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US 6,796,888 B2Granted
Power tool having a receptacle for securing a tool
AssigneeC. & E. Fein GmbH
InventorMichael Jasch
Life of this patent
Estimating the term…
Abstract
A power tool having a receptacle for securing a tool to a drive shaft thereof is diclosed. The receptacle comprises a receiving opening, preferably being arranged on the tool. The receiving opening engages a securing section preferably being provided in a raised fashion on the drive shaft of the power tool, thereby effecting a positive fit therebetween. The receiving opening has a cross section comprising a plurality of bulges displaced outwardly from a center axis of the drive shaft.
Claims50
A power tool comprising
- a motor-driven drive shaft having a longitudinal axis and having a free end;
- a securing section provided on said free end of said drive shaft for engaging a receiving opening provided on said tool;
- said securing section comprising six rounded tips arranged at even radial distances from said longitudinal axis, at angular intervals of 60° between each other, each pair of adjacent tips being connected by arch-shaped lateral flanks forming recesses between said tips, said lateral flanks extending from said pair of adjacent tips toward said longitudinal axis and converging in a common apex.
A power tool comprising
- a motor-driven drive shaft having a longitudinal axis and having a free end;
- a securing section provided on said free end of said drive shaft for engaging a receiving opening provided on said tool;
- said securing section comprising a plurality of bulges arranged at a radial distance from said longitudinal axis, said bulges being connected by lateral flanks forming recesses between said bulges;
- wherein said securing section comprises at least three bulges, each of said bulges forming a pair of bulges with each adjacent bulge, each said pair of adjacent bulges being continuously connected by lateral flanks extending from said pair of adjacent bulges toward said longitudinal axis and converging in a common apex;
- and
- wherein said securing section comprises at least six bulges, each pair of adjacent bulges being connected by lateral flanks extending from said pair of adjacent bulges toward said longitudinal axis and converging in a common apex.
3 more elements
A power tool comprising
- a motor-driven drive shaft having a longitudinal axis and having a free end;
- a securing section provided on said free end of said drive shaft for engaging a receiving opening provided on said tool;
- said securing section comprising a plurality of bulges arranged at a radial distance from said longitudinal axis, said bulges being connected by lateral flanks forming recesses between said bulges;
- wherein said securing section comprises at least three bulges, each of said bulges forming a pair of bulges with each adjacent bulge, each said pair of adjacent bulges being continuously connected by lateral flanks extending from said pair of adjacent bulges toward said longitudinal axis and converging in a common apex;
- and
- wherein said bulges are configured as rounded tips.
3 more elements
A power tool comprising
- a motor-driven drive shaft having a longitudinal axis and having a free end;
- a securing section provided on said free end of said drive shaft for engaging a receiving opening provided on said tool;
- said securing section comprising a plurality of bulges arranged at a radial distance from said longitudinal axis, said bulges being connected by lateral flanks forming recesses between said bulges;
- wherein said securing section comprises at least three bulges, each of said bulges forming a pair of bulges with each adjacent bulge, each said pair of adjacent bulges being continuously connected by lateral flanks extending from said pair of adjacent bulges toward said longitudinal axis and converging in a common apex;
- and
- wherein said lateral flanks are arch-shaped.
3 more elements
A power tool comprising
- a motor-driven drive shaft having a longitudinal axis and having a free end;
- a securing section provided on said free end of said drive shaft for engaging a receiving opening provided on said tool;
- said securing section comprising a plurality of bulges arranged at a radial distance from said longitudinal axis, said bulges being connected by lateral flanks forming recesses between said bulges;
- wherein said securing section comprises at least three bulges, each of said bulges forming a pair of bulges with each adjacent bulge, each said pair of adjacent bulges being continuously connected by lateral flanks extending from said pair of adjacent bulges toward said longitudinal axis and converging in a common apex;
- and
- wherein said lateral flanks are circular arc-shaped.
3 more elements
A power tool comprising
- a motor-driven drive shaft having a longitudinal axis and having a free end;
- a securing section provided on said free end of said drive shaft for engaging a receiving opening provided on said tool;
- said securing section comprising a plurality of bulges arranged at a radial distance from said longitudinal axis, said bulges being connected by lateral flanks forming recesses between said bulges;
- wherein said securing section comprises at least three bulges, each of said bulges forming a pair of bulges with each adjacent bulge, each said pair of adjacent bulges being continuously connected by lateral flanks extending from said pair of adjacent bulges toward said longitudinal axis and converging in a common apex;
- and
- a threaded blind hole arranged on said drive shaft, and further comprising a securing screw adapted for screwing into said threaded blind hole for securing a tool on said securing section.
