Electromagnetically energized oscillating head for spark erosion machine
Abstract
Abstract 924,617. Reciprocating motors. NASSOVIA WERKZEUGMASCHINENFABRIK G.m.b.H. July 24, 1961 [July 23, 1960], No. 26793/61. Class 35. [Also in Group XXII] Means for oscillating the electrode of a spark erosion machine in its direction of feed comprises an electrode support 5 mounted within a housing 1 on at least two spring elements 11, 12 having an adjustable pre-stress in the direction of oscillation which is produced by an electromagnet 2 through an air gap 8. The support 5 is screwed to an armature 7 or may be integral therewith. Each spring comprises inner and outer tubes 11<SP>1</SP> with intermediate rubber members 11 secured by vulcanizing. The prestressing of the springs to suit the weight of the electrode is adjustable by a ring 4 screwed into the housing and having a pointer 16 co-operating with a scale on the housing.
Inventors
- 👤 Kintzel Gerhard
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |