US3700291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two degree inverted flexure
Assignee: National Aeronautics and Space Administration
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Filing: 1971-10-29
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Granted: 1972-10-24
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Expires: 1991-10-29
Abstract
Abstract An inverted flexure is provided having two degrees of freedom which can be made from a single block of material by simple drilling and sawing operations. The flexural axis of either or both planes can be located either on or off the geometric center of the device.
Inventors
- 👤 Wayne O Hadland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:05
CPC Classifications
F; F16; F16C; F16C11/00; F16C11/04; F16C11/12; Y; Y10; Y10T; Y10T403/00; Y10T403/45; Y10T403/54; Y10T74/00; Y10T74/12; Y10T74/1293
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
138 words
A two axis pivot composed of a single piece of an elastic material having two spaced end members with a base member located between said end members and spaced therefrom, a top member forming a connection between said end members and said base member, said connections consisting of a first pair of thin webs connecting said end members to said top member and a second pair of thin webs connecting said top member to said base member, said first and second webs being at right angles to each other lying on a single plane, whereby a first mechanical connection can be made to said end members and a second mechanical connection can be made to said base member whereby said first and second connections can flex independently on two axes and be held rigid on all other axes.
Claim 2
Dependent Claim
138 words
A two axis pivot composed of a single piece of an elastic material having two spaced end members with a base member located between said end members and spaced therefrom, a top member forming a connection between said end members and said base member, said connections consisting of a first pair of thin webs connecting said end members to said top member and a second pair of thin webs connecting said top member to said base member, said first and second webs being at right angles to each other lying on a single plane, whereby a first mechanical connection can be made to said end members and a second mechanical connection can be made to said base member whereby said first and second connections can flex independently on two axes and be held rigid on all other axes.
Claim 3
Dependent Claim
100 words
The structure of claim 1 wherein two axis pivot is constructed from a single piece of elastic material by forming two holes parallel to the said base member between said base member and said top member leaving a thin web therebetween to provide flexing on one axis and having two similar holes formed at right angles to said first two holes, forming therebetween a thin web for flexure on the second axis and having thin cutout portions on each corner of the device interconnecting adjacent corner holes, said cutouts permitting flexing on the webs and serving to form limit stops.
Claim 4
Dependent Claim
27 words
The structure of claim 1 wherein at least one of said first and second pairs of thin webs is displaced from the geometric axes of the flexure.
Claim 5
Dependent Claim
25 words
The structure of claim 1 wherein both the first pair and the second pair of thin webs lie on the geometric center of the flexure.
Claim 6
Dependent Claim
33 words
The structure of claim 1 wherein said top member has an opening therein, said opening providing a clearance for a mechanical connection extending through said top member and being connected to said base.
Claim 7
Dependent Claim
24 words
The structure of claim 1 wherein mechanical connections are provided extending outwardly from said end members and said base members in the same direction.
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |