Patent US3853258A successfully refreshed from Google Patents.
US3853258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flash removal apparatus for a friction welding operation
Assignee: Textron Inc
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Filing: 1972-07-17
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Granted: 1974-12-10
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Expires: 1992-07-17
Abstract
Abstract The present disclosure is to a workpiece holder and positioner which is adapted to automatically remove the flash produced during friction welding operation on said workpiece. More specifically, it pertains to apparatus which controls the flash formation to ensure proper automatic removal thereof as part of the friction welding and workpiece removal procedure.
Inventors
- 👤 J Louw
- 👤 R Ghiselin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:50
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/12; Y; Y10; Y10T; Y10T409/00; Y10T409/50; Y10T409/501476; Y10T409/50164; Y10T409/501804
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
165 words
In a friction welding apparatus for friction welding a first workpiece to a second workpiece to form a unitary structure: a first workpiece holder formed to receive a first workpieCe; said first workpiece holder having a flash controlling surface and a shearing edge adjacent to said first workpiece; means forming a shoulder on said first workpiece holder; a holding member adapted to hold a portion of said first workpiece against said shoulder; a second workpiece holder adapted to receive a second workpiece; said second workpiece holder having a second flash controlling surface for cooperation with said first flash controlling surface to form a cavity for the flash resulting from said frictional welding operation; and means including an ejection plunger for ejecting said unitary structure from said workpiece holders; said ejection plunger being adapted to move said structure and said flash in such a direction as to cause said shearing edge to shear off said flash as said structure is ejected from said first workpiece holder.
Claim 2
Dependent Claim
165 words
In a friction welding apparatus for friction welding a first workpiece to a second workpiece to form a unitary structure: a first workpiece holder formed to receive a first workpieCe; said first workpiece holder having a flash controlling surface and a shearing edge adjacent to said first workpiece; means forming a shoulder on said first workpiece holder; a holding member adapted to hold a portion of said first workpiece against said shoulder; a second workpiece holder adapted to receive a second workpiece; said second workpiece holder having a second flash controlling surface for cooperation with said first flash controlling surface to form a cavity for the flash resulting from said frictional welding operation; and means including an ejection plunger for ejecting said unitary structure from said workpiece holders; said ejection plunger being adapted to move said structure and said flash in such a direction as to cause said shearing edge to shear off said flash as said structure is ejected from said first workpiece holder.
Claim 3
Dependent Claim
177 words
In a friction welding apparatus for friction welding a first workpiece to a second workpiece to form a unitary structure: a first workpiece holder formed with an opening adapted to receive a first workpiece; said first workpiece holder having a flash controlling surface and a shearing edge adjacent to said first workpiece; means forming a shoulder on said first workpiece holder at one end of the opening therein; a holding ram adapted to hold a portion of said first workpiece against said shoulder; a second workpiece holder adapted to receive a second workpiece; said second workpiece holder having a second flash controlling surface for cooperation with said first flash controlling surface to form an annular cavity for the flash resulting from said frictional welding operation; and means including an ejection plunger for ejecting said unitary structure from said workpiece holders; said ejection plunger being adapted to move said structure and said flash in such a direction as to cause said shearing edge to shear off said flash as said structure is ejected from said first workpiece holder.
Claim 4
Dependent Claim
177 words
In a friction welding apparatus for friction welding a first workpiece to a second workpiece to form a unitary structure: a first workpiece holder formed with an opening adapted to receive a first workpiece; said first workpiece holder having a flash controlling surface and a shearing edge adjacent to said first workpiece; means forming a shoulder on said first workpiece holder at one end of the opening therein; a holding ram adapted to hold a portion of said first workpiece against said shoulder; a second workpiece holder adapted to receive a second workpiece; said second workpiece holder having a second flash controlling surface for cooperation with said first flash controlling surface to form an annular cavity for the flash resulting from said frictional welding operation; and means including an ejection plunger for ejecting said unitary structure from said workpiece holders; said ejection plunger being adapted to move said structure and said flash in such a direction as to cause said shearing edge to shear off said flash as said structure is ejected from said first workpiece holder.
