Boots – shoes – and leggings
Patent
1979-09-18
1981-06-09
Ruggiero, Joseph F.
Boots, shoes, and leggings
33125R, 144134D, 144136C, 364562, 409182, G06F 1546, B27C 510, G01B 726
Patent
active
042728215
ABSTRACT:
A digital read-out system for a portable power tool that is adapted to provide a precise digital reading of the depth adjustment of the blade of the tool. The system includes a position encoding device that is coupled to the blade adjustment mechanism of the tool. The encoder provides position feedback information to a microprocessor which is programmed to calculate the amount of blade adjustment made relative to a preselected reference positioned. In the preferred embodiment, a mercury switch is provided which is interrogated by the microprocessor to determine the orientation of the tool so that the orientation of the digital display can be controlled accordingly. In this manner, the display automatically appears rightside up even when the blade adjustment is made with the tool upside down. A mode select switch is also provided for selecting between English and Metric units.
REFERENCES:
patent: 2876662 (1959-03-01), Carlstedt et al.
patent: 3363510 (1968-01-01), Burrows et al.
patent: 3405257 (1968-10-01), Rantsch et al.
patent: 3443479 (1969-05-01), Hawley et al.
patent: 3566827 (1971-03-01), Moseley
patent: 3705400 (1972-12-01), Cordes, Jr.
patent: 3895356 (1975-07-01), Kraus
Black & Decker Inc.
Bloom Leonard
Murphy Edward D.
Ruggiero Joseph F.
Weinstein Harold
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