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US 7,325,712 B2Granted
Electrical drive-in tool having two component flywheel
AssigneeHilti Aktiengesellschaft
InventorUlrich Schiestl
Life of this patent
Estimating the term…
Abstract
An electrical drive-in tool includes a driving ram (13) displaceable in a guide (12), and a motor-driven drive flywheel (32) for driving the driving ram (13) and having a first component forming at least a circumferentially arranged rim and formed of a metal selected from a group consisting of steel and alloyed iron, and a second component formed of a material having a density greater than a density of the metal the first component is formed of.
Claims6
An electrical drive-in tool for driving in fastening elements, comprising:
- a guide (12);
- a driving ram (13) displaceable in the guide (12);
- and
- a drive unit (30) including:
- a drive flywheel (32) having:
- a hub;
- a first component forming at least a circumferentially arranged rim and formed of steel having a density from about 7 g/cm3 to about 8.4 g/cm3;
- a second component forming an annular body positioned between the circumferentially arranged rim and the hub of the drive flywheel (32), with the second component being formed of a material having a density greater than 8.5 g/cm3 and also greater than at least 1 g/cm3 of the density of the steel of which the first component is formed;
- a motor (31) for rotating the drive flywheel (32);
- and wherein the second component is formed of metal selected from the group consisting of lead, copper, nickel, tin and silver.
7 more elements
A drive flywheel for driving a driving ram of a drive-in tool, comprising:
- a hub;
- a first component forming at least a circumferentially arranged rim and formed of steel having a density from about 7 g/cm3 to about 8.4 g/cm3;
- a second component forming an annular body positioned between the circumferentially arranged rim and the hub, with the second component being formed of a material having a density greater than 8.5 g/cm3 and also greater than at least 1 g/cm3 of the density of the steel of which the first component is formed;
- and wherein the second component is formed of metal selected from the group consisting of lead, copper, nickel, tin and silver.
1 more element
Dependencies are inferred from the claim text.