Cutlery – Razors – Knockdown and/or folding
Patent
1995-01-03
1996-11-19
Payer, Hwei-Siu
Cutlery
Razors
Knockdown and/or folding
30 50, B26B 2154
Patent
active
055750680
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
The invention concerns a safety razor of the sort stated in the introduction to claim 1. Such safety razors are known from the descriptions to DK precept No. 144460 and U.S. Pat. No. 3,786,563.
It is a disadvantage of the conventional safety razors that the razor blades have been designed with only one cutting edge on one side, meaning that the blade cassettes have to be exchanged frequently. Furthermore, all conventional safety razors have a complicated construction.
This invention serves the purpose of procuring a safety razor of the sort mentioned in the introduction, where the razor blades are provided with a cutting edge on both sides, and a blade cassette, which can be turned inside the cassette holder, thus a blade cassette will last twice as long as that of any conventional safety razor.
According to the invention this purpose is achieved through the fact that the safety razor mentioned in the introduction is peculiar as to the characterizing part stated in claim 1.
Through this a more simple construction of the safety razor will also be reached, and there will be a decrease in tool costs.
Claim 2 concerns special locking devices through which the cap section of a blade cassette can be locked to the base section.
Claim 3 concerns a special construction of both the blade cassette with exterior mating surfaces and the cassette holder with interior control surfaces, through which a blade cassette can be locked unambiguously in the cassette holder, and claim 4 concerns special devices through which a blade cassette can be locked in position in proportion to the cassette holder.
A detailed explanation of the invention shall follow referring to the drawing on which
FIG. 1 shows a sectional view of a safety razor as to the invention mounted with a blade cassette in the cassette holder.
FIG. 2 shows on a larger scale and in perspective a cassette holder for the safety razor shown in FIG. 1.
FIG. 3 shows on a larger scale and in perspective a blade cassette for a safety razor as to the invention.
FIG. 4 shows a separated blade cassette.
FIG. 5 shows a rear view of the blade cassette.
FIG. 6 shows a cut through a blade cassette.
FIG. 7 shows a cut through a cassette holder for a safety razor as to the invention, and
FIG. 8 shows a cut through a cassette holder, in which a blade cassette has been mounted.
The safety razor has, as it is seen from FIG. 1 a handle 1, which at the top ends in a cassette holder 2 in which a demountable blade cassette has been mounted.
As shown on FIG. 4 and 6 a blade cassette 3 consists of a cap section 4 and a base section 5. Between the cap section and the base section a front-lying, lengthy razor blade 6 with a cutting edge 7 in front; lying behind it and parallel to it a rear lengthy razor blade 8, which on its frontside has a cutting edge 9, have been mounted. The blades are held in a certain mutual distance b, which e.g. could be 0.5 mm, through a distance piece 10. The body part 4 has been designed with a contact face 11, being in contact with the skin during shaving. The front edge 12 of the contact face 11 has been somewhat drawn back a e.g. 0.63 mm in comparison to the edge 9 of the blade 8. The contact face 11 has been positioned in a lower level than a plane through the cutting edges 7 and 9, and could e.g. form an angle of 23.degree. with the plane of the blade 8. The base section 5 protrudes in front of the cutting edge 7 of the blade 6 and has on its front a longitudinal edge or bearer 13, which on top has a wavy contact face 14, which is in contact with the skin during shaving. The contact face 14 has also been placed in a level, which is lower than that of a plane through the cutting edges 7 and 9. Behind the bearer 13 there is a base section 5 with a first row of cut-outs 15, and in some distance from there a second row of cut-outs 16. The cut-outs 15 and 16 are separated by a longitudinal edge 17 and the cut-outs 15,16 are separated in a crosswise direction by the edges 18.
The blades 6 and 8 have been placed in a certain mutual distance c between t
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patent: 3777396 (1973-12-01), Simonetti
patent: 3783510 (1974-01-01), Dawidowicz et al.
patent: 3786563 (1974-01-01), Dorion, Jr. et al.
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patent: 4275498 (1981-06-01), Ciaffone
patent: 4407067 (1983-10-01), Trotta
patent: 4980974 (1991-01-01), Radcliffe
patent: 5133131 (1992-07-01), Hoffman
Almer Charles W.
Payer Hwei-Siu
Warner-Lambert & Company
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