|Publication number||US2750664 A|
|Publication date||Jun 19, 1956|
|Filing date||Nov 16, 1953|
|Priority date||Nov 16, 1953|
|Publication number||US 2750664 A, US 2750664A, US-A-2750664, US2750664 A, US2750664A|
|Inventors||Merlo Mario P|
|Original Assignee||Merlo Mario P|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (3), Referenced by (16), Classifications (8)|
|External Links: USPTO, USPTO Assignment, Espacenet|
J1me 1956 M. P. MERLO I 2,750,664
INDICATOR FOR RAZORS F iled Nov. 16, 1955 INVENTOR,
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.
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
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US1966193 *||Oct 18, 1932||Jul 10, 1934||Nicolaus Weber Erhard||Razor|
|US2316600 *||Sep 11, 1941||Apr 13, 1943||Magazine Repeating Razor Co||Blade magazine|
|GB188509256A *||Title not available|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3137939 *||Jun 6, 1962||Jun 23, 1964||Waldeck George A||Safety razor marker|
|US4208984 *||Oct 12, 1978||Jun 24, 1980||Norman Glanzman||Razor usage indicator|
|US4422237 *||Feb 25, 1982||Dec 27, 1983||The Gillette Company||Razor handle|
|US5119557 *||Jan 3, 1991||Jun 9, 1992||John Kaiko||Shave counter|
|US5388331 *||Jan 28, 1994||Feb 14, 1995||Doroodian-Shoja Siamak||Wear indicator for a disposable razor|
|US5998431 *||Apr 16, 1998||Dec 7, 1999||Gillette Canada Inc.||Sustained-release matrices for dental application|
|US6185822||Jul 1, 1999||Feb 13, 2001||The Gillette Company||Shaving system|
|US6295733||Aug 3, 1994||Oct 2, 2001||Warner-Lambert Company||Changeable color shaving aid|
|US6442839||Sep 13, 2000||Sep 3, 2002||The Gillette Company||Shaving system|
|US7100283||Oct 18, 2004||Sep 5, 2006||Greg Grdodian||Shaving system|
|US7338664||Sep 15, 2003||Mar 4, 2008||The Gillette Company||Color changing matrix as wear indicator|
|US20020000041 *||Jul 12, 2001||Jan 3, 2002||Siamak Doroodian-Shoja||Disposable razor wear indicator|
|US20040134010 *||Sep 15, 2003||Jul 15, 2004||The Gillette Company, A Delaware Corporation||Color changing matrix as wear indicator|
|CN103889667A *||Aug 29, 2012||Jun 25, 2014||任向荣||Apparatus and method for detecting life of shaving blade, and shaving blade|
|WO1983002915A1 *||Feb 23, 1983||Sep 1, 1983||Gillette Co||A razor handle|
|WO1998010903A1 *||Sep 16, 1997||Mar 19, 1998||Neill Edward O||Devices for indicating usage of an article|
|U.S. Classification||30/41.7, 30/62, 30/537|
|Cooperative Classification||B26B21/4087, B26B21/40|
|European Classification||B26B21/40H1, B26B21/40|