US3278997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making a onepiece core for casting bladed wheels
Assignee: Rockwell-Standard Corp
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Filing: 1964-10-26
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Granted: 1966-10-18
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Expires: 1984-10-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Carl N Schrader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:56
CPC Classifications
B; B22; B22C; B22C9/00; B22C9/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
110 words
THE METHOD OF MAKING AN INTEGRAL ONE-PIECE CORE FOR CASTING BLADED WHEELS OF COMPLEX BLADE SHAPE COMPRISING THE STEPS OF FIXEDLY MOUNTING A SPACED SERIES OF SHAPED INDIVIDUAL RIGID BLADE PATTERNS IN AN ANNNULAR ROW WITHIN A CORE BOX CAVITY WITH THE INNER AND OUTER SURFACES OF SAID BLADE PATTERNS IN FULL SURFACE FLUIDTIGHT SEALING ENGAGEMENT WITH CORRESPONDING INTERIOR SURFACES ON SAID CORE BOX, BLOWING FLUENT CORE MATERAIL INTO SAID CAVITY WHERE IT IS DISTRIBUTED AROUND THE SIDES OF SAID BLADE PATTERNS AND FILLS THE CAVITY, SOLIDIFYING THE CORE MATERIAL IN SAID CAVITY TO FORM A SELF-SUPPORTING ANNULUS, AND REMOVING SAID BALDE PATTERNS LATERALLY THROUGH ONE SIDE OF SAID ANNULUS.
Claim 2
Independent Claim
110 words
THE METHOD OF MAKING AN INTEGRAL ONE-PIECE CORE FOR CASTING BLADED WHEELS OF COMPLEX BLADE SHAPE COMPRISING THE STEPS OF FIXEDLY MOUNTING A SPACED SERIES OF SHAPED INDIVIDUAL RIGID BLADE PATTERNS IN AN ANNNULAR ROW WITHIN A CORE BOX CAVITY WITH THE INNER AND OUTER SURFACES OF SAID BLADE PATTERNS IN FULL SURFACE FLUIDTIGHT SEALING ENGAGEMENT WITH CORRESPONDING INTERIOR SURFACES ON SAID CORE BOX, BLOWING FLUENT CORE MATERAIL INTO SAID CAVITY WHERE IT IS DISTRIBUTED AROUND THE SIDES OF SAID BLADE PATTERNS AND FILLS THE CAVITY, SOLIDIFYING THE CORE MATERIAL IN SAID CAVITY TO FORM A SELF-SUPPORTING ANNULUS, AND REMOVING SAID BALDE PATTERNS LATERALLY THROUGH ONE SIDE OF SAID ANNULUS.
Claim 3
Dependent Claim
110 words
APPARATUS FOR MAKING A ONE-PIECE CORE FOR CASTING BLADED WHEELS OF COMPLEX BLADE SHAPE COMPRISING SEPARABLE CORE BOX PARTS ENCLOSING A CAVITY, MEANS IN SAID CAVITY FOR MOUTING A SPACED SERIES OF SHAPED RIGID BLADE PATTERNS IN AN ANNULAR ROW BETEWEEN THE CORE BOX PARTS WITH THE INNER AND OUTER SURFACES OF SAID BLADE PATTERNS IN FULL SURFACE ENGAGEMENT WITH CORRESPONDING SURFACES ON SAID CORE BOX, PARTS, MEANS FOR BLOWING FLUENT CORE MATERIAL INTO SAID CAVITY TO ENTIRELY FILL SAID CAVITY AROUND THE SIDES OF SAID BLADE PATTERNS, AND MEANS AT SAID SURFACE FORMING A FLUIDTIGHT SEAL PREVENTING ANY OF SAID BLOWN MATERIAL FROM ENTERING THE SPACES BETWEEN SAID SURFACES.
Claim 4
Dependent Claim
110 words
APPARATUS FOR MAKING A ONE-PIECE CORE FOR CASTING BLADED WHEELS OF COMPLEX BLADE SHAPE COMPRISING SEPARABLE CORE BOX PARTS ENCLOSING A CAVITY, MEANS IN SAID CAVITY FOR MOUTING A SPACED SERIES OF SHAPED RIGID BLADE PATTERNS IN AN ANNULAR ROW BETEWEEN THE CORE BOX PARTS WITH THE INNER AND OUTER SURFACES OF SAID BLADE PATTERNS IN FULL SURFACE ENGAGEMENT WITH CORRESPONDING SURFACES ON SAID CORE BOX, PARTS, MEANS FOR BLOWING FLUENT CORE MATERIAL INTO SAID CAVITY TO ENTIRELY FILL SAID CAVITY AROUND THE SIDES OF SAID BLADE PATTERNS, AND MEANS AT SAID SURFACE FORMING A FLUIDTIGHT SEAL PREVENTING ANY OF SAID BLOWN MATERIAL FROM ENTERING THE SPACES BETWEEN SAID SURFACES.
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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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |