Patent US5269213A successfully refreshed from Google Patents.
US5269213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Punch apparatus
Assignee: International Business Machines Corp
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Filing: 1993-02-11
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Granted: 1993-12-14
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Expires: 2013-02-11
Abstract
Abstract Punch apparatus develops momentum of a desired magnitude. The momentum is transferred to a punch for driving the punch from a reset position to a punch position.
Inventors
- 👤 Anthony F. Coneski
- 👤 Douglas J. Sykora
- 👤 Mitchel Waian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:40
CPC Classifications
B; B26; B26D; B26D5/00; B26D5/08; B26D5/086; B21; B21D; B21D28/00; B21D28/002; B26F; B26F1/00; B26F1/02; B26F1/04; B30; B30B; B30B1/00; B30B1/42; B26F2210/00; B26F2210/08; Y; Y10; Y10T; Y10T83/00; Y10T83/869; Y10T83/8765; Y10T83/8768; Y10T83/8776; Y10T83/8785; Y10T83/8821; Y10T83/8825
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
198 words
A punch apparatus, comprising: a solenoid having a plunger and a pole piece, and being controllably energized for accelerating said plunger toward said pole piece from a first position to a second position for developing momentum of a desired magnitude; drive means having elastic properties and being impacted by said plunger for absorbing momentum developed by said plunger, such that the momentum causes said drive means to compress; and a punch communicating with said drive means having a punch tip for punching material, said punch having a mass which is substantially equal to the mass of said plunger so that efficiency of energy usage is effectively maximized by allowing momentum absorbed by said drive means from said plunger to be substantially completely transferred to said punch so that said punch is driven from a reset position to a punch position so that the punch tip punches the material, said solenoid being de-energized subsequent to impact between said plunger and said drive means and prior to contact between said plunger and said pole piece, said plunger decelerating to near-zero velocity upon impact with said drive means so that impact force between said plunger and said pole piece is minimized.
Claim 2
Dependent Claim
198 words
A punch apparatus, comprising: a solenoid having a plunger and a pole piece, and being controllably energized for accelerating said plunger toward said pole piece from a first position to a second position for developing momentum of a desired magnitude; drive means having elastic properties and being impacted by said plunger for absorbing momentum developed by said plunger, such that the momentum causes said drive means to compress; and a punch communicating with said drive means having a punch tip for punching material, said punch having a mass which is substantially equal to the mass of said plunger so that efficiency of energy usage is effectively maximized by allowing momentum absorbed by said drive means from said plunger to be substantially completely transferred to said punch so that said punch is driven from a reset position to a punch position so that the punch tip punches the material, said solenoid being de-energized subsequent to impact between said plunger and said drive means and prior to contact between said plunger and said pole piece, said plunger decelerating to near-zero velocity upon impact with said drive means so that impact force between said plunger and said pole piece is minimized.
Claim 3
Dependent Claim
30 words
A punch apparatus according to claim 1, wherein said plunger has an impact point comprising a replaceable insert which strikes said punch so as to transfer momentum to said punch.
Claim 4
Dependent Claim
15 words
A punch apparatus according to claim 1, wherein said drive means comprises a drive rod.
Claim 5
Dependent Claim
27 words
A punch apparatus according to claim 1, further comprising reset means for returning said punch to said reset position subsequent to being driven to said punch position.
Claim 6
Dependent Claim
14 words
A punch apparatus according to claim 4, wherein said reset means comprises spring means.
Claim 7
Dependent Claim
41 words
A punch apparatus according to claim 1, further comprising a punch tip guide for guiding the punch tip to the material as the punch is driven from the reset position to the punch position for ensuring accurate punching of the material.
Claim 8
Dependent Claim
26 words
A punch apparatus according to claim 1, further including reset means for returning said plunger to said first position subsequent to accelerating to said second position.
Claim 9
Dependent Claim
14 words
A punch apparatus according to claim 7, wherein said reset means comprises a spring.
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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) | 1996-12-13 | 1997-06-14 | 1997-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-13 | 2001-06-14 | 2001-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-13 | 2005-06-14 | 2005-12-14 | $7700.00 | Window Closed / Lapsed |