Scraping or scoring tool专利检索-可剥离涂料油漆与涂料专利检索查询-专利查询网

Scraping or scoring tool

阅读：995发布：2022-01-26

专利汇可以提供Scraping or scoring tool专利检索，专利查询，专利分析的服务。并且A scraping or scoring tool primarily for scoring the surface of wallpaper on walls to be redecorated, so that moisture can penetrate below the surface of the paper when sprayed or steamed on stripping it from the wall. The tool is provided with a curved blade which is mounted transversely at one end of a handle and has teeth along its working edge which lie in a common plane. The handle has a mounting portion which extends at an obtuse angle to the cylindrical axis of the blade so that by tilting the blade with respect to the surface of the wall as the blade is pressed against the wall and drawn across it, the amount of contact of the toothed working edge can be decreased, thereby concentrating the pressure applied to the surface being scored along a smaller portion of the working edge and facilitating the scoring of areas where it is more difficult to penetrate the paint.，下面是Scraping or scoring tool专利的具体信息内容。

权利要求

1. A scraping or scoring tool comprising an elongated handle having an elongated mounting portion at one end thereof with a longitudinal axis, an elongated blade shaped cylindrically along its length to provide concave and convex sides and a working edge extending lengthwise thereof, said blade being formed from flat heavy-gauge metal stock of sufficient width in the direction of its cylindrical axis to render it substantially inflexible; and means rigidly assembling said mounting portion of said handle and said blade with said handle extending from the concave side of said blade and having the longitudinal axis of said mounting portion intersecting the mid-portion of said length of said blade and extending away from said teeth at an obtuse angle to said cylindrical axis of said blade, said blade having a multiplicity of substantially inflexible, relatively uniformly spaced scoring teeth integrally formed along its said working edge and of a length greater than the thickness of said metal stock, the ends of said teeth being coplanar such that when said working edge is placed in contact with a flat work-surface with the cylindrical axis of said blade extending at one angle to said work-surface, all said teeth contact said work-surface, and when said blade is tilted in the direction of its convex side to another angle with respect to said work-surface on its other side, while still in engagement therewith, the proportion of said teeth in contact with said work-surface progressively decreases as the angle of tilt increases.

2. A tool as defined in claim 1 wherein said obtuse angle is about 95* to 110*.

3. A tool as defined in claim 1, wherein the end of each of said scoring teeth is substantially rectangular and is beveled on the convex side of said blade to form a sharp edge on the concave side of said blade.

4. A tool as defined in claim 3, wherein said scoring teeth are formed by providing rectangular notches in the working edge of said blade, the width of each notch being substantially equal to its depth and substantially twice the width of each tooth.

5. A tool as defined in claim 1, wherein said handle is provided with a hand grip extending laterally from said handle near said blade and in a direction away from said teeth.

6. A tool as defined in claim 1, wherein said blade is provided with scoring teeth at each end for scraping in narrow places and has a second working edge extending parallel to but opposite said first-named working edge.

7. A tool as defined in claim 4, wherein said blade is provided with scoring teeth at each end for scraping in narrow places and has a second working edge extending parallel to but opposite said first-named working edge, said second working edge being provided with scoring teeth identical with those on said first-named working edge.

8. A tool as defined in claim 4, wherein said blade has a second working edge extending parallel to said first-named working edge.

9. A tool as defined in claim 1, wherein the plane in which the ends of said scoring teeth are disposed is perpendicular to the cylindrical axis of the blade.

10. A tool as defined in claim 1, wherein said mounting means removably mount said blade on said handle.

说明书全文

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