US3752421A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear-pivotal converter
Assignee: Individual
•
Filing: 1972-05-30
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Granted: 1973-08-14
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Expires: 1992-05-30
Abstract
Abstract A device for converting reversible linear motion to reversible pivotal motion wherein the member undergoing pivotal motion is locked against motion at both limits thereof.
Inventors
- 👤 W Harvey
- 👤 R Violett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:37
CPC Classifications
B; B64; B64C; B64C25/00; B64C25/02; B64C25/08; B64C25/10; B64C25/18; B64C25/26; B64C25/20; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
114 words
A linear-pivotal motion converter comprising, in combination, a housing having side and end walls; one of said walls being Lshaped and having stops for the legs of a cam; an L-shaped cam rotatably mounted in the side walls of said housing; a member fixed to said cam for pivotal movement therewith; an actuator rod mounted for reversible linear motion in said end walls adjacent said cam; a shuttle fixed to said actuator rod and positioned between the legs of said cam for alternate engagement therewith; and means for effecting reversible linear movement of said rod and said shuttle to engage the legs of said cam and effect pivotal movement thereof and of said member.
Claim 2
Dependent Claim
114 words
A linear-pivotal motion converter comprising, in combination, a housing having side and end walls; one of said walls being Lshaped and having stops for the legs of a cam; an L-shaped cam rotatably mounted in the side walls of said housing; a member fixed to said cam for pivotal movement therewith; an actuator rod mounted for reversible linear motion in said end walls adjacent said cam; a shuttle fixed to said actuator rod and positioned between the legs of said cam for alternate engagement therewith; and means for effecting reversible linear movement of said rod and said shuttle to engage the legs of said cam and effect pivotal movement thereof and of said member.
Claim 3
Dependent Claim
35 words
The combination recited in claim 1 wherein said shuttle moves one of said cam legs against one of said stops in either limit of pivotal movement to lock said cam and said member against movement.
Claim 4
Dependent Claim
26 words
The combination recited in claim 2 wherein said cam legs are unlocked when said shuttle is in a position intermediate the end walls of said housing.
Claim 5
Dependent Claim
17 words
The combination recited in claim 1 wherein said cam legs are bifurcated to accommodate said actuator rod.
Claim 6
Dependent Claim
42 words
The combination recited in claim 1 wherein said housing is mounted on an aircraft, said member pivots downwardly to a substantially vertical position, and a wheel is mounted on the outer end of said member to function as an aircraft landing wheel.
Claim 7
Dependent Claim
31 words
The combination recited in claim 5 wherein a spring connects said cam and said housing to assist in the reverse pivoting of said landing wheel to a position within the aircraft.
Claim 8
Dependent Claim
22 words
The combination recited in claim 1 wherein said housing is provided with a cover to act as a guide for said shuttle.
Claim 9
Dependent Claim
42 words
The combination recited in claim 2 wherein said housing is mounted on an aircraft, said member pivots downwardly to a substantially vertical position, and a wheel is mounted on the outer end of said member to function as an aircraft landing wheel.
Claim 10
Dependent Claim
31 words
The combination recited in claim 8 wherein a spring connects said cam and said housing to assist in the reverse pivoting of said landing wheel to a position within the aircraft.
Claim 11
Dependent Claim
22 words
The combination recited in claim 2 wherein said housing is provide with a cover to act as a guide for said shuttle.
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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |