Swivel coupling assembly for vacuum cleaner
Abstract
Abstract A SWIVEL TYPE COUPLING ASSEMBLY FOR USE WITH AN OPERATING MEMBER OF MEMBERS, SUCH AS THE OPERATING WAND OF A VACUUM CLEANER AND/OR THE FLEXIBLE VACUUM CLEANER HOSE OF THE VACUM CLEANER, FOR MOVABLY COUPLING THE OPERATING MEMBER OF MEMBERS TO THE SOURCE OF SUCTION. THE COUPLING ASSEMBLY COMPRISES FIRST AND SECOND COUPLING MEMBERS DISPOSED IN COATING GENERALLY AXIALLY ALIGNED RELATIVELY ROTATIVELY ROTATABLE RELATION, AND WITH A RESILIENT RING TYPE SEALING MEMBER COACTING BETWEEN THE COUPLING MEMBERS FOR SEALING THE JUNCTURE BETWEEN THE MEMBERS AGAINST INGRESS OF AMBIENT AIR, THUS MAINTAINING THE SUCTION EFFICIENCY OF THE CLEANER WHILE PERMITTING RELATIVE ROTARY MOVEMENT BETWEEN THE COUPLING MEMBERS, THEREBY PERMITTING SWIVELING MOVEMENT OF THE OPERATING MEMBER OR MEMBERS WITH RESPECT TO THE SUCTION SOURCE.
Inventors
- 👤 Lee A Wolf
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |