Key system for vacuum cleaner hose connection
US4940415A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 20, 1988 |
| Grant date | Jul 10, 1990 |
| Priority date | — |
| Expiry date | Sep 20, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R13/005
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vacuum cleaner structure having a canister provided with a suction inlet and a flexible hose having an end provided with a hose connector adapted to be received in the suction inlet. Male and female electrical connectors are associated with the suction inlet and hose end, and lock and key elements are provided in association with the suction inlet and hose end for permitting connection of the hose end to the suction inlet only in the event that the electrical terminal portion provided on the suction hose end is complementary to the electrical connector provided on the canister. The lock and key elements may be integrally formed with the canister and hose structures, or may be selectively fixedly secured thereto as desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.