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Abstract
Abstract A CHANNEL TYPE SPACER EXPANDER IS USED WITH A PAIR OF SIDE RAILS AS A PISTON RING OF AN INTERNAL COMBUSTION ENGINE AND TAKES THE FORM OF A DISCONTINUOUS CIRCLE COMPOSED OF A PLURALITY OF EQUALLY-SPACED UNITARY CHANNELS HAVING A C-SHAPED CROSS-SECTION AND IS PROVIDED WITH A PAIR OF PROJECTIONS AT THE OUTER EDGES THEREOF AND A PLURALITY OF U-SHAPED BENT PORTIONS, EACH DISPOSED BETWEEN THE ADJACENT UNITARY CHANNELS. THE CONNECTING PORTION BETWEEN THEUNITARY CHANNEL AND THE U-SHAPED BENT PORTION HAS CURVED EDGES TO REINFORCE THE CONNECTION THEREBETWEEN. A PAIR OF PROJECTIONS PROTRUDE ON THE OPPOSITE SIDES OF THE CLOSED PORTION TO PREVENT THE ASSOCIATED SIDE RAILS FROM DEFLECTING IN EXCESS OF 0.1MM. THE WHOLE SURFACE OF THE SPACER EXPANDER IS CHROME-PLATED AND-OR THE INNER AND OUTER PERIPHERAL SURFACES OF THE ASSOCIATED SIDE RAILS AND THEN COATED WITH POLY-TETRA-FLUORIDE-ETHYLENE TO PROVIDE BETTER MECHANICA. PROPERTIES.
Inventors
- 👤 Hiroshi Minegishi
Bibliographic Details
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
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