US3818646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fixture for holding precisely shaped parts
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1973-01-12
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Granted: 1974-06-25
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Expires: 1993-01-12
Abstract
Abstract A fixture for holding precisely shaped parts such as blades for jet turbine engines for accurately positioning the parts to enable subsequent grinding or machining operations to be carried out precisely. The fixture includes a base with opposed sidewalls extending therefrom, the sidewalls being spaced to provide a slot of sufficient width to receive the arcuately shaped portions of a turbine blade or the like. Seating means are provided for seating edge portions of the workpiece in the fixture, and a plurality of individually movable pins are positioned to extend from each of the sidewalls into the slot to engage the arcuately shaped portion of the workpiece.
Inventors
- 👤 R Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:42
CPC Classifications
B; B23; B23Q; B23Q3/00; B23Q3/02; B23Q3/06; B23Q3/062; B23Q3/063; B25; B25B; B25B1/00; B25B1/24; B25B1/2405; B25B1/241; B25B1/2415; B25B1/2421; B25B5/00; B25B5/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
126 words
A fixture for holding an airfoil shaped workpiece comprising a fixture base, opposed sidewalls extending from said base, said sidewalls being spaced sufficiently to provide a slot of sufficient width to receive the airfoil portions of said workpiece, abutment means on opposite sides of said slot arranged to abut the top and bottom of said workpiece while said airfoil portion is in said slot, at least one of said abutment means being axially adjustable, a pair of adjustable seating means, one at each of the ends of said sidewalls arranged to seat portions of said airfoil portion therein, and a plurality of individually movable pins extending from each of said sidewalls into said slot to firmly engage thE airfoil portion between said pair of seating means.
Claim 2
Dependent Claim
126 words
A fixture for holding an airfoil shaped workpiece comprising a fixture base, opposed sidewalls extending from said base, said sidewalls being spaced sufficiently to provide a slot of sufficient width to receive the airfoil portions of said workpiece, abutment means on opposite sides of said slot arranged to abut the top and bottom of said workpiece while said airfoil portion is in said slot, at least one of said abutment means being axially adjustable, a pair of adjustable seating means, one at each of the ends of said sidewalls arranged to seat portions of said airfoil portion therein, and a plurality of individually movable pins extending from each of said sidewalls into said slot to firmly engage thE airfoil portion between said pair of seating means.
Claim 3
Dependent Claim
25 words
The fixture of claim 1 in which each of said adjustable seating means is slidably received along the ends of said sidewalls and securable thereto.
Claim 4
Dependent Claim
26 words
The fixture of claim 2 in which said adjustable seating means consists of a notched bar slidable into and out of engagement with said airfoil portion.
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) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |