Patent US3897707A successfully refreshed from Google Patents.
US3897707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stamping device with a horizontally moveable stamping frame
Assignee: Individual
•
Filing: 1974-08-02
•
Granted: 1975-08-05
•
Expires: 1994-08-02
Abstract
Abstract A punching device in which a frame supports a matrix and a punch and receives a workpiece to be punched. When a punching operation is carried out the frame moves in one direction to engage the matrix with one side of the workpiece while the punch moves in the other direction to punch a hole in the workpiece. The frame is moveable on a base and has a rod connected thereto extending through an aperture in a stationary member fixed to the base. An abutment member is fixed to the rod and is slidable in the aperture while springs on the rod have inner ends engaging inner counterbearings slidable on the rod and engaging opposite sides of the abutment member and the stationary member. The springs are held compressed by outer counterbearings fixed to the rod at the outer ends of the springs.
Inventors
- 👤 Erwin Kruse
- 👤 Ludwig Regenbrecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:50
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/24; B21D28/243; Y; Y10; Y10T; Y10T83/00; Y10T83/525; Y10T83/538; Y10T83/869; Y10T83/8742; Y10T83/8743; Y10T83/8821; Y10T83/8824
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
191 words
In a stamping device in which a U-shaped frame has a rest position and has a matrix therein and a moveable punch therein spaced from the matrix, said frame adapted to receive a workpiece to be punched and being moveable from said rest position in the direction of the line of action of the punch to engage the matrix with one side of the workpiece while the punch advances in the frame in the opposite direction to carry out a punching operation on the workpiece, and spring means biasing on said frame toward said rest position, the improvement which comprises; a rod connected at one end to the frame and extending therefrom in the direction of movement of said frame, said spring means comprising a pair of springs axially disposed on the rod, inner counterbearings slidable on the rod at the ends of the springs nearest each other, outer counterbearings fixed to the rod at the other ends of the springs, a stationary member between said inner counterbearings and engaging both thereof in the rest position of said frame, and an abutment membeR fixed to said rod between said inner counterbearings.
Claim 2
Dependent Claim
191 words
In a stamping device in which a U-shaped frame has a rest position and has a matrix therein and a moveable punch therein spaced from the matrix, said frame adapted to receive a workpiece to be punched and being moveable from said rest position in the direction of the line of action of the punch to engage the matrix with one side of the workpiece while the punch advances in the frame in the opposite direction to carry out a punching operation on the workpiece, and spring means biasing on said frame toward said rest position, the improvement which comprises; a rod connected at one end to the frame and extending therefrom in the direction of movement of said frame, said spring means comprising a pair of springs axially disposed on the rod, inner counterbearings slidable on the rod at the ends of the springs nearest each other, outer counterbearings fixed to the rod at the other ends of the springs, a stationary member between said inner counterbearings and engaging both thereof in the rest position of said frame, and an abutment membeR fixed to said rod between said inner counterbearings.
Claim 3
Dependent Claim
29 words
A stamping device according to claim 1 in which said stationary member has a recess through which said rod extends, said abutment member being axially moveable in said recess.
Claim 4
Dependent Claim
17 words
A stamping device according to claim 1 in which said inner counterbearings are larger than said recess.
Claim 5
Dependent Claim
17 words
A stamping device according to claim 1 in which said abutment member is adjustable along said rod.
Claim 6
Dependent Claim
17 words
A stamping device according to claim 1 in which said rod is axially adjustable in said frame.
Claim 7
Dependent Claim
17 words
A stamping device according to claim 1 in which said outer counterbearings are adjustable on said rod.
Claim 8
Dependent Claim
21 words
A stamping device according to claim 2 in which said abutment member has the same axial dimensions as said stationary member.
Claim 9
Dependent Claim
35 words
A stamping device according to claim 7 in which said outer counterbearings are adjustable on said rod and when said frame is in the rest position thereof hold said springs in a state of compression.
Claim 10
Dependent Claim
23 words
A stamping device according to claim 8 which includes a base moveably supporting said frame, said stationary member being fixed to said base.
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) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |