Patent US3827271A successfully refreshed from Google Patents.
US3827271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die holding device in an indirect extrusion machine
Assignee: Japan Steel Works Ltd
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Filing: 1972-10-31
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Granted: 1974-08-06
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Expires: 1992-10-31
Abstract
Abstract A die in an indirect extrusion machine is secured to the stem of the machine at its free end through a die gripper secured to the free end of the stem by such means as screwing and the gripper is adapted to snugly receive the die without allowing it to shift axially.
Inventors
- 👤 S Kishino
- 👤 H Amano
- 👤 T Abe
- 👤 R Tamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:38
CPC Classifications
B; B21; B21C; B21C23/00; B21C23/21; B21C23/218; B21C25/00; B21C26/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
100 words
In an indirect extruding machine having a stem holder, a stem secured at one end thereof to the stem holder and the stem having a threaded opposite end, the improvement comprising a hollow die grip member having a threaded end and an end opposite thereto, said threaded end adapted to be connected to said threaded opposite end of said stem and having a semi-circular projection extending outwardly from said opposite end and having an inwardly extending lip at the end of said semicircular projection, said hollow die grip member adapted to snugly receive a corresponding die within said semicircular projection.
Claim 2
Dependent Claim
100 words
In an indirect extruding machine having a stem holder, a stem secured at one end thereof to the stem holder and the stem having a threaded opposite end, the improvement comprising a hollow die grip member having a threaded end and an end opposite thereto, said threaded end adapted to be connected to said threaded opposite end of said stem and having a semi-circular projection extending outwardly from said opposite end and having an inwardly extending lip at the end of said semicircular projection, said hollow die grip member adapted to snugly receive a corresponding die within said semicircular projection.
Claim 3
Dependent Claim
114 words
In an indirect extruding machine having a stem holder, a stem secured at one end thereof to the stem holder and the stem having a threaded opposite end, the improvement comprising a hollow die grip member having a threaded end and an end opposite thereto, said threaded end adapted to be connected to said threaded opposite end of said stem and having a semi-circular projection extending outwardly from said opposite end and having an inwardly extending lip at the end of said semi-circular projection, and a die having a groove provided around the periphery thereof adapted to engage said lip of said semi-circular projecting, whereby said die is snugly supported within said semi-circular projection.
Claim 4
Dependent Claim
114 words
In an indirect extruding machine having a stem holder, a stem secured at one end thereof to the stem holder and the stem having a threaded opposite end, the improvement comprising a hollow die grip member having a threaded end and an end opposite thereto, said threaded end adapted to be connected to said threaded opposite end of said stem and having a semi-circular projection extending outwardly from said opposite end and having an inwardly extending lip at the end of said semi-circular projection, and a die having a groove provided around the periphery thereof adapted to engage said lip of said semi-circular projecting, whereby said die is snugly supported within said semi-circular projection.
Claim 5
Dependent Claim
165 words
A die mounting device and die combination in an indirect extruding machine having a stem holder comprising: a hollow stem secured at one end thereof to the stem holder of said indirect extruding machine; a pipe member positioned within said hollow stem and having threaded opposite peripheral end portions, one end portion thereof being secured to said stem holder, the other end portion thereof extending beyond said hollow stem; a hollow die grip member having one threaded end and an opposite end, said threaded end being connected to said extending end of said pipe member, said hollow die grip membEr having a semi-circular projection extending outwardly from said opposite end and having an inwardly extending lip at the end of said semi-circular projection, said die grip member adapted to snugly receive a die within said semi-circular projection; and a die having a groove provided around the periphery thereof and adapted to engage said lip of said semi-circular projection, whereby said die is snugly supported therein.
Claim 6
Dependent Claim
165 words
A die mounting device and die combination in an indirect extruding machine having a stem holder comprising: a hollow stem secured at one end thereof to the stem holder of said indirect extruding machine; a pipe member positioned within said hollow stem and having threaded opposite peripheral end portions, one end portion thereof being secured to said stem holder, the other end portion thereof extending beyond said hollow stem; a hollow die grip member having one threaded end and an opposite end, said threaded end being connected to said extending end of said pipe member, said hollow die grip membEr having a semi-circular projection extending outwardly from said opposite end and having an inwardly extending lip at the end of said semi-circular projection, said die grip member adapted to snugly receive a die within said semi-circular projection; and a die having a groove provided around the periphery thereof and adapted to engage said lip of said semi-circular projection, whereby said die is snugly supported therein.
Claim 7
Dependent Claim
55 words
The device of claim 3, further comprising a plurality of pins connected between said hollow die grip member and said stem for centering said hollow die grip member relative to said stem and further comprising a bolster member adapted to be interposed between the opposite end of said hollow die grip member and said die.
Claim 8
Dependent Claim
131 words
A die for use in an indirect extruding machine having a stem holder, a stem secured at one end thereof to the stem holder and the stem having a threaded opposite end, a threaded hollow die grip member having a threaded end and an end opposite thereto, said threaded end of said die grip member adapted to be connected to said threaded opposite end of said stem and said opposite end of said threaded hollow die grip member having a semi-circular projection extending outwardly from said opposite end and having an inwardly extending lip at the end of said semi-circular projection, said die comprising a body having a groove provided around the periphery thereof and adapted to engage said lip of said semi-circular projection, whereby said die is snugly supported therein.
Claim 9
Dependent Claim
131 words
A die for use in an indirect extruding machine having a stem holder, a stem secured at one end thereof to the stem holder and the stem having a threaded opposite end, a threaded hollow die grip member having a threaded end and an end opposite thereto, said threaded end of said die grip member adapted to be connected to said threaded opposite end of said stem and said opposite end of said threaded hollow die grip member having a semi-circular projection extending outwardly from said opposite end and having an inwardly extending lip at the end of said semi-circular projection, said die comprising a body having a groove provided around the periphery thereof and adapted to engage said lip of said semi-circular projection, whereby said die is snugly supported therein.
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) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |