Reciprocal blade assembly of electric shaver
US4493149A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1982 |
| Grant date | Jan 15, 1985 |
| Priority date | — |
| Expiry date | Sep 14, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26B19/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Reciprocal blade assembly of electric shaver having means for positively shaving specifically such long beard hair as ones extending along user's face skin or curling which are hard to shave, in addition to ordinary beard hair easy to shave. The means comprises an elongated bent part and slit-shaped hair inlet apertures made in an outer blade of a flexible steel foil fixed as bent semicylindrically to the shaver's head, the bent part being parallel to the longitudinal axis of the blade and the slit-shaped apertures substantially transversing the bent part, and an undulated part corresponding to the bent part and made in respective arcuate cutting blade edges of an inner cutter driven reciprocally to slide at the edges along the inner surface of the outer blade. Other hair inlet apertures made in the outer blade on both sides of the bent part for shaving mainly the ordinary hair are made, for example, to vary in diameter to gradually reduce rigidity against the bending of the outer blade as farther separated sideward from the bent part, whereby intimate contact between the semicylindrically bent outer blade and the inner cutter blade edges is maintained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.