Patent US4375774A successfully refreshed from Google Patents.
US4375774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable punch head
Assignee: Wilson Tool International Inc
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Filing: 1981-08-21
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Granted: 1983-03-08
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Expires: 2001-08-21
Abstract
Abstract A punch assembly having a punch head adjustably connected to a punch drive. By manipulation of this adjustment and by measuring only the length of the punch unit from the punch head to the tip of the punch tip, the operator may guarantee that when the punch unit is placed within a punch guide in a nonpunching position, the punch tip will be properly recessed within the punch guide.
Inventors
- 👤 Kenneth J. Wilson
- 👤 Ronald G. Rosene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:24
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; B21D28/34; B21D28/346; B26; B26D; B26D5/00; B26D5/02; B26F; B26F1/00; B26F1/02; B26F1/14; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2135; Y10T83/215; Y10T83/2155; Y10T83/2159; Y10T83/929; Y10T83/9457; Y10T83/9473; Y10T83/9476; Y10T83/9483; Y10T83/9486
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
148 words
A punch assembly comprising a punch guide having an exterior spring support shoulder, a punch driver carried within the punch guide and moveable axially therein between upper and lower positions during a punching operation, a punch tip carried by the punch driver, a punch head attached to the punch driver and including a top and means defining constantly spaced upper and lower punch head flanges, a spring support ring bearing against the spring support shoulder and against the lower punch head flange when the punch driver with its attached punch head is in its upper position, and a compression spring seated at its upper end against the upper punch head flange and at its lower end against the support ring to render constant the spacing between the punch head top and the spring support shoulder of the punch guide when the punch driver is in its upper position.
Claim 2
Dependent Claim
148 words
A punch assembly comprising a punch guide having an exterior spring support shoulder, a punch driver carried within the punch guide and moveable axially therein between upper and lower positions during a punching operation, a punch tip carried by the punch driver, a punch head attached to the punch driver and including a top and means defining constantly spaced upper and lower punch head flanges, a spring support ring bearing against the spring support shoulder and against the lower punch head flange when the punch driver with its attached punch head is in its upper position, and a compression spring seated at its upper end against the upper punch head flange and at its lower end against the support ring to render constant the spacing between the punch head top and the spring support shoulder of the punch guide when the punch driver is in its upper position.
Claim 3
Dependent Claim
21 words
The improvement of claim 1 wherein said adjustment means constitutes a threaded connection between the punch head and the punch driver.
Claim 4
Dependent Claim
20 words
The improvement of claim 1 and further including locking pin means for selectively preventing the adjustment of said adjustment means.
Claim 5
Dependent Claim
176 words
A punch assembly comprising a punch guide having an exterior spring support shoulder, a punch driver axially moveable between upper and lower positions within the punch guide, a punch tip carried by the punch driver, a punch head attached to the punch driver and including a top and means defining constantly spaced upper and lower punch head flanges, a compression spring disposed exteriorly about the punch head and seated at its upper end against the upper flange of the punch head, a spring support ring operatively associated with the spring support shoulder and with the lower punch head flange when the punch driver is in its upper position and against which the compression spring seats, the axial length of the compression spring thus being rendered constant between the spring support ring and the upper punch head flange when the punch driver is in its upper position to thus render constant the normal spacing between the punch head top and the spring support shoulder of the punch guide when the punch driver is in its upper position.
Claim 6
Dependent Claim
176 words
A punch assembly comprising a punch guide having an exterior spring support shoulder, a punch driver axially moveable between upper and lower positions within the punch guide, a punch tip carried by the punch driver, a punch head attached to the punch driver and including a top and means defining constantly spaced upper and lower punch head flanges, a compression spring disposed exteriorly about the punch head and seated at its upper end against the upper flange of the punch head, a spring support ring operatively associated with the spring support shoulder and with the lower punch head flange when the punch driver is in its upper position and against which the compression spring seats, the axial length of the compression spring thus being rendered constant between the spring support ring and the upper punch head flange when the punch driver is in its upper position to thus render constant the normal spacing between the punch head top and the spring support shoulder of the punch guide when the punch driver is in its upper position.
Claim 7
Dependent Claim
31 words
The punch assembly of claims 1 or 4 including single adjustment means for adjusting the normal axial position of the punch driver and punch tip with respect to the punch guide.
Claim 8
Dependent Claim
217 words
A punch assembly comprising a punch guide having an exterior spring support shoulder, a punch driver axially slideable between upper and lower positions within the punch guide and having a threaded annular surface, a punch tip carried by the punch driver, means defining a punch head having a top and an annular threaded surface threadably engaging the annular threaded surface of the punch driver to enable axial adjustment of the punch driver with respect to the punch head, the punch head including means defining constantly spaced upper and lower flanges, a compression spring carried exteriorly about the punch head between the flanges and bearing upwardly against the upper flange, a spring support ring operatively associated with the spring support shoulder of the punch guide and with the lower flange of the punch head when the punch driver is in its upper position and against which the compression spring bears downwardly to render constant the normal spacing between the punch head top and the spring support shoulder of the punch guide when the punch driver is in its upper position, whereby the axial position of the punch tip within the punch guide may be varied by adjusting the axial position of the punch driver with respect to the punch head by means of their respective annular threaded surfaces.
Claim 9
Dependent Claim
217 words
A punch assembly comprising a punch guide having an exterior spring support shoulder, a punch driver axially slideable between upper and lower positions within the punch guide and having a threaded annular surface, a punch tip carried by the punch driver, means defining a punch head having a top and an annular threaded surface threadably engaging the annular threaded surface of the punch driver to enable axial adjustment of the punch driver with respect to the punch head, the punch head including means defining constantly spaced upper and lower flanges, a compression spring carried exteriorly about the punch head between the flanges and bearing upwardly against the upper flange, a spring support ring operatively associated with the spring support shoulder of the punch guide and with the lower flange of the punch head when the punch driver is in its upper position and against which the compression spring bears downwardly to render constant the normal spacing between the punch head top and the spring support shoulder of the punch guide when the punch driver is in its upper position, whereby the axial position of the punch tip within the punch guide may be varied by adjusting the axial position of the punch driver with respect to the punch head by means of their respective annular threaded surfaces.
Claim 10
Dependent Claim
35 words
The punch assembly of claims 1, 4 or 6 including means permitting the upward removal from the punch guide of a unit comprising the punch head, the compression spring, the punch driver and punch tip.
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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) | 1986-03-07 | 1986-09-06 | 1987-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-07 | 1990-09-06 | 1991-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-07 | 1994-09-06 | 1995-03-08 | $7700.00 | Window Closed / Lapsed |