Patent US3762623A successfully refreshed from Google Patents.
US3762623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure welding apparatus
Assignee: Reynolds Metals Co
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Filing: 1972-04-10
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Granted: 1973-10-02
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Expires: 1992-04-10
Abstract
Abstract An apparatus for cold welding at least one electrical lead on a strip of electrically conductive material which is adapted to be wound in coil form to make a strip conductor coil. The apparatus has a pair of cooperating dies and a pneumatically actuated cam system for urging one of the dies toward the other die to thereby cold or pressure weld the lead against the strip upon interposing the lead and strip between the cooperating dies.
Inventors
- 👤 H Brunner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:23
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/02; Y; Y10; Y10T; Y10T156/00; Y10T156/12; Y10T156/125; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49071; Y10T29/53; Y10T29/5313; Y10T29/532; Y10T29/53209
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
188 words
An apparatus for fixing at least one lead on a strip of electrically conductive material which is adapted to be wound in coil form to make a strip conductor coil, said apparatus comprising, a first die supported at a fixed position, a second die attached to a die plate, means yieldingly holding said die plate and said second die spaced from said first die, and cam means for engaging said die plate and moving said die plate and second die toward said first die while providing a substantial mechanical advantage which assures pressure welding of said lead against said strip upon interposing said lead and strip between said dies, said cam means comprising a supporting structure, a pair of cams each having an upper and a lower portion, and a pair of pivot pins each supporting an associated cam between its upper and lower portions for pivoting movements, and said apparatus further comprising a pneumatic actuator for engaging the upper portions of said cams causing pivoting thereof about said pins and causing said lower portions to urge said die plate and said second die toward said first die.
Claim 2
Independent Claim
188 words
An apparatus for fixing at least one lead on a strip of electrically conductive material which is adapted to be wound in coil form to make a strip conductor coil, said apparatus comprising, a first die supported at a fixed position, a second die attached to a die plate, means yieldingly holding said die plate and said second die spaced from said first die, and cam means for engaging said die plate and moving said die plate and second die toward said first die while providing a substantial mechanical advantage which assures pressure welding of said lead against said strip upon interposing said lead and strip between said dies, said cam means comprising a supporting structure, a pair of cams each having an upper and a lower portion, and a pair of pivot pins each supporting an associated cam between its upper and lower portions for pivoting movements, and said apparatus further comprising a pneumatic actuator for engaging the upper portions of said cams causing pivoting thereof about said pins and causing said lower portions to urge said die plate and said second die toward said first die.
Claim 3
Dependent Claim
62 words
An apparatus as set forth in claim 1 in which one of said dies has a plurality of parallel projections provided therein, said projections serving to decrease the effective contact area of said one die so that with said actuator applying a given force the load per unit area exerted by said projections assures said pressure welding is achieved with optimum efficiency.
Claim 4
Dependent Claim
54 words
An apparatus as set forth in claim 1 in which said pneumatic actuator comprises an air cylinder having a piston rod and a cam actuating member attached to the terminal outer end of said rod, said cam actuating member being adapted to engage said upper portions of said cams upon actuating said air cylinder.
Claim 5
Dependent Claim
31 words
An apparatus as set forth in claim 1 and further comprising a device for mechanically cleaning that surface of said lead which is to be brought into contact with said strip.
Claim 6
Dependent Claim
78 words
An apparatus as set forth in claim 1 and further comprising a shaft supporting a supply roll of lead material for unwinding rotation, a device for unwinding a predetermined length of said lead material from said supply roll and moving it in aligned relation between one of said dies and said strip, and a cutter operated by said pneumatic actuator for cutting said lead material to define said lead simultaneously with the pressure welding thereof against said strip.
Claim 7
Dependent Claim
31 words
An apparatus as set forth in claim 1 and further comprising guide means guiding said die plate and hence said second die for movement toward and away from said first die.
