US4010965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe joint for connecting different kinds of metallic pipes
Assignee: Asahi Kasei Corp
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Filing: 1975-04-08
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Granted: 1977-03-08
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Expires: 1995-04-08
Abstract
Abstract A pipe joint for connecting an aluminum pipe to a stainless steel pipe, where the joint consists of washer layers of aluminum, titanium, nickel and stainless steel in this order, each being tightly bonded and integrated in the axial direction of the pipe joint into one assembly by explosion bonding.
Inventors
- 👤 Takeshi Izuma
- 👤 Chiyoshi Fukumoto
- 👤 Kazuhiko Yamaura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:07
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/001; B23K35/002; B23K20/00; B23K20/06; B23K20/08; B23K20/085; F; F16; F16L; F16L13/00; F16L13/007; Y; Y10; Y10S; Y10S285/00; Y10S285/904; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9335; Y10S428/94; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12639; Y10T428/12646; Y10T428/12653; Y10T428/12736; Y10T428/12743; Y10T428/12764; Y10T428/12771; Y10T428/12806; Y10T428/12861; Y10T428/12951; Y10T428/12958; Y10T428/12965; Y10T428/12972; Y10T428/12979; Y10T428/12986
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
47 words
A pipe joint for connecting an aluminum pipe to a stainless steel pipe, which comprises washer layers of aluminum, titanium, nickel and stainless steel in this order, each washer layer being welded to the adjacent layers in the axial direction of the pipe joint by explosive bonding.
Claim 2
Dependent Claim
47 words
A pipe joint for connecting an aluminum pipe to a stainless steel pipe, which comprises washer layers of aluminum, titanium, nickel and stainless steel in this order, each washer layer being welded to the adjacent layers in the axial direction of the pipe joint by explosive bonding.
Claim 3
Dependent Claim
23 words
A pipe joint according to claim 1, wherein the aluminum washer layer contains an additional corrosion-resistant aluminum washer layer as an outermost layer.
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) | 1980-03-07 | 1980-09-06 | 1981-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-07 | 1984-09-06 | 1985-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-07 | 1988-09-06 | 1989-03-08 | $7700.00 | Window Closed / Lapsed |