US3680838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die bar or die bar attachment
Assignee: Individual
•
Filing: 1970-05-08
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Granted: 1972-08-01
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Expires: 1990-05-08
Abstract
Abstract The invention provides a die bar or a thimble-like tip attachment for a die bar of a type used for opening die sets. The die bar or attachment includes a roller (preferably nylon, or the equivalent) which enables the tool to roll along the die set.
Inventors
- 👤 Lynn D Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:36
CPC Classifications
B; B66; B66F; B66F15/00; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53683; Y10T29/53796; Y10T29/53896
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
51 words
A thimble-like attachment for the end of a die bar, said attachment comprising a body having a V-shaped cavity therein, said cavity having a contour and dimension which complements the contour and dimension of the tip end of said die bar, and a rolling means on the end of said attachment.
Claim 2
Dependent Claim
51 words
A thimble-like attachment for the end of a die bar, said attachment comprising a body having a V-shaped cavity therein, said cavity having a contour and dimension which complements the contour and dimension of the tip end of said die bar, and a rolling means on the end of said attachment.
Claim 3
Dependent Claim
14 words
The thimble-like attachment of claim 1 wherein said rolling means is a ball bearing.
Claim 4
Dependent Claim
36 words
The thimble-like attachment of claim 1 wherein said rolling means is a roller supported by said body on an axis which is perpendicular to the axis in which said die bar moves while it is working.
Claim 5
Dependent Claim
25 words
The thimble-like attachment of claim 3 and a pair of end plates on opposite sides of said body for supporting trunnions formed on said roller.
Claim 6
Dependent Claim
13 words
The thimble-like attachment of claim 4 wherein said roller is a nylon roller.
Claim 7
Dependent Claim
30 words
The thimble-like attachment of claim 3 wherein said roller is made from a tough material which is softer than steel and which has a memory that prevents any normal deformation.
Claim 8
Dependent Claim
37 words
The thimble-like attachment of claim 3 wherein the roller is close to the tip of the V of the cavity and its axis is at all points substantially in alignment with the center line of the V.
Claim 9
Dependent Claim
73 words
The combination of a die bar having an offset portion near one end which is V-shaped in cross section with a transversely extending tip, and a readily removable thimble-like attachment for that end, said attachment comprising a body having a cavity therein, said cavity having a contour and dimension which complements the contour and dimension of the tip end of said die bar, and a rolling means on the end of said attachment.
Claim 10
Dependent Claim
73 words
The combination of a die bar having an offset portion near one end which is V-shaped in cross section with a transversely extending tip, and a readily removable thimble-like attachment for that end, said attachment comprising a body having a cavity therein, said cavity having a contour and dimension which complements the contour and dimension of the tip end of said die bar, and a rolling means on the end of said attachment.
Claim 11
Dependent Claim
95 words
The combination of a die bar having an offset portion near one end which is V-shaped in cross section with a transversely extending tip, and a readily removable thimble-like attachment for that end, said attachment comprising a body having a cavity therein, said cavity having a contour and dimension which complements the contour and dimension of the tip end of said die bar, and a roller on the end of said attachment positioned close to said tip and approximately aligned with the center of the V, and rotatable aBout an axis parallel to said tip.
Claim 12
Dependent Claim
95 words
The combination of a die bar having an offset portion near one end which is V-shaped in cross section with a transversely extending tip, and a readily removable thimble-like attachment for that end, said attachment comprising a body having a cavity therein, said cavity having a contour and dimension which complements the contour and dimension of the tip end of said die bar, and a roller on the end of said attachment positioned close to said tip and approximately aligned with the center of the V, and rotatable aBout an axis parallel to said tip.
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |