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US4027388A Expired / Lapsed US ⏱️ 0.0 years remaining

Scraper

Assignee: Fletcher Terry Co LLC
•
Filing: 1975-10-14
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Granted: 1977-06-07
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Expires: 1995-10-14
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Abstract

Abstract A thin rectangular blade of flat configuration has its two longer edges rolled or burnished to form alternatively usable sharpened edges. The blade is held in a structure which includes a handle having a concave surface against which the blade is adapted to be clamped by a convex clamping member in order to end the initially flat blade into an arcuate configuration such that the exposed scrapping edge is curved in order to reduce the likelihood that its edge portions will gouge a workpiece or the like. The blade is oriented at an angle with respect to the longitudinal axis of the handle, and the radius of curvature of the bent blade is approximately twice the length of its longer edges. A screw fastener holds the clamping member to the handle and clearance is provided for the reserve, or unused scraper edge of the blade when the blade is so clamped. In one version the screw fastener is threadably received in the handle and in another version, a wingnut is utilized on the screw fastener to achieve the clamping action.

Inventors

  • 👤 Arthur T. Fletcher

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 14:24
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/02; A47L13/08

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 184 words
A scraper comprising a generally rectangular flat blade having at last two sharpened and rolled or burnished scraping edges defined along the opposed rectilinear longer sides, means for retaining said blade in an arcuate stressed configuration with one of said edges exposed and having an intermediate segment adapted to contact a flat surface to be scraped before the blades end portions, said blade retaining means including an elongated handle with a concave blade receiving receptacle at one end said receptacle having a relieved portion to accommodate the edge opposite said exposed edge, a clamping member of generally U-shaped configuration and defining a convex surface defined on the inner face of one leg of the U for engaging said blade, and an upper marginal portion defined by the web of the U, and the other leg of the U received in a locating groove defined in the handle, and a screw fastener extending through aligned openings in said clamping member and said handle to clamp said blade in said arcuate configuration, said blade being oriented at an obtuse angle with respect to the handle axis.
Claim 2
Dependent Claim 184 words
A scraper comprising a generally rectangular flat blade having at last two sharpened and rolled or burnished scraping edges defined along the opposed rectilinear longer sides, means for retaining said blade in an arcuate stressed configuration with one of said edges exposed and having an intermediate segment adapted to contact a flat surface to be scraped before the blades end portions, said blade retaining means including an elongated handle with a concave blade receiving receptacle at one end said receptacle having a relieved portion to accommodate the edge opposite said exposed edge, a clamping member of generally U-shaped configuration and defining a convex surface defined on the inner face of one leg of the U for engaging said blade, and an upper marginal portion defined by the web of the U, and the other leg of the U received in a locating groove defined in the handle, and a screw fastener extending through aligned openings in said clamping member and said handle to clamp said blade in said arcuate configuration, said blade being oriented at an obtuse angle with respect to the handle axis.

References Cited (Backward Citations)

US1434914A Cited
US1447039A Cited
US1768537A Cited
US2116282A Cited
US2259662A Cited
US2306083A Cited
US2312809A Cited
US2494455A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-06-06 1980-12-06 1981-06-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-06-06 1984-12-06 1985-06-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-06-06 1988-12-06 1989-06-07 $7700.00 Window Closed / Lapsed

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