Patent US3916748A successfully refreshed from Google Patents.
US3916748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Punch assembly
Assignee: Individual
•
Filing: 1974-05-29
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Granted: 1975-11-04
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Expires: 1994-05-29
Abstract
Abstract A punch is installed eccentrically at front end of the cylindrical portion of the punch holder, which is then firmly fixed by means of the crescent-formed seat or split-half hollow cylindrical seat and the clamping block to the inside hole which is furnished at the front end of the ram.
Inventors
- 👤 Yuan-Ho Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:16
CPC Classifications
B; B21; B21D; B21D37/00; B21D37/04; B21D28/00; B21D28/24; B21D28/34; B21J; B21J13/00; B21J13/02; B21J13/03; Y; Y10; Y10T; Y10T279/00; Y10T279/26; Y10T83/00; Y10T83/929; Y10T83/9457; Y10T83/9473; Y10T83/9483
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
140 words
A punch mounting assembly and ram for use with a nut forming machine or the like comprising: a cylindrical bore formed in said ram; a semi-cylindrical seat rotatably mounted in said bore; means defining a semi-cylindrical cavity in said seat; the diameter of said semi-cylindrical cavity being less than that of said seat, the axes of said cavity and seat being essentially parallel but not coincident whereby said seat is crescent shaped in cross-section; a cylindrical punch holder mounted in said cavity, and means for mounting a punch on said punch holder on an axis essentially parallel to but non-coincident with said axes of said cavity and seat whereby said punch may be adjusted in said ram within a plane normal to the axes of said cavity and seat by independent rotation of said seat and said cylindrical punch holder.
Claim 2
Dependent Claim
140 words
A punch mounting assembly and ram for use with a nut forming machine or the like comprising: a cylindrical bore formed in said ram; a semi-cylindrical seat rotatably mounted in said bore; means defining a semi-cylindrical cavity in said seat; the diameter of said semi-cylindrical cavity being less than that of said seat, the axes of said cavity and seat being essentially parallel but not coincident whereby said seat is crescent shaped in cross-section; a cylindrical punch holder mounted in said cavity, and means for mounting a punch on said punch holder on an axis essentially parallel to but non-coincident with said axes of said cavity and seat whereby said punch may be adjusted in said ram within a plane normal to the axes of said cavity and seat by independent rotation of said seat and said cylindrical punch holder.
Claim 3
Dependent Claim
26 words
The punch mounting assembly as claimed in claim 1 wherein said semi-cylindrical seat is mounted within a lower half of said cylindrical bore in said ram.
Claim 4
Dependent Claim
27 words
The punch mounting assembly as claimed in claim 1 further comprising clamping block means for firmly securing said cylindrical punch holder to said seat and said ram.
Claim 5
Dependent Claim
27 words
The punch mounting assembly as claimed in claim 1 further comprising screw means threaded in said ram for incrementally adjustably rotating said seat about its said axis.
References Cited (Backward Citations)
US1174309A
Cited
US3544117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |