# US 2019/0168321 A1 · Saw blade having ramp elements with a variable curve geometry > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0168321 A1 - Document ID: US20190168321A1 - Status: Published application - Kind: A1 - Application number: 16/122,403 - Filed: 2018-09-05 - Published: 2019-06-06 - Earliest claimed: 2017-09-05 - Assignees: Simonds Saw, LLC - Applicants: Simonds Saw, LLC - Inventors: Dale G. Petts; Keenan Glover - Web page: https://patentgrep.com/patent/US20190168321A1 ## CPC - B23D 61/123: {Details of saw blade body} - B27B 33/06: Band saw blades - B23D: PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR (making toothed gears or the like B23F; cutting metal by applying heat locally B23K; arrangements for copying or controlling B23Q) - B27B: SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR (saws specially adapted for pruning or debranching A01G3/08; sawing apparatus specially adapted for felling trees A01G23/091; features not restricted to a particular type of wood saw B23D, e.g. attaching saw blades B23D51/00; machine tool frames, beds, pillars or like members, in general B23Q1/01) ## Abstract A saw blade includes a body, saw blade teeth disposed on a first edge of the body, and a ramp element disposed on a second edge of the body, the second edge opposing the first edge. The ramp element is repeated along the longitudinal axis of the body to define a ramp element pattern. The ramp element includes a rise portion disposed proximal to a cutting direction of the saw blade and a relief portion disposed distal to the cutting direction of the saw blade. At least one of the rise portion and the relief portion of the ramp element defines a variable curve geometry. ## Claims ### Claim 1 A saw blade, comprising: a body; saw blade teeth disposed on a first edge of the body; and a ramp element disposed on a second edge of the body, the second edge opposing the first edge, the ramp element repeated along a longitudinal axis of the body to define a ramp element pattern, the ramp element having a rise portion disposed proximal to a cutting direction of the saw blade and a relief portion disposed distal to the cutting direction of the saw blade, at least one of the rise portion and the relief portion of the ramp element defining a variable curve geometry. ### Claim 2 (depends on 1) The saw blade of claim 1, wherein the rise portion defines, as the variable curve geometry, a compound curve having a first rise portion defining a first radius of curvature and a second rise portion defining a second radius of curvature, the first radius of curvature being unequal to the second radius of curvature. ### Claim 3 (depends on 2) The saw blade of claim 2, further comprising a horizontal portion disposed between the rise portion and the relief portion, the horizontal portion substantially parallel to the longitudinal axis of the body. ### Claim 4 (depends on 2) The saw blade of claim 2, wherein the relief portion defines, as the variable curve geometry, compound curve having a first relief portion defining a first radius of curvature and a second relief portion defining a second radius of curvature, the first radius of curvature being unequal to the second radius of curvature. ### Claim 5 (depends on 1) The saw blade of claim 1, wherein the relief portion defines, as the variable curve geometry, compound curve having a first relief portion defining a first radius of curvature and a second relief portion defining a second radius of curvature, the first radius of curvature being unequal to the second radius of curvature. ### Claim 6 (depends on 1) The saw blade of claim 1, wherein the rise portion defines, as the variable curve geometry, a reverse curve having a first portion defining a concave geometry with a first radius of curvature and a second portion defining a convex geometry with a second radius of curvature. ### Claim 7 (depends on 1) The saw blade of claim 1, wherein the relief portion defines, as the variable curve geometry, a reverse curve having a first portion defining a concave geometry with a first radius of curvature and a second portion defining a convex geometry with a second radius of curvature. ### Claim 8 (depends on 1) The saw blade of claim 1, wherein at least one of the rise portion and the relief portion defines, as the variable curve geometry, a convex elliptical geometry having a focal length that changes along a direction opposite to a cutting direction of the saw blade teeth. ### Claim 9 (depends on 1) The saw blade of claim 1, wherein at least one of the rise portion and the relief portion defines, as the variable curve geometry, a concave elliptical geometry having a focal length that changes along a direction opposite to a cutting direction of the saw blade teeth. ### Claim 10 (depends on 1) The saw blade of claim 1, wherein at least one of the rise portion and the relief portion defines, as the variable curve geometry, two or more elliptical geometric elements disposed in consecutive series along a length of the saw blade. ### Claim 11 (depends on 10) The saw blade of claim 10, wherein at least one of the rise portion and the relief portion defines, as the variable curve geometry, a convex elliptical portion disposed in series with, and proximal to, a concave elliptical portion. ### Claim 12 (depends on 10) The saw blade of claim 10, wherein at least one of the rise portion and the relief portion defines, as the variable curve geometry, a concave elliptical portion disposed in series with, and proximal to, a convex elliptical portion. ### Claim 13 (depends on 10) The saw blade of claim 10, wherein at least one of the rise portion and the relief portion defines, as the variable curve geometry, a first convex elliptical portion disposed in series with, and proximal to, a second convex elliptical portion. ### Claim 14 (depends on 10) The saw blade of claim 10, wherein at least one of the rise portion and the relief portion defines, as the variable curve geometry, a first concave elliptical portion disposed in series with, and proximal to, a second concave elliptical portion. ### Claim 15 (depends on 10) The saw blade of claim 10, wherein at least one of the rise portion and the relief portion defines, as the variable curve geometry, a first concave elliptical portion, a second concave elliptical portion, and a third concave elliptical portion, the first concave elliptical portion disposed in series with, and proximal to, the second concave elliptical portion and the second concave elliptical portion disposed in series with, and proximal to, the third concave elliptical portion. ### Claim 16 (depends on 10) The saw blade of claim 10, wherein at least one of the rise portion and the relief portion defines, as the variable curve geometry, a first convex elliptical portion, a second convex elliptical portion, and a third convex elliptical portion, the first convex elliptical portion disposed in series with, and proximal to, the second convex elliptical portion and the second convex elliptical portion disposed in series with, and proximal to, the third convex elliptical portion. ### Claim 17 (depends on 1) The saw blade of claim 1, wherein at least one of the rise portion and the relief portion defines, as the variable curve geometry, a first linear portion defining a first angle of inclination relative to the longitudinal axis of the body and a second linear portion defining a second angle of inclination relative to the longitudinal axis of the body, the first angle of inclination being unequal to the second angle of inclination. ### Claim 18 (depends on 17) The saw blade of claim 17, wherein the second angle of inclination is greater than the first angle of inclination. ### Claim 19 (depends on 1) The saw blade of claim 1, wherein at least one of the rise portion and the relief portion defines, as the variable curve geometry, a linear portion defining an angle of inclination relative to the longitudinal axis of the body and one of a concave elliptical portion and a convex elliptical portion.