US3937268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for bonding a bronze bushing on a metallic member
Assignee: Caterpillar Inc
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Filing: 1974-08-05
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Granted: 1976-02-10
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Expires: 1994-08-05
Abstract
Abstract An annular bronze bearing is bonded to a cylindrical inner surface of a metallic member by positioning the member in a fixture to define an annular chamber therein, communicating a charge of bronze alloy particles to the chamber via an open end thereof, melting the alloy and cooling the member and alloy to form the bearing. The apparatus comprises a pair of plates adapted to clamp the metallic member therebetween to define the annular chamber between the member and a cylindrical core. A ceramic funnel is secured on the upper one of the plates to communicate the melted bronze alloy particles to the annular chamber via the open end thereof.
Inventors
- 👤 Richard G. Loebs
- 👤 Richard C. Ostrowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:08
CPC Classifications
B; B22; B22D; B22D19/00; B22D19/08; B22D19/085; Y; Y10; Y10S; Y10S164/00; Y10S164/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
127 words
A method for bonding an annular bearing on a cylindrical surface of a metallic member comprising the steps of positioning said metallic member in a fixture to define an annular chamber closed at a first end and open at a second end thereof, placing a charge of a metallic bearing alloy in particle form adjacent to and in communication with the open end of said annular chamber in a predetermined quantity sufficient to at least substantially fill said chamber, melting said bearing alloy and at least substantially filling said annular chamber therewith by gravity flow, and cooling said metallic member and said melted bearing alloy to ambient temperature to form a solidified annular bearing, conforming to the shape of said annular chamber, bonded to said metallic member.
Claim 2
Independent Claim
127 words
A method for bonding an annular bearing on a cylindrical surface of a metallic member comprising the steps of positioning said metallic member in a fixture to define an annular chamber closed at a first end and open at a second end thereof, placing a charge of a metallic bearing alloy in particle form adjacent to and in communication with the open end of said annular chamber in a predetermined quantity sufficient to at least substantially fill said chamber, melting said bearing alloy and at least substantially filling said annular chamber therewith by gravity flow, and cooling said metallic member and said melted bearing alloy to ambient temperature to form a solidified annular bearing, conforming to the shape of said annular chamber, bonded to said metallic member.
Claim 3
Dependent Claim
31 words
The method of claim 1 wherein said placing step comprises the step of funneling particles of a bronze bearing alloy to a position adjacent the open end of said annular chamber.
Claim 4
Dependent Claim
22 words
The method of claim 1 wherein said positioning step comprises the step of clamping said metallic member between a pair of plates.
Claim 5
Dependent Claim
31 words
The method of claim 1 wherein said positioning step further comprises placing said metallic member in circumventing relationship with respect to an annular non-metallic core to define said annular chamber therebetween.
Claim 6
Dependent Claim
35 words
The method of claim 4 wherein said positioning step further comprises the step of defining said annular chamber between an inner cylindrical surface of said metallic member and an outer cylindrical surface of said core.
Claim 7
Dependent Claim
27 words
The method of claim 4 wherein said positioning step further comprises mounting said metallic member on an annular non-metallic member defining a closed end of said chamber.
Claim 8
Dependent Claim
28 words
The method of claim 1 further comprising the step of subjecting said metallic member to a non-oxidizing, protective atmosphere during melting and bonding of said bearing alloy thereto.
Claim 9
Dependent Claim
24 words
The method of claim 1 wherein said melting step comprises subjecting said metallic member and bearing alloy to a temperature approximating at least 1950°F.
References Cited (Backward Citations)
US2234904A
Cited
US1494099A
Cited
US1944461A
Cited
US1998516A
Cited
US2066247A
Cited
US2222525A
Cited
US3888295A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-09 | 1979-08-11 | 1980-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-09 | 1983-08-11 | 1984-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-09 | 1987-08-11 | 1988-02-10 | $7700.00 | Window Closed / Lapsed |