US3668913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for shot-peening turbine blades
Assignee: Metal Improvement Co LLC
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Filing: 1970-10-05
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Granted: 1972-06-13
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Expires: 1990-10-05
Abstract
Abstract A turntable having a number of pairs of apposed resilient gripping members mounted on nested ring members, one of the rings having its axis eccentrically translatable relative to the other, the translatable ring being pressure-biased in one direction transversely to its axis so that the space between the rings is greater at one end of a diameter to allow loading of workpieces between gripping members, the space closing with rotation of the rings to provide a firm grip of the workpieces passing through a subsequent peening zone, a portion of each workpiece being exposed to peening action and a portion shielded therefrom.
Inventors
- 👤 John W Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:27
CPC Classifications
B; B24; B24C; B24C9/00; B23; B23Q; B23Q7/00; B23Q7/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
144 words
Apparatus for shot-peening workpieces, comprising in combination a turntable having an outer barrel rotatable on a vertical axis, an inner barrel coaxial and rotatable therewith, the two barrels defining an annular space therebetween, a ring member disposed between the two barrels and having an axis parallel to but displaced from the barrel axis, the ring being rotatable on its own axis and keyed to one of the barrels for rotation thereby, a plurality of pairs of opposed gripping members mounted respectively on the ring and one of the barrels, each pair of gripping members being adapted to hold a workpiece therebetween, one side of the turntable comprising a loading station where the spacing between members of a pair of gripping members is greatest to allow positioning of a workpiece therebetween, such spacing progressively diminishing with rotation of the turntable to the side diametrally opposite.
Claim 2
Dependent Claim
144 words
Apparatus for shot-peening workpieces, comprising in combination a turntable having an outer barrel rotatable on a vertical axis, an inner barrel coaxial and rotatable therewith, the two barrels defining an annular space therebetween, a ring member disposed between the two barrels and having an axis parallel to but displaced from the barrel axis, the ring being rotatable on its own axis and keyed to one of the barrels for rotation thereby, a plurality of pairs of opposed gripping members mounted respectively on the ring and one of the barrels, each pair of gripping members being adapted to hold a workpiece therebetween, one side of the turntable comprising a loading station where the spacing between members of a pair of gripping members is greatest to allow positioning of a workpiece therebetween, such spacing progressively diminishing with rotation of the turntable to the side diametrally opposite.
Claim 3
Dependent Claim
35 words
The combination recited in claim 1, wherein at least one shot-peening nozzle is disposed at a position circumferentially removed from the loading station, and the workpieces are rotated through the discharge zone of the nozzle.
Claim 4
Dependent Claim
32 words
The combination recited in claim 2, wherein the axis of the ring member is maintained displaced toward the loading station by pressure against the ring from the direction opposite the loading station.
Claim 5
Dependent Claim
59 words
The combination recited in claim 3, wherein the pressure is adjustably applied by a pair of idler rollers bearing against the ring, each of the rollers being mounted on a pivotable arm extending toward the ring, the arms being connected by extensible means to govern the spacing therebetween and thereby vary the pressure of the rollers against the ring.
Claim 6
Dependent Claim
40 words
The combination recited in claim 4, wherein the gripping members are formed of resilient material, the mating members of each pair being mounted respectively on the outer circumference of the inner barrel and on the inner circumference of the ring.
Claim 7
Dependent Claim
55 words
The combination recited in claim 5, wherein the gripping members are positioned at the top of the turntable to hold a workpiece with the portion to be shot-peened protruding above the gripping members and the remainder of the workpiece disposed in the annular space between the barrels and shielded by the barrels from peening material.
Claim 8
Dependent Claim
47 words
The combination recited in claim 4, wherein yoke members extend radially inwardly from the wall of the outer barrel, and fingers extend radially outwardly from the ring, the fingers being slidably positioned in the yoke members to key the ring to the outer barrel for rotation thereby.
References Cited (Backward Citations)
US3270464A
Cited
US3438229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |