Patent US3736638A successfully refreshed from Google Patents.
US3736638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for bonding opposed parts of a hollow article together
Assignee: RTX Corp
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Filing: 1971-04-07
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Granted: 1973-06-05
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Expires: 1991-04-07
Abstract
Abstract Apparatus for and method of bonding together the parts of a two part hollow article having projecting ribs on at least one part engaging cooperating surfaces on the other part and in which a high pressure is applied during the bonding operation to the portions of the parts that are in contact with one another without a corresponding pressure on the remainder of the surfaces of the article.
Inventors
- 👤 H Stone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:30
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/18; F01D5/187; B; B21; B21K; B21K3/00; B21K3/04; B23; B23K; B23K20/00; B23K20/06; B23K20/08; B23P; B23P15/00; B23P15/04; F01D5/147; F05; F05D; F05D2230/00; F05D2230/20; F05D2230/23; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49336; Y10T29/49339
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
163 words
In the bonding together of opposed parts of a hollow article, each of the opposed parts having a plurality of cooperating surfaces spaced from one another to contact similar surfaces on the other part and to be bonded thereto, the steps of: 1. forming each of the parts to the finished configuration on its inner surface, 2. placing said opposed parts together in proper assembled relation, 3. supporting one of said parts by a die having a surface conforming in shape and dimension to said part, 4. applying a backing member to the other part, said backing member having grooves coinciding in configuration to the underlying contacting surfaces on the part, 5. applying fluid pressure to the side of the backing member opposite to the part such that a higher pressure is exerted on said other part in the areas opposite to the cooperating surfaces than on the remainder of the part, and 6. bonding said parts together while said pressure is exerted.
Claim 2
Dependent Claim
163 words
In the bonding together of opposed parts of a hollow article, each of the opposed parts having a plurality of cooperating surfaces spaced from one another to contact similar surfaces on the other part and to be bonded thereto, the steps of: 1. forming each of the parts to the finished configuration on its inner surface, 2. placing said opposed parts together in proper assembled relation, 3. supporting one of said parts by a die having a surface conforming in shape and dimension to said part, 4. applying a backing member to the other part, said backing member having grooves coinciding in configuration to the underlying contacting surfaces on the part, 5. applying fluid pressure to the side of the backing member opposite to the part such that a higher pressure is exerted on said other part in the areas opposite to the cooperating surfaces than on the remainder of the part, and 6. bonding said parts together while said pressure is exerted.
Claim 3
Dependent Claim
9 words
placing said opposed parts together in proper assembled relation,
Claim 4
Dependent Claim
9 words
placing said opposed parts together in proper assembled relation,
Claim 5
Dependent Claim
20 words
The method of claim 1 in which the backing member is of a substantial uniform thickness except for the grooves.
Claim 6
Dependent Claim
22 words
The method of claim 1 with the added step of applying a uniform fluid pressure to the surface of the backing member.
Claim 7
Dependent Claim
19 words
supporting one of said parts by a die having a surface conforming in shape and dimension to said part,
Claim 8
Dependent Claim
19 words
supporting one of said parts by a die having a surface conforming in shape and dimension to said part,
Claim 9
Dependent Claim
24 words
applying a backing member to the other part, said backing member having grooves coinciding in configuration to the underlying contacting surfaces on the part,
Claim 10
Dependent Claim
24 words
applying a backing member to the other part, said backing member having grooves coinciding in configuration to the underlying contacting surfaces on the part,
Claim 11
Dependent Claim
54 words
The method of claim 1 in which the hollow article is a compressor or turbine blade with the added steps of: conforming said die and said backing member in shape to the opposite surfaces of the blade and, forming said contacting surfaces on ribs on at least one of the halves of the blade.
Claim 12
Dependent Claim
41 words
applying fluid pressure to the side of the backing member opposite to the part such that a higher pressure is exerted on said other part in the areas opposite to the cooperating surfaces than on the remainder of the part, and
Claim 13
Dependent Claim
41 words
applying fluid pressure to the side of the backing member opposite to the part such that a higher pressure is exerted on said other part in the areas opposite to the cooperating surfaces than on the remainder of the part, and
Claim 14
Dependent Claim
9 words
bonding said parts together while said pressure is exerted.
Claim 15
Dependent Claim
9 words
bonding said parts together while said pressure is exerted.
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) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |