US3952980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Translatory shock absorber for attitude sensors
Assignee: National Aeronautics and Space Administration
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Filing: 1974-10-29
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Granted: 1976-04-27
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Expires: 1994-10-29
Abstract
Abstract A translatory shock absorber is provided for mounting an attitude sensor thereon for isolating a sensor from translatory vibrations. The translatory shock absorber includes a hollow block structure formed as one piece to form a parallelogram. The absorber block structure includes a movable top plate for supporting the attitude sensor and a fixed base plate with opposed side plates interposed therebetween. At the junctions of the side plates, and the base and top plates, there are provided machined-out grooves which act as flexible hinges for attenuating translatory vibrations. A damping material is supported on a pedestal which is carried on the base plate between the side plates thereof. The top of the damping material rests against the bottom surface of the top plate for eliminating the resonant peaks of vibration.
Inventors
- 👤 George L. VON Pragenau
- 👤 Irvin T. Morgan, Jr.
- 👤 Clifton A. Kirby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:12
CPC Classifications
G; G12; G12B; G12B3/00; G12B3/04; F; F16; F16F; F16F1/00; F16F1/36; G12B9/00; G12B9/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
339 words
A three-dimensional translatory shock absorber device for mounting a precision instrument or the like for reducing translatory vibrations or motion along each of the three axes defined by a cartesian-coordinate system comprising; a first L-shaped base member having a horizontal planar leg normal to the Z-axis direction and a shorter vertical planar leg normal to the X-axis direction; a second L-shaped member spaced above said first base member and having a horizontal planar leg and a shorter vertical planar leg is parallel alignment with said first L-shaped base member; a first translatory shock absorber device interposed between said vertical planar legs of said first L-shaped base member and said second L-shaped member for reducing translatory vibrations in the direction of the Z-axis; a cushioning spacer interposed between said horizontal planar legs of said first L-shaped base member and said second L-shaped member; a second translatory shock absorber device mounted upon the top surface of said horizontal planar leg of said second L-shaped member for reducing translatory vibrations in the direction of the X-axis; a third translatory shock absorber device mounted on the top plate of said second translatory shock absorber device for reducing translatory vibrations in the direction of the Y-axis; each of said translatory shock absorber devices comprising a first pair of spaced parallel plates and a second pair of spaced parallel plates interposed between said first pair of plates and being integral therewith; laterally extending grooves provided in said second pair of plates at the junctions between said first and second pair of plates; damping means interposed between said first pair of plates for limiting movement of said first pair of plates relative to each other; said precision instrument mounted on the top plate of said third translatory shock absorber device; whereby said grooves provide a flexible joint between said first and second pair of plates and whereby said combination of translatory shock absorber devices effectively isolates said precision instrument from translatory vibration along each axis of motion without introducing rotational effects through said shock absorber devices.
Claim 2
Dependent Claim
339 words
A three-dimensional translatory shock absorber device for mounting a precision instrument or the like for reducing translatory vibrations or motion along each of the three axes defined by a cartesian-coordinate system comprising; a first L-shaped base member having a horizontal planar leg normal to the Z-axis direction and a shorter vertical planar leg normal to the X-axis direction; a second L-shaped member spaced above said first base member and having a horizontal planar leg and a shorter vertical planar leg is parallel alignment with said first L-shaped base member; a first translatory shock absorber device interposed between said vertical planar legs of said first L-shaped base member and said second L-shaped member for reducing translatory vibrations in the direction of the Z-axis; a cushioning spacer interposed between said horizontal planar legs of said first L-shaped base member and said second L-shaped member; a second translatory shock absorber device mounted upon the top surface of said horizontal planar leg of said second L-shaped member for reducing translatory vibrations in the direction of the X-axis; a third translatory shock absorber device mounted on the top plate of said second translatory shock absorber device for reducing translatory vibrations in the direction of the Y-axis; each of said translatory shock absorber devices comprising a first pair of spaced parallel plates and a second pair of spaced parallel plates interposed between said first pair of plates and being integral therewith; laterally extending grooves provided in said second pair of plates at the junctions between said first and second pair of plates; damping means interposed between said first pair of plates for limiting movement of said first pair of plates relative to each other; said precision instrument mounted on the top plate of said third translatory shock absorber device; whereby said grooves provide a flexible joint between said first and second pair of plates and whereby said combination of translatory shock absorber devices effectively isolates said precision instrument from translatory vibration along each axis of motion without introducing rotational effects through said shock absorber devices.
References Cited (Backward Citations)
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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) | 1979-04-27 | 1979-10-27 | 1980-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-27 | 1983-10-27 | 1984-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-27 | 1987-10-27 | 1988-04-27 | $7700.00 | Window Closed / Lapsed |