3 more elements
A power tool comprising,
- a motor-driven drive shaft having a longitudinal axis and having a free end;
- a securing section provided on said free end of said drive shaft for engaging a receiving opening provided on said tool;
- said securing section comprising at least three bulges arranged at a radial distance from said longitudinal axis, each of said bulges forming a pair of bulges with each adjacent bulge, each said pair of adjacent bulges being continuously connected by lateral flanks forming recesses between said bulges and extending from said pair of adjacent bulges toward said longitudinal axis and converging in a common apex;
- a threaded blind hole arranged on said drive shaft;
- and
- a securing screw adapted for screwing into said threaded blind hole for securing a tool on said securing section;
- wherein said drive shaft further comprises a retaining flange having an outer diameter being larger than an outer diameter of said securing section, thereby allowing fixation of a tool on said securing section by pressing said tool against said retaining flange when tightening said securing screw.
4 more elements
A power tool comprising,
- a motor-driven drive shaft having a longitudinal axis and having a free end;
- a securing section provided on said free end of said drive shaft for engaging a receiving opening provided on said tool;
- said securing section comprising at least three bulges arranged at a radial distance from said longitudinal axis, each of said bulges forming a pair of bulges with each adjacent bulge, each said pair of adjacent bulges being continuously connected by lateral flanks forming recesses between said bulges and extending from said pair of adjacent bulges toward said longitudinal axis and converging in a common apex;
- a threaded blind hole arranged on said drive shaft;
- a securing screw adapted for screwing into said threaded blind hole for securing a tool on said securing section;
- and
- a clamping flange configured detachable from said drive shaft and having a central opening for inserting a threaded portion of said securing screw therethrough, said clamping flange further comprising an annular protrusion on its side facing said drive shaft, said annular protrusion being dimensioned for pressing a tool against said retaining flange when tightening said securing screw.
4 more elements
A tool comprising a receiving opening defining a longitudinal axis extending therethrough, said receiving opening comprising a plurality of bulges arranged at a radial distance from said longitudinal axis, said bulges being connected by lateral flanks forming recesses between said bulges, wherein said securing section comprises at least six bulges, each pair of adjacent bulges being connected by lateral flanks extending from said pair of adjacent bulges toward said longitudinal axis and converging in a common apex.
A tool comprising
- a receiving opening defining a longitudinal axis extending therethrough, said receiving opening comprising a plurality of bulges arranged at a radial distance from said longitudinal axis, said bulges being connected by lateral flanks forming recesses between said bulges;
- wherein said securing section comprises at least three bulges, each of said bulges forming a pair of bulges with each adjacent bulge, each said pair of adjacent bulges being continuously connected by lateral flanks extending from said pair of adjacent bulges toward said longitudinal axis and converging in a common apex;
- and
- wherein said lateral flanks are arch-shaped.
1 more element
A tool comprising
- a receiving opening defining a longitudinal axis extending therethrough, said receiving opening comprising a plurality of bulges arranged at a radial distance from said longitudinal axis, said bulges being connected by lateral flanks forming recesses between said bulges;
- wherein said securing section comprises at least three bulges, each of said bulges forming a pair of bulges with each adjacent bulge, each said pair of adjacent bulges being continuously connected by lateral flanks extending from said pair of adjacent bulges toward said longitudinal axis and converging in a common apex;
- and
- wherein said lateral flanks are circular arc-shaped.
1 more element
An adapter for securing a tool having a receiving opening to a securing section of a drive shaft of a power tool, said adaoter comprising:
- an adapter disk comprising a longitudinal axis and having a first side facing said power tool and a second side facing said tool;
- a recess arranged on said first side, and having a certain shape for engaging said securing section of said power tool;
- a raised section arranged on said second side, said raised section having a shape being different from the shape of said recess, said raised section comprising a plurality of bulges arranged at a radial distance from said longitudinal axis, said bulges being connected by lateral flanks forming recesses between said bulges;
- and
- wherein said securing section comprises at least six bulges, each of said bulges forming a pair of bulges with each adjacent bulge, each said pair of adjacent bulges being connected by lateral flanks extending from said pair of adjacent bulges toward said longitudinal axis and converging in a common apex.