Claim 5
Dependent Claim
171 words
In a friction welding apparatus for friction welding a first workpiece to a second workpiece to form a unitary structure: a first workpiece holder formed to receive a first workpiece; said first workpiece holder having a flash controlling surface and a shearing edge adjacent to said first workpiece; means forming a shoulder on said first workpiece holder; a hydraulically operated holding ram adapted to hold a portion of said first workpiece against said shoulder; a second workpiece holder adapted to receive a second workpiece; said second workpiece holder having a second flash controlling surface for cooperation with said first flash controlling surface to form an annular cavity for the flash resulting from said frictional welding operation; and means including a hydraulically operated ejection plunger for ejecting said unitary structure from said workpiece holders; said ejection plunger being adapted to hydraulically move said structure and said flash in such a direction as to cause said shearing tool to shear off said flash as said structure is ejected from said first workpiece holder.
Claim 6
Dependent Claim
171 words
In a friction welding apparatus for friction welding a first workpiece to a second workpiece to form a unitary structure: a first workpiece holder formed to receive a first workpiece; said first workpiece holder having a flash controlling surface and a shearing edge adjacent to said first workpiece; means forming a shoulder on said first workpiece holder; a hydraulically operated holding ram adapted to hold a portion of said first workpiece against said shoulder; a second workpiece holder adapted to receive a second workpiece; said second workpiece holder having a second flash controlling surface for cooperation with said first flash controlling surface to form an annular cavity for the flash resulting from said frictional welding operation; and means including a hydraulically operated ejection plunger for ejecting said unitary structure from said workpiece holders; said ejection plunger being adapted to hydraulically move said structure and said flash in such a direction as to cause said shearing tool to shear off said flash as said structure is ejected from said first workpiece holder.
Claim 7
Dependent Claim
255 words
In a friction welding apparatus for friction welding a first workpiece to a second workpiece to form a unitary structure. a first workpiece holder formed with an opening adapted to receive a first workpiece; said first workpiece holder having a flash controlling surface adapted to shape the flush resulting from said friction welding operation; said first workpiece holder also having a shearing tool adapted for shearing off said flash; said flash controlling surface and said shearing tool being a unitary insert of said first workpiece holder positioned about said opening and having a shearing edge adjacent to said first workpiece; means forming an annular shoulder on said first workpiece holder about one end of the opening therein; a holding ram adapted to hold a portion of said first workpiece againSt said shoulder; a second workpiece holder adapted to receive a second workpiece; said second workpiece holder having a second flash controlling surface for cooperation with said first flash controlling surface to form an annular cavity for the flash resulting from said frictional welding operation to cause the same to be formed into a substantially coplanar annulus at substantially right angles to said workpieces; said second flash controlling surface being positioned about said second holder; means including an ejection plunger for ejecting said unitary structure from said workpiece holders; said ejection plunger being adapted to move said structure and said flash in such a direction a to cause said shearing tool to shear off said flash as said structure is ejected from said first workpiece holder.
Claim 8
Dependent Claim
255 words
In a friction welding apparatus for friction welding a first workpiece to a second workpiece to form a unitary structure. a first workpiece holder formed with an opening adapted to receive a first workpiece; said first workpiece holder having a flash controlling surface adapted to shape the flush resulting from said friction welding operation; said first workpiece holder also having a shearing tool adapted for shearing off said flash; said flash controlling surface and said shearing tool being a unitary insert of said first workpiece holder positioned about said opening and having a shearing edge adjacent to said first workpiece; means forming an annular shoulder on said first workpiece holder about one end of the opening therein; a holding ram adapted to hold a portion of said first workpiece againSt said shoulder; a second workpiece holder adapted to receive a second workpiece; said second workpiece holder having a second flash controlling surface for cooperation with said first flash controlling surface to form an annular cavity for the flash resulting from said frictional welding operation to cause the same to be formed into a substantially coplanar annulus at substantially right angles to said workpieces; said second flash controlling surface being positioned about said second holder; means including an ejection plunger for ejecting said unitary structure from said workpiece holders; said ejection plunger being adapted to move said structure and said flash in such a direction a to cause said shearing tool to shear off said flash as said structure is ejected from said first workpiece holder.
Claim 9
Dependent Claim
48 words
In a friction welding apparatus for friction welding a first workpiece to a second workpiece to form a unitary structure according to claim 4 wherein said means including an ejection plunger comprises hydraulic means operable as desired to cause said plunger to eject and shear said unitary structure.
Claim 10
Dependent Claim
60 words
In a friction welding apparatus for friction welding a first workpiece to a second workpiece to form a unitary structure according to claim 5 wherein said annular cavity between said flash controlling surfaces on said first and second holders is shaped so that the flash has a relatively thin cross section adjacent said workpieces to minimize the shearing force required.
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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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |