US3694887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wedgemaker
Assignee: Advanced Machine and Tool Corp
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Filing: 1970-10-30
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Granted: 1972-10-03
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Expires: 1990-10-30
Abstract
Abstract An improved method and apparatus for making insulating wedges for use in an automatic coil placing machine which first severs the wedge material and then contemporaneously forms and slits the wedge is disclosed. The machine is adapted to provide wedges of at least two different lengths and to slit only the longer wedges. The improvement comprises a power operated punch, a forming die, and a plurality of cutting surfaces some of which are retractable wherein the punch forces the wedge blanks through the forming die and past the cutting surfaces in a single stroke.
Inventors
- 👤 Robert G Walker
- 👤 Donald E Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:56
CPC Classifications
H; H02; H02K; H02K15/00; H02K15/13; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/51; Y10T29/5136; Y10T29/5137; Y10T29/5142; Y10T29/53; Y10T29/5313; Y10T29/53143; Y10T29/53152
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
57 words
In an automatic coil placing machine, an improved wedge maker comprising: means for feeding wedge material in increments of a first length; means for severing the wedge material into wedge blanks of said first length; means for contemporaneously forming and slitting the wedge blanks; and means for inserting the thus formed and slit wedges into a stator.
Claim 2
Dependent Claim
57 words
In an automatic coil placing machine, an improved wedge maker comprising: means for feeding wedge material in increments of a first length; means for severing the wedge material into wedge blanks of said first length; means for contemporaneously forming and slitting the wedge blanks; and means for inserting the thus formed and slit wedges into a stator.
Claim 3
Dependent Claim
25 words
The improvement of claim 1 further comprising means for modifying the feed means whereby wedge material may be fed in increments of a second length.
Claim 4
Dependent Claim
32 words
The improvement of claim 2 further comprising means for at least partially disabling said forming and slitting means whereby material fed in increments of said second length may be formed without slitting.
Claim 5
Dependent Claim
43 words
The improvement of claim 1 wherein said forming and slitting means comprises: a power operated punch, a forming die, and a plurality of cutting surfaces; said punch forcing wedge blanks through said forming die and past said cutting surfaces in a single stroke.
Claim 6
Dependent Claim
23 words
The improvement of claim 4 wherein said plurality is four and further comprising means for selectively retracting two of said four cutting surfaces.
Claim 7
Dependent Claim
51 words
The improvement of claim 5 further means for selectively modifying the feed means whereby wedge material may be fed in increments of a second length and wherein said means for retracting is activated for wedges of the shorter of the two said lengths whereby said shorter wedges are formed without slitting.
Claim 8
Independent Claim
88 words
The method of providing a plurality of wedges of each of at least two lengths of insulating material for the slots of a stator comprising: feeding the insulating material from a roll of stock material; selectively cutting the thus fed material to provide wedge blanks of at least two different lengths; selectively contemporaneously forming a longer wedge into a U-shape and laterally slitting that wedge, and selectively forming a shorter wedge into a U-shape without laterally slitting that wedge whereby both slit and unslit wedges may be produced.
Claim 9
Independent Claim
88 words
The method of providing a plurality of wedges of each of at least two lengths of insulating material for the slots of a stator comprising: feeding the insulating material from a roll of stock material; selectively cutting the thus fed material to provide wedge blanks of at least two different lengths; selectively contemporaneously forming a longer wedge into a U-shape and laterally slitting that wedge, and selectively forming a shorter wedge into a U-shape without laterally slitting that wedge whereby both slit and unslit wedges may be produced.
Claim 10
Dependent Claim
70 words
A machine for providing two pairs of slits in a strip of insulating material, the two slits of each of said pairs extending inwardly from opposite edges of the strip of insulating material toward each other comprising: a power operated punch, a forming die, and a plurality of fixed cutting surfaces; said punch forcing said insulating material through said forming die and past said cutting surfaces in a single stroke.
Claim 11
Dependent Claim
70 words
A machine for providing two pairs of slits in a strip of insulating material, the two slits of each of said pairs extending inwardly from opposite edges of the strip of insulating material toward each other comprising: a power operated punch, a forming die, and a plurality of fixed cutting surfaces; said punch forcing said insulating material through said forming die and past said cutting surfaces in a single stroke.
Claim 12
Dependent Claim
45 words
The machine of claim 8 further comprising a pair of retractable cUtting surfaces, said plurality of fixed cutting surfaces positioned to provide one of said pairs of slits and said pair of retractable cutting surfaces positioned to provide the other of said pairs of slits.
References Cited (Backward Citations)
US3519862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |