC Classifications
A; A01; A01B; A01B63/00; A01B63/14; A01B63/24; A01B63/32; A01C; A01C5/00; A01C5/06; Y; Y10; Y10S; Y10S111/00; Y10S111/926; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
117 words
A compensating linkage interconnecting a pair of aligned, rotatable shafts mounted on a frame which comprises: a. an elongated linking means; b. a universal joint carried at each end of said linking means; c. an arm secured to each of said universal joints; d. means for rigidly securing a first of said arms to a first of said shafts; e. means for rigidly securing the second of said arms to the second of said shafts; and f. a power assembly mounted on said frame for moving the elongated linking means in an arc about a portion of said shafts, said assembly being in operative engagement with the linking means at a point thereon intermediate the ends thereof.
Claim 2
Dependent Claim
117 words
A compensating linkage interconnecting a pair of aligned, rotatable shafts mounted on a frame which comprises: a. an elongated linking means; b. a universal joint carried at each end of said linking means; c. an arm secured to each of said universal joints; d. means for rigidly securing a first of said arms to a first of said shafts; e. means for rigidly securing the second of said arms to the second of said shafts; and f. a power assembly mounted on said frame for moving the elongated linking means in an arc about a portion of said shafts, said assembly being in operative engagement with the linking means at a point thereon intermediate the ends thereof.
Claim 3
Dependent Claim
87 words
The apparatus defined in claim 1 wherein said power assembly comprises: a. a push rod; b. means for connecting the push rod to the linking means to allow relative motion of a portion of the push rod toward and away from the ends of the elongated linking means; c. power means mounted on said frame; and d. a ball joint operatively connecting said power means and said push rod whereby the push rod and the linking means connected thereto may be moved relative to said power means.
Claim 4
Dependent Claim
44 words
The apparatus defined in claim 2 wherein said power means comprises: a. a hydraulic piston; and b. a bell crank pivotally connected to said frame and secured to said hydraulic piston, the ball joint being secured at the outer end of said bell crank.
Claim 5
Dependent Claim
48 words
The apparatus defined in claim 2 wherein the means for connecting the push rod and the linking means comprises a clevis having a pivot pin associated therewith, which pin extends normal to the plane which includes the longitudinal axes of the push rod and of the linking means.
Claim 6
Dependent Claim
98 words
The apparatus defined in claim 1 wherein the linking means comprises: a. an elongated cylinder; b. a first rod slidably received within the interior of said cylinder and projecting therefrom from the first end thereof; c. a second rod slidably receiveD within the interior of said cylinder and projecting therefrom from the second end thereof; and d. one of the universal joints carried by the linking means being secured at the end of said first rod opposite said cylinder and the other of said universal joints being secured at the end of the second rod opposite said cylinder.
Claim 7
Dependent Claim
89 words
The apparatus defined in claim 5 wherein said power assembly comprises: a. a push rod; b. means for connecting the push rod to the linking means to allow relative motion of a portion of the push rod toward and away from the ends of the elongated linking means; c. power means adapted for mounting on said frame; and d. a ball joint operatively connecting said power means and said push rod whereby the push rod and the linking means connected thereto may be moved relative to said power means.
Claim 8
Dependent Claim
43 words
The apparatus defined in claim 6 wherein said power means comprises: a. a hydraulic piston; and b. a bell crank pivotally secured on said frame and to said hydraulic piston, the ball joint being secured at the outer end of said bell crank.
Claim 9
Dependent Claim
48 words
The apparatus defined in claim 7 wherein the means for connecting the push rod and the linking means comprises a clevis having a pivot pin associated therewith, which pin extends normal to the plane which includes the longitudinal axes of the push rod and of the linking means.
Claim 10
Dependent Claim
48 words
The apparatus defined in claim 8 wherein the means for pivotally securing the bell crank to the hydraulic piston comprises a clevis having associated therewith a pivot pin which extends normal to the plane of motion of the bell crank as the bell crank pivots on said frame.
References Cited (Backward Citations)
US2512380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |