Patent US3765285A successfully refreshed from Google Patents.
US3765285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal urethane die assembly and apparatus for using same
Assignee: Houdaille Industries Inc
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Filing: 1972-03-01
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Granted: 1973-10-16
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Expires: 1992-03-01
Abstract
Abstract A universal urethane die assembly for use in blanking, forming, drawing, embossing and the like. The assembly includes a urethane pressure pad which is rectangularly shaped with rounded corners. The retaining ring which surrounds and supports the pressure pad has unique dimensional requirements. Other features of the die assembly include a visual indicator for ascertaining the degree of deflection of the die assembly. Also included is a turret punch press which has a single urethane die assembly in lieu of an upper turret. A punching unit which includes a urethane die assembly in conjunction with a die button for use on presses and press brakes.
Inventors
- 👤 H Archer
- 👤 H Kaufmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:18
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/02; B21D28/18; B21D22/00; B21D22/10; B21D28/24; B21D28/34; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0405; Y10T83/0419; Y10T83/0433; Y10T83/0438; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2122; Y10T83/2133; Y10T83/2135; Y10T83/215; Y10T83/2155; Y10T83/566; Y10T83/869; Y10T83/8717; Y10T83/8727; Y10T83/8732; Y10T83/8742; Y10T83/929; Y10T83/9309; Y10T83/9411; Y10T83/9423; Y10T83/9425
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
83 words
In a turret punch press, a lower turret mounted for rotation about a vertical axis, a universal die assembly comprising an axial urethane pressure pad, a retaining ring surrounding said pressure pad, plunger means engageable with said pressure pad for applying an axial deflection force thereto and urethane spring means for resisting said deflection force, and means for mounting said universal die assembly above said lower turret for reciprocal movement with respect thereto and for applying a ram force to said plunger means.
Claim 2
Dependent Claim
83 words
In a turret punch press, a lower turret mounted for rotation about a vertical axis, a universal die assembly comprising an axial urethane pressure pad, a retaining ring surrounding said pressure pad, plunger means engageable with said pressure pad for applying an axial deflection force thereto and urethane spring means for resisting said deflection force, and means for mounting said universal die assembly above said lower turret for reciprocal movement with respect thereto and for applying a ram force to said plunger means.
Claim 3
Dependent Claim
123 words
A hole punching assembly for use on a punch press, press brake or the like comprising a pair of die holders, a die button mounted on one of said die holders, and a urethane die assembly mounted on the other of said die holders and comprising an axial urethane pressure pad, a retaining ring surrounding and radially supporting said pressure pad, a pressure plate above said retaining ring, a plunger between said pressure plate and said pressure pad, a urethane spring between said retainer ring and said pressure plate, a punch stern reciprocally carried on said other holder, and means connecting said retaining ring, said plunger, said pressure plate, said urethane spring and said punch stem in assembled relation on said other holder.
Claim 4
Dependent Claim
123 words
A hole punching assembly for use on a punch press, press brake or the like comprising a pair of die holders, a die button mounted on one of said die holders, and a urethane die assembly mounted on the other of said die holders and comprising an axial urethane pressure pad, a retaining ring surrounding and radially supporting said pressure pad, a pressure plate above said retaining ring, a plunger between said pressure plate and said pressure pad, a urethane spring between said retainer ring and said pressure plate, a punch stern reciprocally carried on said other holder, and means connecting said retaining ring, said plunger, said pressure plate, said urethane spring and said punch stem in assembled relation on said other holder.
Claim 5
Dependent Claim
19 words
The invention as defined in claim 2 wherein both of said die holders are formed on a C-shaped frame.
Claim 6
Dependent Claim
44 words
The invention as defined in claim 2 wherein said die button comprises an axial bore, a rigid disc in said bore, and a urethane spring betWeen said disc and the end of said bore for ejecting a slug vertically upwardly out of the bore.
References Cited (Backward Citations)
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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) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |