US3597938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexure joint
Assignee: Kearfott Guidance and Navigation Corp
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Filing: 1969-05-21
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Granted: 1971-08-10
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Expires: 1989-05-21
Abstract
Abstract A flexure joint and a method of manufacturing same, in which one or more pairs of slots are formed through the wall of a unitary tubular member, the ends of one slot of each pair terminating a predetermined circumferential distance from the corresponding ends of the other slot of the same pair to form at least two flexure portions.
Inventors
- 👤 James S Hellen
- 👤 John C Stiles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:43
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/005; G; G01; G01C; G01C19/00; G01C19/02; G01C19/04; G01C19/16; G01C19/22; Y; Y10; Y10T; Y10T403/00; Y10T403/54
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
143 words
A flexure joint comprising two telescoped tubular members each having at least one pair of circumferentially extending Ushaped slots formed through the wall thereof, the ends of one slot of each pair terminating a predetermined circumferential distance from the corresponding ends of the other slot of the same pair, the portions of each of said tubular members between said corresponding ends being necked down to form at least two flexure portions, said flexure portions lying in a common plane extending transverse to the axes of said tubular members, wherein the flexure portions of each of said tubular members extend at an angle to the axes of said tubular members, and wherein the longitudinal axes of the flexure portions of one of said tubular members extend at right angles to the longitudinal axes of the flexure portions of the other of said tubular members.
Claim 2
Dependent Claim
143 words
A flexure joint comprising two telescoped tubular members each having at least one pair of circumferentially extending Ushaped slots formed through the wall thereof, the ends of one slot of each pair terminating a predetermined circumferential distance from the corresponding ends of the other slot of the same pair, the portions of each of said tubular members between said corresponding ends being necked down to form at least two flexure portions, said flexure portions lying in a common plane extending transverse to the axes of said tubular members, wherein the flexure portions of each of said tubular members extend at an angle to the axes of said tubular members, and wherein the longitudinal axes of the flexure portions of one of said tubular members extend at right angles to the longitudinal axes of the flexure portions of the other of said tubular members.
Claim 3
Dependent Claim
41 words
The flexure joint of claim 1 wherein a bore is formed in the wall of said tubular member at each end of each of said slots, the adjacent bores being spaced a predetermined amount to form said necked down flexure portions.
Claim 4
Dependent Claim
33 words
The flexure joint of claim 1 wherein the combined arcuate lengths of the slots of each pair along with their corresponding flexure members extend for substantially one circumference of their respective tubular member.
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |