Patent US3736635A successfully refreshed from Google Patents.
US3736635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a ball and socket joint
Assignee: Federal Mogul Engineering Ltd
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Filing: 1971-03-08
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Granted: 1973-06-05
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Expires: 1991-03-08
Abstract
Abstract A method of making a ball and socket joint in which the ball is placed inside two co-axial cylindrical blanks which are then placed in a die which prevents outward expansion of the blanks. Force is then applied to the ends of the blanks to deform them to form the socket with the inner surface of the inner blank forming a bearing surface for the ball.
Inventors
- 👤 H Romer
- 👤 R Beazley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:17
CPC Classifications
F; F16; F16C; F16C11/00; F16C11/04; F16C11/06; F16C11/0614; F16C11/0685; F16C23/00; F16C23/02; F16C23/04; F16C23/043; F16C23/045; F16C43/00; F16C43/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49647; Y10T29/49648; Y10T29/4965; Y10T29/49652; Y10T29/49826; Y10T29/4984; Y10T29/49845; Y10T29/49853
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
154 words
A method of making a ball and socket joint comprising locating a ball in a pair of co-axial cylindrical blanks, the inner blank of the pair having an internal diameter approximately equal to the external diameter of the ball and an external diameter approximately equal to the internal diameter of the outer blank, and the inner blank being axially shorter than the outer blank; locating the ball and the blanks within a die whose internal dimension is approximately equal to the outer dimension of the said outer blank, applying pressure between the ends of the outer blank to deform the blanks to form the socket member by causing the said inner blank to conform with the bearing surface of the ball, and causing the metal of the ends of the outer blank to flow over the ends of the inner blank while the blanks remain in the die thereby retaining the inner blank positively.
Claim 2
Independent Claim
154 words
A method of making a ball and socket joint comprising locating a ball in a pair of co-axial cylindrical blanks, the inner blank of the pair having an internal diameter approximately equal to the external diameter of the ball and an external diameter approximately equal to the internal diameter of the outer blank, and the inner blank being axially shorter than the outer blank; locating the ball and the blanks within a die whose internal dimension is approximately equal to the outer dimension of the said outer blank, applying pressure between the ends of the outer blank to deform the blanks to form the socket member by causing the said inner blank to conform with the bearing surface of the ball, and causing the metal of the ends of the outer blank to flow over the ends of the inner blank while the blanks remain in the die thereby retaining the inner blank positively.
Claim 3
Dependent Claim
43 words
The method as claimed in claim 1 wherein the cylindrical blanks have one or more axial slots therein and working clearance is provided between the ball and the inner blank by placing spacing means between one, or at least one, of the slots.
Claim 4
Dependent Claim
32 words
The method as claimed in claim 1 wherein working clearance is provided between the ball and the inner blank by putting a short-lived material between the ball and inner blank before deformation.
Claim 5
Dependent Claim
43 words
The method as claimed in any of claim 1 wherein working clearance is provided between the ball and the said inner blank after deformation by extending the means circumferential length of the inner blank by rolling the outer surface of the outer blank.
Claim 6
Dependent Claim
45 words
The method as claimed in any of claim 1 in which the cylindrical blanks have one or more slots therein and working clearance is provided between the ball and the inner blank after deformation by indenting the outer blank in the region of the slot.
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 |