US4876524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Six-axis joystick control
Assignee: Individual
•
Filing: 1988-06-20
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Granted: 1989-10-24
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Expires: 2008-06-20
Abstract
Abstract An isometric control device or the like of the type having an elastic beam and strain guages attached to the surface of the beam characterized by at least a first group of three strain guages (D, F, G) each having an operative axis thereof inclined with a single predetermined angle with respect to the main axis (z) of said beam (10), and the strain gauges disposed at a first predetermined level along said beam (10).
Inventors
- 👤 Richard L. Jenkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:37
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/20; G01L1/22; G01L1/225; G01L5/00; G01L5/16; G01L5/161; G01L5/1627; G01L5/22; G01L5/223
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
62 words
A control device comprising: an elastic beam; strain gauges attached to the surface of said beam; a first group of not more than three of said strain gauges each having an operative axis thereof inclined with a single predetermined angle with respect to the main axis of said beam, said strain gauges being disposed at a first predetermined level along said beam.
Claim 2
Dependent Claim
62 words
A control device comprising: an elastic beam; strain gauges attached to the surface of said beam; a first group of not more than three of said strain gauges each having an operative axis thereof inclined with a single predetermined angle with respect to the main axis of said beam, said strain gauges being disposed at a first predetermined level along said beam.
Claim 3
Independent Claim
37 words
A device comprising: an elastic beam; strain gauges attached to the surface of said beam; first and second groups of at least three said strain gauges disposed at first and second predetermined levels along said beam, respectively.
Claim 4
Independent Claim
37 words
A device comprising: an elastic beam; strain gauges attached to the surface of said beam; first and second groups of at least three said strain gauges disposed at first and second predetermined levels along said beam, respectively.
Claim 5
Independent Claim
50 words
A device comprising: an elastic beam; strain gauges attached to the surface of said beam; first, second and third groups of strain gauges being disposed, at first, second and third predetermined levels along said beam, respectively, to measure bending forces in said beam at said first, second, and third levels.
Claim 6
Independent Claim
50 words
A device comprising: an elastic beam; strain gauges attached to the surface of said beam; first, second and third groups of strain gauges being disposed, at first, second and third predetermined levels along said beam, respectively, to measure bending forces in said beam at said first, second, and third levels.
Claim 7
Dependent Claim
56 words
The isometric control device as defined in claim 2, said first and second groups of strain gauges each comprising three strain gauges each having an operative axis thereof inclined, the first group with a first predetermined angle and the second group with a second predetermined angle, with respect to the main axis (z) of said beam.
Claim 8
Dependent Claim
65 words
The isometric control device as defined in claim 3, said first, second and third groups of strain gauges each comprising three strain gauges each having an operative axis thereof inclined, the first group with a first predetermined angle, the second group with a second predetermined angle and the third group with a third predetermined angle, with respect to the main axis (z) of said beam.
Claim 9
Dependent Claim
78 words
A control device comprising: an elastic beam; strain gauges attached to the surface of said beam; at least a first group of three of said strain gauges each having an operative axis thereof inclined with a single predetermined angle with respect to the main axis of said beam, said strain gauges being disposed at a first predetermined level along said beam, said single predetermined angle being less than cotan -1 of the Poisson ratio of the beam angle.
Claim 10
Dependent Claim
78 words
A control device comprising: an elastic beam; strain gauges attached to the surface of said beam; at least a first group of three of said strain gauges each having an operative axis thereof inclined with a single predetermined angle with respect to the main axis of said beam, said strain gauges being disposed at a first predetermined level along said beam, said single predetermined angle being less than cotan -1 of the Poisson ratio of the beam angle.
Claim 11
Dependent Claim
37 words
The isometric device as defined in claim 4, said first and second predetermined angles being opposite in direction and equal in magnitude, which is less than cotan -1 of the Poisson ratio of the elastic beam material.
Claim 12
Dependent Claim
38 words
The isometric device as defined in claim 5, said first and second predetermined angles being opposite in direction and equal in magnitude, which is less than cotan -1 of the Poisson ratio magnitude of the elastic beam material.
Claim 13
Dependent Claim
15 words
The isometric device as defined in claim 8, said third predetermined angle being ninety degrees.
Claim 14
Dependent Claim
23 words
The isometric device as defined in claim 1, said single predetermined angle having a magnitude selected between zero degrees and forty five degrees.
Claim 15
Dependent Claim
32 words
The isometric device as defined in claims 4 or 5, said first and second predetermined angles having a magnitude selected between zero degrees and forty five degrees, and being opposite in direction.
Claim 16
Dependent Claim
31 words
The isometric device as defined in claim 1, 2 or 3, further CHARACTERIZED BY having all strain gauge generated signals processed by a single electronic circuit by means of sequential sampling.
Claim 17
Dependent Claim
31 words
The isometric device as defined in claims 4, 5 or 6, further CHARACTERIZED BY having all strain gauge generated signals processed by a single electronic circuit by means of sequential sampling.
Claim 18
Dependent Claim
31 words
The isometric device as defined in claim 7, 8 or 9, further CHARACTERIZED BY having all strain gauge generated signals processed by a single electronic circuit by means of sequential sampling.
Claim 19
Dependent Claim
28 words
The isometric device as defined in claim 10, further CHARACTERIZED BY having all strain gauge generated signals processed by a single electronic circuit by means of sequential sampling.
Claim 20
Dependent Claim
75 words
A control device comprising: an elastic beam; strain gauges attached to the surface of said beam; at least a first group of three of said strain gauges each having an operative axis thereof inclined with a single predetermined angle with respect to the main axis of said beam, said strain gauges being disposed at a first predetermined level along said beam, said three strain gauges being symmetrically disposed on said beam about said main axis.
Claim 21
Dependent Claim
75 words
A control device comprising: an elastic beam; strain gauges attached to the surface of said beam; at least a first group of three of said strain gauges each having an operative axis thereof inclined with a single predetermined angle with respect to the main axis of said beam, said strain gauges being disposed at a first predetermined level along said beam, said three strain gauges being symmetrically disposed on said beam about said main axis.
Claim 22
Dependent Claim
24 words
The isometric device as defined in claim 4, each three gauges in a group being symmetrically disposed on said beam about said main axis.
Claim 23
Dependent Claim
24 words
The isometric device as defined in claim 5, each three gauges in a group being symmetrically disposed on said beam about said main axis.
Claim 24
Dependent Claim
22 words
The isometric device as defined in claim 6, said three strain gauges being symmetrically disposed on said beam about said main axis.
Claim 25
Dependent Claim
24 words
The isometric device as defined in claim 7, each three gauges in a group being symmetrically disposed on said beam about said main axis.
Claim 26
Dependent Claim
24 words
The isometric device as defined in claim 8, each three gauges in a group being symmetrically disposed on said beam about said main axis.
Claim 27
Dependent Claim
24 words
The isometric device as defined in claim 9, each three gauges in a group being symmetrically disposed on said beam about said main axis.
Claim 28
Dependent Claim
22 words
The isometric device as defined in claim 10, said three strain gauges being symmetrically disposed on said beam about said main axis.
Claim 29
Dependent Claim
26 words
The isometric device as defined in claim 16, 19 or 23, said single predetermined angle having a magnitude selected between zero degrees and forty five degrees.
Claim 30
Dependent Claim
33 words
The isometric device as defined in claims 17, 18 or 20, said first and second predetermined angles having a magnitude selected between zero degrees and forty five degrees, and being opposite in direction.
Claim 31
Dependent Claim
32 words
The isometric device as defined in claims 21 or 22, said first and second predetermined angles having a magnitude selected between zero degrees and forty five degrees, and being opposite in direction.
Claim 32
Dependent Claim
18 words
The control device of claim 1, wherein said first group consists of exactly three of said strain gauges.
Claim 33
Dependent Claim
21 words
The control device of claim 2, wherein said first and second groups each consist of exactly three of said strain gauges.
Claim 34
Dependent Claim
13 words
The device of claim 1, wherein said beam is flexible in two axes.
Claim 35
Dependent Claim
13 words
The device of claim 2, wherein said beam is flexible in two axes.
Claim 36
Dependent Claim
13 words
The device of claim 3, wherein said beam is flexible in two axes.
Claim 37
Dependent Claim
15 words
The device of claim 2, wherein said beam is substantially equally flexible in two axes.
Claim 38
Dependent Claim
15 words
The device of claim 3, wherein said beam is substantially equally flexible in two axes.
Claim 39
Dependent Claim
21 words
The device of claim 2, further comprising a third group of strain gauges disposed at a third level on said beam.
Claim 40
Dependent Claim
26 words
The device of claim 1, wherein each said group of strain gauges is positioned to measure bending forces in said beam at said respective location thereof.
Claim 41
Dependent Claim
26 words
The device of claim 2, wherein each said group of strains gauges is positioned to measure bending forces in said beam at said respective location thereof.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-23 | 1993-04-24 | 1993-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-23 | 1997-04-24 | 1997-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-23 | 2001-04-24 | 2001-10-24 | $7700.00 | Window Closed / Lapsed |