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Publication numberUS2750664 A
Publication typeGrant
Publication dateJun 19, 1956
Filing dateNov 16, 1953
Priority dateNov 16, 1953
Publication numberUS 2750664 A, US 2750664A, US-A-2750664, US2750664 A, US2750664A
InventorsMerlo Mario P
Original AssigneeMerlo Mario P
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Indicator for razors
US 2750664 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

J1me 1956 M. P. MERLO I 2,750,664


Mg zia R Marla;


United States Patent INDICATOR FOR RAZORS Mario P. Merlo, Tarzana, Calif.

Application November 16, 1953, Serial No. 392,172

1 Claim. (Cl. 30-34) The present invention relates broadly to indicators and more specifically to an indicator which may be incorporated in a razor of the safety type, for indicating to the user of the razor the number of times that a blade has been used. The present invention has no relationship to tensioning indicating devices for razor blades used in the so-called safety razors.

The inventor has found that the average razor blade as now constructed and sharpened is capable of being used for more than one shave, and the indicator is adapted to show the number of times that the blade has been so used.

An object of the invention is to provide an indicator for razors of the safety type which is attractive in appearance, efficient in operation, may be readily incorporated on existing types of safety razors, of pleasing appearance, and which does not necessitate major changes in razor construction.

In the drawing:

Figure l is a perspective view of a razor incorporating the invention;

Figure 2 is a top-plan view of a razor showing the invention; and

Figure 3 is a sectional view on the line 3-3 of Figure 2.

Referring to to the drawing, I have shown in the figures a conventional razor of the type known in the industry as the Schick. A razor of this type includes a head 1, a handle 2 secured to the head, the head being so constituted and arranged as to receive a blade 3. In this type of razor there is a shank 4 between the head and the handle, and I utilize this shank to incorporate my invention. Thus, on the upper flat side of said shank ice I mount a disk 5, for rotation. This disk bears indicia, such as the numerals 6, and the said disk may be secured to the shank in any convenient manner, such as by passing a threaded screw 7 through the center of the disk and the shank 4 and through lock and frictional washers 8, of which there may be more than one, the entirety being secured by a nut 9 carried by the screw 7. Other means may be utilized for securing the disk 5 to the shank, as is self-evident. The shankon its face carries an arrow 10 or other indication which points towards the disk and specifically to a numeral on said disk.

As stated, various means may be utilized for frictionally holding the disk 5 in a defined position, such as by notching the edge of the disk in alignment with the numerals together with a spring detent carried by the shank 4, the detent having snap engagement with the notches.

The operation, uses and advantages of the invention are as follows: When a new blade 3 is inserted in the head 1 the disk 5 is rotated so that the arrow points to the numeral 1 and upon completion of the shave the disk is rotated by the finger until the numeral 2 is beneath the arrow. Thus, the user of the razor will at all times know how many times the blade has been used for shaving. The number of numerals may be varied, the four numerals being used for illustrative purposes only.

I claim:

The combination with a razor having a head, a handle and a shank having a flat side interconnecting the head and the handle, of: pointer means on said shank, a disc on the flat side of said shank, said disc having a diameter substantially equal to the maximum transverse width of said shank, friction means on the opposite side of said shank, and means interconnecting the said disc, shank and friction means, said disc bearing indicia adapted to be successively positioned in alignment with the said pointer means when the disc is rotated to indicate the number of times a blade has been used.

References Cited in the file of this patent UNITED STATES PATENTS 1,966,193 Weber July 10, 1934 2,316,600 Kuhnl et a]. Apr. 13, 1943 OTHER REFERENCES 9256/1885 Great Britain Aug. 1, 1885

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1966193 *Oct 18, 1932Jul 10, 1934Nicolaus Weber ErhardRazor
US2316600 *Sep 11, 1941Apr 13, 1943Magazine Repeating Razor CoBlade magazine
GB188509256A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3137939 *Jun 6, 1962Jun 23, 1964Waldeck George ASafety razor marker
US4208984 *Oct 12, 1978Jun 24, 1980Norman GlanzmanRazor usage indicator
US4422237 *Feb 25, 1982Dec 27, 1983The Gillette CompanyRazor handle
US5119557 *Jan 3, 1991Jun 9, 1992John KaikoShave counter
US5388331 *Jan 28, 1994Feb 14, 1995Doroodian-Shoja SiamakWear indicator for a disposable razor
US5998431 *Apr 16, 1998Dec 7, 1999Gillette Canada Inc.Sustained-release matrices for dental application
US6185822Jul 1, 1999Feb 13, 2001The Gillette CompanyShaving system
US6295733Aug 3, 1994Oct 2, 2001Warner-Lambert CompanyChangeable color shaving aid
US6442839Sep 13, 2000Sep 3, 2002The Gillette CompanyShaving system
US7100283Oct 18, 2004Sep 5, 2006Greg GrdodianShaving system
US7338664Sep 15, 2003Mar 4, 2008The Gillette CompanyColor changing matrix as wear indicator
US20020000041 *Jul 12, 2001Jan 3, 2002Siamak Doroodian-ShojaDisposable razor wear indicator
US20040134010 *Sep 15, 2003Jul 15, 2004The Gillette Company, A Delaware CorporationColor changing matrix as wear indicator
CN103889667A *Aug 29, 2012Jun 25, 2014任向荣Apparatus and method for detecting life of shaving blade, and shaving blade
WO1983002915A1 *Feb 23, 1983Sep 1, 1983Gillette CoA razor handle
WO1998010903A1 *Sep 16, 1997Mar 19, 1998Neill Edward ODevices for indicating usage of an article
U.S. Classification30/41.7, 30/62, 30/537
International ClassificationB26B21/40
Cooperative ClassificationB26B21/4087, B26B21/40
European ClassificationB26B21/40H1, B26B21/40