Distance measuring apparatus
DCFirst Claim
1. A distance measuring apparatus comprising:
- a frame;
a wheel rotatable relative to the frame around a first axis;
the wheel having a peripheral surface that can be rolled against a surface upon which a distance measurement is to be taken;
a counter assembly through which advancement of the distance measuring device can be converted to a distance measurement; and
a scraper assembly comprising a scraping edge that can be selectively fixed in a plurality of different positions relative to the frame so as to be one of (a) adjacent to the wheel, and (b) against the wheel,the scraping edge intercepting foreign matter adhered to the wheel as the wheel is rotated around the first axis to avoid buildup of foreign matter upon the wheel as the distance measuring apparatus is operated,wherein the frame comprises a bracket and the scraper assembly comprises a blade assembly that is separate from and attached to the bracket,wherein the blade assembly comprises an L-shaped body with a mounting leg that is attached to the bracket and a transverse cleaning leg on which the scraping edge is defined,wherein the cleaning leg has a thickness defined between first and second substantially planar surfaces and a free end surface that extends between the first and second planar surfaces,wherein the free end surface is non-orthogonal to the first and second planar surfaces and the scraping edge is defined at a juncture between the first planar surface and the free end surface.
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Abstract
A distance measuring apparatus having a frame and a wheel rotatable relative to the frame around a first axis. The wheel has a peripheral surface that can be rolled against a surface upon which a distance measurement is to be taken. The distance measuring apparatus further has a counter assembly through which advancement of the distance measuring device can be converted to a distance measurement. The scraper assembly has a scraping edge that is one of (a) adjacent to the wheel, and (b) against the wheel. The scraping edge intercepts foreign matter adhered to the wheel as the wheel is rotated around the first axis to avoid buildup of foreign matter upon the wheel as the distance measuring apparatus is operated.
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Citations
29 Claims
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1. A distance measuring apparatus comprising:
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a frame; a wheel rotatable relative to the frame around a first axis; the wheel having a peripheral surface that can be rolled against a surface upon which a distance measurement is to be taken; a counter assembly through which advancement of the distance measuring device can be converted to a distance measurement; and a scraper assembly comprising a scraping edge that can be selectively fixed in a plurality of different positions relative to the frame so as to be one of (a) adjacent to the wheel, and (b) against the wheel, the scraping edge intercepting foreign matter adhered to the wheel as the wheel is rotated around the first axis to avoid buildup of foreign matter upon the wheel as the distance measuring apparatus is operated, wherein the frame comprises a bracket and the scraper assembly comprises a blade assembly that is separate from and attached to the bracket, wherein the blade assembly comprises an L-shaped body with a mounting leg that is attached to the bracket and a transverse cleaning leg on which the scraping edge is defined, wherein the cleaning leg has a thickness defined between first and second substantially planar surfaces and a free end surface that extends between the first and second planar surfaces, wherein the free end surface is non-orthogonal to the first and second planar surfaces and the scraping edge is defined at a juncture between the first planar surface and the free end surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A distance measuring apparatus comprising:
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a frame; a wheel rotatable relative to the frame around a first axis; the wheel having a peripheral surface that can be rolled against a surface upon which a distance measurement is to be taken; a counter assembly through which advancement of the distance measuring device can be converted to a distance measurement; and a scraper assembly comprising a scraping edge that can be selectively fixed in a plurality of different positions relative to the frame so as to be one of (a) adjacent to the wheel, and (b) against the wheel, the scraping edge intercepting foreign matter adhered to the wheel as the wheel is rotated around the first axis to avoid buildup of foreign matter upon the wheel as the distance measuring apparatus is operated, wherein the scraper assembly comprises a blade assembly comprising a cleaning leg on which the scraping edge is defined and that has a thickness and projects in cantilever fashion a distance along a first line, the thickness and distance are such that the cleaning leg can flex by bending so that the scraping edge can be moved generally radially towards and away from the wheel relative to the first axis, the first line non-parallel to the first axis.
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25. A distance measuring apparatus comprising:
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a frame having a bracket with a surface facing in a first direction; a wheel rotatable relative to the frame around a first axis; the wheel having a peripheral surface that can be rolled against a surface upon which a distance measurement is to be taken; a counter assembly through which advancement of the distance measuring device can be converted to a distance measurement; and a scraper assembly comprising a scraping edge that is one of (a) adjacent to the wheel, and (b) against the wheel, the scraping edge intercepting foreign matter adhered to the wheel as the wheel is rotated around the first axis to avoid buildup of foreign matter upon the wheel as the distance measuring apparatus is operated, wherein the scraper assembly comprises a body with a mounting leg that abuts to a bracket surface and a cleaning leg that projects in cantilever fashion from the mounting leg in a line extending generally in the first direction, wherein the scraper assembly comprises a blade assembly comprising a cleaning leg on which the scraping edge is defined and that has a thickness and projects in cantilever fashion a distance along a first line, the thickness and distance are such that the cleaning leg can flex by bending so that the scraping edge can be moved generally radially towards and away from the wheel relative to the first axis, the first line non-parallel to the first axis. - View Dependent Claims (26, 27, 28, 29)
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Specification