Patent ID: 9614424
Date: 2017-04-04
CPC Classifications: F04B,H02K

Claim:
1. A linear drive, comprising: a first electromagnetic drive device; a second electromagnetic drive device; and a drive piston including an armature carrier formed of a non-magnetic or magnetically passive material, the armature carrier having armature elements fastened thereto, the armature elements being spaced apart from each other along the armature carrier, the armature elements along with the drive piston and the armature carrier being configured to be moved in a first axial direction by the first drive device and a second axial direction by the second drive device, wherein the first drive device and the second drive device are each in the form of a reluctance drive device, and wherein each of the reluctance drive devices has (i) a stator with a coil winding, the coil winding engaging around the armature carrier of the drive piston in a circumferential direction, and (ii) a coil core which has a coil receptacle, open in a radial direction toward the armature carrier of the drive piston, for the coil winding, wherein the coil core of each of the reluctance drive devices is assigned a respective one of the armature elements arranged on the armature carrier of the drive piston, wherein each of the coil cores has two free ends, and wherein each of the armature elements has two armature arms which, in the radial direction, face the two free ends of the respective coil core to which the armature element is assigned.