2 more elements
An adapter for securing a tool having a receiving opening to a securing section of a drive shaft of a power tool, said adapter comprising:
- an adapter disk comprising a longitudinal axis and having a first side facing said power tool and a second side facing said tool;
- a recess arranged on said first side, and having a certain shape for engaging said securing section of said power tool;
- a raised section arranged on said second side, said raised section having a shape being different from the shape of said recess, said raised section comprising a plurality of bulges arranged at a radial distance from said longitudinal axis, said bulges being connected by lateral flanks forming recesses between said bulges;
- wherein said raised section comprises at least three bulges, each of said bulges forming a pair of bulges with each adjacent bulge, each said pair of adjacent bulges being continuously connected by lateral flanks extending from said pair of adjacent bulges toward said longitudinal axis and converging in a common apex;
- and
- wherein said bulges are configured as rounded tips.
3 more elements
An adapter for securing a tool having a receiving opening to a securing section of a drive shaft of a power tool, said adapter comprising:
- an adapter disk comprising a longitudinal axis and having a first side facing said power tool and a second side facing said tool;
- a recess arranged on said first side, and having a certain shane for engaging said securing section of said power tool;
- a raised section arranged on said second side, said raised section having a shape being different from the shape of said recess, said raised section comrisi a plurality of bulges arranged at a radial distance from said longitudinal axis, said bulges being connected by lateral flanks forming recesses between said bulges;
- wherein said raised section comprises at least three bulges, each of said bulges forming a pair of bulges with each adjacent bulge, each said pair of adjacent bulges being continuously connected by lateral flanks extending from said pair of adjacent bulges toward said longitudinal axis and converging in a common apex;
- and
- wherein said lateral flanks are arch-shaped.
3 more elements
An adapter for securing a tool having a receiving opening to a securing section of a drive shaft of a power tool, said adapter comprising:
- an adapter disk comprising a longitudinal axis and having a first side facing said tool;
- a recess arranged on said first side, and having a certain shape for engaging said securing section of said power tool;
- a raised section arranged on said second side, said raised section having a shape being different from the shape of said recess, said raised section comprising a plurality of bulges arranged at a radial distance from said longitudinal axis, said bulges being connected by lateral flanks forming recesses between said bulges;
- wherein said raised section comprises at least three bulges, each of said bulges forming a pair of bulges with each adjacent bulge, each said pair of adjacent bulges being continuously connected by lateral flanks extending from said pair of adjacent bulges toward said longitudinal axis and converging in a common apex;
- and
- wherein said lateral flanks are circular arc-shaped.
3 more elements
An adapter for securing a tool having a receiving opening to a securing section of a drive shaft of a power tool, said adapter comprising:
- an adapter disk comprising a longitudinal axis and having a first side facing said power tool and a second side facing said tool;
- a recess arranged on said first side, and having a certain shape for engaging said securing section of said power tool;
- a raised section arranged on said second side, said raised section having a shape being different from the shape of said recess, said raised section comprising a plurality of bulges arranged at a radial distance from said longitudinal axis, said bulges being connected by lateral flanks forming recesses between said bulges;
- wherein said raised section comprises at least three bulges, each of said bulges forming a pair of bulges with each adjacent bulge, each said pair of adjacent bulges being continuously connected by lateral flanks extending from said pair of adjacent bulges toward said longitudinal axis and converging in a common apex and
- wherein said bulges have a circular arc shape having a certain radius, the ratio between said first diameter and said radius being approximately 30 to 46.
2 more elements
An adapter for securing a tool having a receiving opening to a securing section of a drive shaft of a power tool, said adapter comprising:
- an adapter disk comprising a longitudinal axis and having a first side facing said power tool and a second side facing said tool;
- a recess arranged on said first side and having a certain shape, said recess comprising a plurality of bulges arranged at a radial distance from said longitudinal axis, said bulges being connected by lateral flanks forming recesses between said bulges;
- and
- a raised section arranged on said second side and having a shape being different from the shape of said recess;
- wherein said recess comprises at least six bulges, each of said bulges forming a pair of bulges with each adjacent bulge, each said pair of adjacent bulges being connected by lateral flanks extending from said pair of adjacent bulges toward said longitudinal axis and converging in a common apex.
2 more elements
An adapter for securing a tool having a receiving opening to a securing section of a drive shaft of a power tool, said adapter comprising:
- an adapter disk comprising a longitudinal axis and having a first side facing said power tool and a second side facing said tool;
- a recess arranged on said first side and having a certain shape, said recess comprising a plurality of bulges arranged at a radial distance from said longitudinal axis, said bulges being connected by lateral flanks forming recesses between said bulges;
- and
- a raised section arranged on said second side and having a shane being different from the shape of said recess;
- wherein said recess comprises at least three bulges, each of said bulges forming a pair of bulges with each adjacent bulge, each said pair of adjacent bulges being continuously connected by lateral flanks extending from said pair of adjacent bulges toward said longitudinal axis and converging in a common apex;
- and
- wherein said bulges are configured as rounded tips.
