US3926082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Punching device having adjustable guide retainer
Assignee: Houdaille Industries Inc
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Filing: 1975-02-14
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Granted: 1975-12-16
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Expires: 1995-02-14
Abstract
Abstract A punching device includes a C-frame on which a punch and stripper assembly is upwardly urged by a lifter spring, there being a rotatably adjustable retainer plate having various shoulders positionable in a recess in the stripper sleeve for selecting the pinch point clearance, namely the clearance between the stripping sleeve and the die.
Inventors
- 👤 Langendorff Vitmar G Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:22
CPC Classifications
B; B21; B21D; B21D45/00; B21D45/003; B21D45/006; B21D28/00; B21D28/24; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2135; Y10T83/215; Y10T83/2155; Y10T83/2159; Y10T83/869; Y10T83/872; Y10T83/8722; Y10T83/8723; Y10T83/929; Y10T83/9457; Y10T83/9473; Y10T83/9483
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
185 words
A punching device comprising: a. a frame having a lower arm on which a die is supported, and an upper arm having a vertical bore aligned therewith; b. a punch-guide and stripper sleeve slidably disposed in the bore in said upper arm, there being a recess facing said bore and defining a shoulder facing away from said die; c. a punch having a body slidably disposed in said sleeve; d. a stripping spring acting between said sleeve and said punch to urge the lower end of said punch into said sleeve; e. a lifting spring acting between said sleeve and said upper arm and urging said sleeve away from said die; and f. a retainer plate movably secured to the upper side of said upper arm, said plate having a plurality of peripheral portions for overhanging Said bore and projecting into said recess of said sleeve, said portions each having a shoulder (1) facing toward said die, (2) being located at differing distances from said die, and (3) being respectively engageable with said shoulder on said sleeve in response to horizontal repositioning of said plate.
Claim 2
Dependent Claim
185 words
A punching device comprising: a. a frame having a lower arm on which a die is supported, and an upper arm having a vertical bore aligned therewith; b. a punch-guide and stripper sleeve slidably disposed in the bore in said upper arm, there being a recess facing said bore and defining a shoulder facing away from said die; c. a punch having a body slidably disposed in said sleeve; d. a stripping spring acting between said sleeve and said punch to urge the lower end of said punch into said sleeve; e. a lifting spring acting between said sleeve and said upper arm and urging said sleeve away from said die; and f. a retainer plate movably secured to the upper side of said upper arm, said plate having a plurality of peripheral portions for overhanging Said bore and projecting into said recess of said sleeve, said portions each having a shoulder (1) facing toward said die, (2) being located at differing distances from said die, and (3) being respectively engageable with said shoulder on said sleeve in response to horizontal repositioning of said plate.
Claim 3
Dependent Claim
27 words
A punching device according to claim 1 in which each of said peripheral portions project beneath said lifting spring for engaging said shoulder on said stripper sleeve.
Claim 4
Dependent Claim
26 words
A punching device according to claim 1 in which the upper surface of said retainer plate is coplanar with the upper surface of said upper arm.
Claim 5
Dependent Claim
39 words
A punching device according to claim 1 including a shoulder screw securing said plate to said upper arm, said shoulder screw having a central non-threaded bearing portion having a close fit with said retainer plate to position it accurately.
Claim 6
Dependent Claim
44 words
A punching device according to claim 1 in which said plate is circular at each said peripheral portion, said plate having a further peripheral portion movable to a substantially tangential relation to said bore where it has clearance with respect to said stripper sleeve.
Claim 7
Dependent Claim
32 words
A punching device according to claim 1 which includes detent means acting between said upper arm and said retainer plate for accurately locating each of said peripheral portions of said retainer plate.
Claim 8
Dependent Claim
37 words
A punching device according to claim 6 in which said retainer plate is rotatably mounted for movement about a vertical axis, said detent means including a plurality of detent elements disposed a uniform distance from said axis.
Claim 9
Dependent Claim
19 words
A punching device according to claim 7 in which said detent elements are ball-receptive recesses on said retainer plate.
Claim 10
Dependent Claim
17 words
A punching device according to claim 1 in which there are three of said retainer plate shoulders.
Claim 11
Dependent Claim
49 words
A punching device according to claim 1 in which said retainer plate has three vertical clearance walls arranged as three sides of a square, two of said clearance walls extending to two of said shoulders on said retainer plate, and the third extending for the thickness of said plate.
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) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |