Cordless pepper mill
US5022591A · kind A · utility
Inventor
Key dates
| Filing date | Nov 27, 1989 |
| Grant date | Jun 11, 1991 |
| Priority date | — |
| Expiry date | Nov 27, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47J42/10
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A cordless pepper mill has an elongated housing enclosing a rotary mill, a gear reduction unit having an output shaft connected to the mill, a motor having an output shaft connected to the gear reduction unit, a rechargeable battery for driving the motor and a switch for selectively connecting the battery to the motor. The housing has a cylindrical end portion dimensioned for frictional engagement within a cylindrical recess formed in a top surface of a recharging unit. Cooperating electrical contacts within the recess and on the housing are engageable to provide a recharging current to the rechargeable battery within the housing. The actuating switch is a push button switch spring biased to an off position disposed on a top end wall of the housing for convenient access. The rotary grinding mill has a frusto conical shape and is provided with a plurality of circumferentially spaced alternating trapezoidal lands and trapezoidal flutes. The mill is mounted for rotation in an oppositely tapering frusto conical seat with a minimum clearance space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.