4 more elements
An adapter for securing a tool having a receiving opening to a securing section of a drive shaft of a power tool, said adapter comprising:
- an adapter disk comprising a longitudinal axis and having a first side facing said power tool and a second side facing said tool;
- a recess arranged on said first side and having a certain shape, said recess comprising a plurality of bulges arranged at a radial distance from said longitudinal axis, said bulges being connected by lateral flanks forming recesses between said bulges;
- and
- a raised section arranged on said second side and having a shape being different from the shape of said recess;
- wherein said recess comprises at least three bulges, each of said bulges forming a pair of bulges with each adjacent bulge, each said pair of adjacent bulges being continuously connected by lateral flanks extending from said pair of adjacent bulges toward said longitudinal axis and converging in a common apex;
- and
- wherein said lateral flanks are arch-shaped.
4 more elements
An adapter for securing a tool having a receiving opening to a securing section of a drive shaft of a power tool, said adapter comprising:
- an adapter disk comprising a longitudinal axis and having a first side facing said power tool and a second side facing said tool;
- a recess arranged on said first side and having a certain shape, said recess comprising a plurality of bulges arranged at a radial distance from said longitudinal axis, said bulges being connected by lateral flanks forming recesses between said bulges;
- and
- a raised section arranged on said second side and having a shape being different from the shape of said recess;
- wherein said recess comprises at least three bulges, each of said bulges forming a pair of bulges with each adjacent bulge, each said pair of adjacent bulges being continuously connected by lateral flanks extending from said pair of adjacent bulges toward said longitudinal axis and converging in a common apex;
- and
- wherein said lateral flanks are circular arc-shaped.
4 more elements
An adapter for securing a tool having a receiving opening to a securing section of a drive shaft of a power tool, said adapter comprising:
- an adapter disk comprising a longitudinal axis and having a first side facing said power tool and a second side facing said tool;
- a recess arranged on said first side and having a certain shape, said recess comprising a plurality of bulges arranged at a radial distance from said longitudinal axis, said bulges being connected by lateral flanks forming recesses between said bulges;
- and
- a raised section arranged on said second side and having a shape being different from the shape of said recess;
- wherein said recess comprises at least three bulges, each of said bulges forming a pair of bulges with each adjacent bulge, each said pair of adjacent bulges being continuously connected by lateral flanks extending from said pair of adjacent bulges toward said longitudinal axis and converging in a common apex;
- and
- wherein said bulges have, in part, a circular arc shape having a certain radius, the ratio between said first diameter and said radius being approximately 30 to 46.
4 more elements
An adapter for securing a tool having a receiving opening to a securing section of a drive shaft of a power tool, said adapter comprising:
- an adapter disk comprising a longitudinal axis and having a first side facing said power tool and a second side facing said tool;
- a recess arranged on said first side and having a certain shape, said recess comprising a plurality of bulges arranged at a radial distance from said longitudinal axis, said bulges being connected by lateral flanks forming recesses between said bulges;
- and
- a raised section arranged on said second side and having a shape being different from the shape of said recess;
- wherein said recess comprises at least three bulges, each of said bulges forming a pair of bulges with each adjacent bulge, each said pair of adjacent bulges being continuously connected by lateral flanks extending from said pair of adjacent bulges toward said longitudinal axis and converging in a common apex;
- and
- a threaded blind hole arranged on said drive shaft, and further comprising a securing screw having a threaded portion adapted for screwing into said threaded blind hole for securing a tool on said securing section.
4 more elements
An adapter for securing a tool having a receiving opening to a securing section of a drive shaft of a power tool, said adapter comprising:
- an adapter disk comprising a longitudinal axis and having a first side facing said power tool and a second side facing said tool;
- a recess arranged on said first side and having a certain shape, said recess comprising a plurality of bulges arranged at a radial distance from said longitudinal axis, said bulges being connected by lateral flanks forming recesses between said bulges;
- and
- a raised section arranged on said second side and having a shape being substantially identical to the shape of said recess, but being angularly displaced with respect thereto.
1 more element
A power tool comprising
- a motor-driven drive shaft having a longitudinal axis and having a free end;
- a securing section provided on said free end of said drive shaft for engaging a receiving opening provided on said tool;
- said securing section comprising six rounded tips arranged at even radial distances from said longitudinal axis, at angular intervals of 60° between each other, each pair of adjacent tips being connected by arch-shaped lateral flanks forming recesses between said tips, said lateral flanks extending from said pair of adjacent tips toward said longitudinal axis and converging in a common apex, wherein said bulges are configured to at least partially fit within the receiving opening.
Dependencies are inferred from the claim text.