Claim 8
Independent Claim
176 words
An apparatus for pressure welding a pair of leads on a strip of electrically conductive material which is adapted to be wound in coil form, one of said leads forming the outer lead of one strip conductor coil made from said strip and the other of said leads forming the inner lead of another strip conductor coil made from said strip, said apparatus comprising, a supporting structure having a bottom support and a top support, a bottom die fixed on said bottom support, a die plate, a top die attached to the bottom surface of said die plate, means yieldingly suspending said die plate and said top die from said top support and in spaced relation from said bottom die, a pair of cams pivotally supported on said supporting structure, said cams being adapted to engage said die plate and move said die plate and top die toward said bottom die while providing a substantial mechanical advantage which assures pressure welding of said leads against said strip upon interposing said leads and strip between said dies.
Claim 9
Independent Claim
176 words
An apparatus for pressure welding a pair of leads on a strip of electrically conductive material which is adapted to be wound in coil form, one of said leads forming the outer lead of one strip conductor coil made from said strip and the other of said leads forming the inner lead of another strip conductor coil made from said strip, said apparatus comprising, a supporting structure having a bottom support and a top support, a bottom die fixed on said bottom support, a die plate, a top die attached to the bottom surface of said die plate, means yieldingly suspending said die plate and said top die from said top support and in spaced relation from said bottom die, a pair of cams pivotally supported on said supporting structure, said cams being adapted to engage said die plate and move said die plate and top die toward said bottom die while providing a substantial mechanical advantage which assures pressure welding of said leads against said strip upon interposing said leads and strip between said dies.
Claim 10
Dependent Claim
44 words
An apparatus as set forth in claim 7 in which said means yieldingly suspending said die plate comprises a plurality of mechanical springs each having its top end portion attached to said top support and its bottom end portion attached to said die plate.
Claim 11
Dependent Claim
20 words
An apparatus as set forth in claim 8 in which said mechanical springs comprise a plurality of coiled tension springs.
Claim 12
Dependent Claim
111 words
An apparatus as set forth in claim 8 in which said supporting structure comprises a pair of spaced vertical plates arranged in parallel relation and fixed in position between said bottom and top supports with each of said cams having an upper and a lower portion and said apparatus further comprising a pair of pivot pins having opposed end portions supported by said vertical plates and each pin supporting an associated cam for pivoting movements, and a pneumatic actuator for engaging the upper portions of said cams causing pivoting thereof about said pins and causing said lower portions to urge said die plate and said top die toward said bottom die.
Claim 13
Dependent Claim
54 words
An apparatus as set forth in claim 10 in which said pneumatic actuator comprises an air cylinder having a piston rod and a cam actuating member attached to the terminal outer end of said rod, said cam actuating member being adapted to engage said upper portions of said cams upon actuating said air cylinder.
Claim 14
Dependent Claim
49 words
An apparatus as set forth in claim 11 in which the upper portion of each cam has an arcuate surface and said cam actuating member has an inverted bell-shaped surface, said bell-shaped surface being adapted to engage said arcuate surfaces to provide said pivoting movements in a gradual manner.
Claim 15
Dependent Claim
78 words
An apparatus as set forth in claim 10 and further comprising a shaft supporting a supply roll of lead material for unwinding rotation, a device for unwinding a predetermined length of said lead material from said supply roll qnd moving it in aligned relation between one of said dies and said strip, and a cutter operated by said pneumatic actuator for cutting said lead material to define said leads simultaneously with the pressure welding thereof against said strip.
Claim 16
Dependent Claim
31 words
An apparatus as set forth in claim 10 and further comprising guide means guiding said die plate and hence said top die for movement toward and away from said bottom die.
Claim 17
Dependent Claim
42 words
An apparatus as set forth in claim 14 in which said guide means comprises a pair of rods fixed to said die plate and a pair of support blocks fixed to said vertical plates and supporting said rods for vertical sliding movements.
Claim 18
Dependent Claim
32 words
An apparatus as set forth in claim 10 and further comprising a wire brush assembly for cleaning that surface of said leads which is to be brought into contact with said strip.
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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |