US4606691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beam bending compensation
Assignee: Individual
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Filing: 1983-04-30
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Granted: 1986-08-19
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Expires: 2003-04-30
Abstract
Abstract A system designed to reduce cantilever beam deflections is disclosed. Beam deflection is reduced by neutralizing the force causing such deflection. The neutralizing force is achieved by employing a second cantilever beam parallel with the first and connecting the distal ends of the two beams through an active positioning system. In operation, a force applied to the end of the reference beam, in any direction perpendicular to the length of the beam, is in effect, automatically transferred to the second beam. Thus the second beam bends by an amount proportional to the magnitude of the force, while the reference beams remains in the original position. The end result is a beam whose distal end is located in a unique position relative to the proximal end regardless of any disturbance forces acting upon it.
Inventors
- 👤 Alex Zalucky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:43
CPC Classifications
B; B25; B25J; B25J18/00; B25J18/002; B25J9/00; B25J9/16; B25J9/1679; B25J9/1692
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
141 words
In an apparatus comprising an elongate mechanical member, said member exposed to mechanical load, a means for neutralizing load-induced deformation of said elongate mechanical member, said means comprising a correction means adapted to exert a force on said elongate mechanical member effective to offset said deformation; wherein said correction means comprises a further mechanical member movably coupled to said elongate mechanical member; wherein said correction means comprises a coupling means connected between said elongate mechanical member and said further mechanical member for transmitting said force from said further mechanical member to said elongate mechanical member, a detector means connected between said elongate mechanical member and said further mechanical member for determining the magnitude and direction of said deformation of said elongate mechanical member, and a feedback means for causing said correction means to exert said force on said elongate mechanical member.
Claim 2
Dependent Claim
141 words
In an apparatus comprising an elongate mechanical member, said member exposed to mechanical load, a means for neutralizing load-induced deformation of said elongate mechanical member, said means comprising a correction means adapted to exert a force on said elongate mechanical member effective to offset said deformation; wherein said correction means comprises a further mechanical member movably coupled to said elongate mechanical member; wherein said correction means comprises a coupling means connected between said elongate mechanical member and said further mechanical member for transmitting said force from said further mechanical member to said elongate mechanical member, a detector means connected between said elongate mechanical member and said further mechanical member for determining the magnitude and direction of said deformation of said elongate mechanical member, and a feedback means for causing said correction means to exert said force on said elongate mechanical member.
Claim 3
Dependent Claim
146 words
In a robot apparatus, the apparatus comprising at least one elongate mechanical member, said member exposed to mechanical load, a means for neutralizing load-induced deformation of said elongate mechanical member, said means comprising a correction means adapted to exert a force on said elongate mechanical member effective to offset said deformation; wherein said correction means comprises a further mechanical member movably coupled to said elongate mechanical member; wherein said correction means comprises a coupling means connected between said elongate mechanical member and said further mechanical member for transmitting said force from said further mechanical member to said elongate mechanical member, a detector means connected between said elongate mechanical member and said further mechanical member for determining the magnitude and direction of said deformation of said elongate mechanical member, and a feedback means for causing said correction means to exert said force on said elongate mechanical member.
Claim 4
Dependent Claim
146 words
In a robot apparatus, the apparatus comprising at least one elongate mechanical member, said member exposed to mechanical load, a means for neutralizing load-induced deformation of said elongate mechanical member, said means comprising a correction means adapted to exert a force on said elongate mechanical member effective to offset said deformation; wherein said correction means comprises a further mechanical member movably coupled to said elongate mechanical member; wherein said correction means comprises a coupling means connected between said elongate mechanical member and said further mechanical member for transmitting said force from said further mechanical member to said elongate mechanical member, a detector means connected between said elongate mechanical member and said further mechanical member for determining the magnitude and direction of said deformation of said elongate mechanical member, and a feedback means for causing said correction means to exert said force on said elongate mechanical member.
Claim 5
Dependent Claim
51 words
The apparatus of claim 1 or 2, wherein the detector means comprises a photodetector located on one end of said elongate mechanical member, and a light on the other end, said photodetector and light cooperating to provide an electrical signal to said feedback means substantially proportional to said load induced deformation.
Claim 6
Dependent Claim
66 words
The apparatus of claim 1 or 2, wherein said coupling means comprises a first means attached to said elongate mechanical member, a second means attached to said further mechanical member, and said correction means comprises a servo-controlled positioning system, said first and second means being effective to cause said correction means to exert said force responsive to the operation of said system responsive to said detector.
Claim 7
Dependent Claim
15 words
The apparatus of claim 4, wherein said servo-controlled positioning system is a servo-controlled fluid system.
Claim 8
Dependent Claim
56 words
The apparatus of claim 5 wherein said elongate mechanical member is free to undergo said deformation through plural degrees of freedom of movement, and said correction means comprises more than one coupling means, each said more than one coupling means arranged effective to neutralize said deformation in each of said plural degrees of freedom of movement.
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) | 1989-08-18 | 1990-02-17 | 1990-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-18 | 1994-02-17 | 1994-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-18 | 1998-02-17 | 1998-08-19 | $7700.00 | Window Closed / Lapsed |