US3709083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically actuated punch press
Assignee: Individual
•
Filing: 1971-03-18
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Granted: 1973-01-09
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Expires: 1991-03-18
Abstract
Abstract A solenoid having an axially movable armature is coupled to and arranged to displace the movable member of a punch press. A plurality of different tools may be clamped to an anvil and tool holder of the punch press for either assembly line or work bench type of production. The apparatus is small and relatively light in weight. The solenoid may have resin encapsulated, coiled aluminum foil strips instead of the more conventional wire wound coil.
Inventors
- 👤 N Doherty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:50
CPC Classifications
B; B21; B21D; B21D24/00; B21D28/00; B21J; B21J7/00; B21J7/20; B21J7/22; B21J7/30; B30; B30B; B30B1/00; B30B1/42; B30B13/00; Y; Y10; Y10T; Y10T83/00; Y10T83/869; Y10T83/8765; Y10T83/8776; Y10T83/8785; Y10T83/8821; Y10T83/8855; Y10T83/929; Y10T83/9457; Y10T83/9473; Y10T83/9476
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
117 words
An electrically actuated punch press comprising: a. a die shoe having an anvil mounted thereon; b. a plurality of leader pins extending from said die shoe; c. a tool holder slidably mounted on said leader pins, said tool holder being in opposition to said anvil; d. spring means for normally urging said tool holder in a direction away from said anvil; e. a solenoid having a wound coil and an armature linearly movable through said coil, said armature engaging said tool holder when said solenoid is energized thereby driving said tool holder in a direction towards said anvil; and f. means for moving said armature in a direction away from said anvil when said solenoid is de-energized.
Claim 2
Dependent Claim
117 words
An electrically actuated punch press comprising: a. a die shoe having an anvil mounted thereon; b. a plurality of leader pins extending from said die shoe; c. a tool holder slidably mounted on said leader pins, said tool holder being in opposition to said anvil; d. spring means for normally urging said tool holder in a direction away from said anvil; e. a solenoid having a wound coil and an armature linearly movable through said coil, said armature engaging said tool holder when said solenoid is energized thereby driving said tool holder in a direction towards said anvil; and f. means for moving said armature in a direction away from said anvil when said solenoid is de-energized.
Claim 3
Dependent Claim
32 words
The punch press in accordance with claim 1 wherein said solenoid is contained within a housing and wherein there is further included means for coupling said housing directly to said leader pins.
Claim 4
Dependent Claim
25 words
The punch press in accordance with claim 1 wherein there is further included bushing means in said tool holder for slidably receiving said leader pins.
Claim 5
Dependent Claim
36 words
The punch press in accordance with claim 1 wherein there is further included resilient bumper means on said leader pins for cushioning said punch holder at the end of its stroke when said solenoid is energized.
Claim 6
Dependent Claim
36 words
The punch press in accordance with claim 1 wherein there is further included resilient bumper means on said leader pins for cushioning said punch holder at the end of its stroke when said solenoid is de-energized.
Claim 7
Dependent Claim
35 words
The punch press in accordance with claim 1 wherein said wound solenoid coil comprises a length of aluminum foil and there is further included a layer of electrical insulation between adjacent turns of said winding.
Claim 8
Dependent Claim
28 words
The punch press in accordance with claim 1 wherein said tool holder includes a concave seat, said armature having a spherical end portion in engagement with said seat.
Claim 9
Dependent Claim
22 words
The punch press in accordance with claim 2 wherein there is further included resilient bumper means intermediate said armature and said housing.
Claim 10
Dependent Claim
25 words
The punch press in accordance with claim 2 wherein said means for moving said armature comprises spring means extending between said housing and said armature.
Claim 11
Dependent Claim
56 words
The punch press in accordance with claim 9 wherein there is further included a pin extending through said armature, one end of said spring means being coupled to said pin, said housing including a cap and means for securing said cap to said housing, the other end of said spring means being secured to said cap.
Claim 12
Dependent Claim
18 words
The punch press in accordance with claim 2 wherein said solenoid coil is encapsulated in an epoxy resin.
Claim 13
Dependent Claim
17 words
The punch press in accordance with claim 11 wherein said encapsulated coil is keyed to said housing.
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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |