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US 12,589,980 B2Granted
Hand tool with slip resistant tip
AssigneeMilwaukee Electric Tool Corporation
InventorsHonesto D. Camposagrado, Clinton L. Cull
Life of this patent
Estimating the term…
Abstract
A tool, such as a pry bar including a textured tip is shown. In one embodiment, the textured tip includes a plurality of projections and a plurality of grooves. Various textured tip embodiments are configured to increase friction/gripping with a workpiece, thereby increasing a pry force applied to the workpiece before the pry bar slips and/or loses contact with the workpiece.
Claims21
A pry bar comprising:
- a handle;
- a shaft coupled to and extending from the handle along a longitudinal axis of the pry bar;
- and
- an engagement end extending from the shaft, the engagement end comprising:
- a tip surface;
- and
- a textured surface section positioned on the tip surface, the textured surface section comprising:
- a plurality of protrusions, wherein each protrusion includes a plurality of edges that together define a raised upper surface of the protrusion;
- and
- a plurality of grooves, wherein each groove extends along at least one of the plurality of protrusions;
- wherein, when the textured surface section is engaged with a workpiece, one or more of the plurality of grooves receives a portion of the workpiece such that the grooves resist movement of the workpiece relative to the engagement end during use of the pry bar;
- wherein a length of the textured surface section is defined between the upper front edge of the engagement end and a rear edge of the textured surface section;
- and
- wherein the length of the textured surface section is between 10 mm and 20 mm.
11 more elements
A pry bar comprising:
- a handle;
- a shaft coupled to and extending from the handle;
- and
- a tip extending from the shaft, the tip comprising:
- a tip surface;
- an upper front edge extending along the tip surface;
- a lower front edge;
- and
- a textured surface section positioned on the tip surface, the textured surface section comprising:
- a protrusion, wherein the protrusion includes a plurality of edges that together define a raised surface of the protrusion;
- and
- a groove including a lowermost point, wherein the groove extends along at least one of the plurality of edges of the protrusion;
- wherein a height of the tip is defined between the upper front edge and the lower front edge, and wherein a height of the protrusion is defined between the raised surface of the protrusion and the lowermost point of the groove;
- wherein a ratio of the height of the tip to the height of the protrusion is greater than 6;
- wherein the groove has a depth defined between the raised surface of the protrusion and the lowermost point of the groove and wherein the groove has a width defined between opposing edges of adjacent protrusions;
- and
- wherein a ratio of the width of the groove to the depth of the groove is greater than 2.
14 more elements
A pry bar comprising:
- a handle;
- a shaft coupled to and extending from the handle along a longitudinal axis of the pry bar;
- and
- a tip extending from the shaft, the tip comprising:
- a tip surface;
- and
- a textured surface section positioned on the tip surface and extending along the longitudinal axis, the textured surface section comprising:
- a plurality of protrusions, wherein each of the protrusions includes a plurality of edges that together define a raised surface of the protrusion, the raised surface defining an area;
- and
- a groove including a lowermost point, wherein the groove extends along at least one of the plurality of protrusions;
- wherein the groove has a depth defined between the raised surface of the protrusion and the lowermost point of the groove and wherein the groove has a width defined between opposing edges of adjacent protrusions;
- wherein a width of the tip is defined between opposing edges of the tip, and wherein a ratio of the width of the tip to the area is greater than 5.
9 more elements
Dependencies are inferred from the claim text.