US 12,442,428 B2
Mass damper device, working tool and working tool holder comprising a mass damper device
Qilin Fu, Solna (SE)
Assigned to MAQ AB, Saltsjo-Boo (SE)
Filed by MAQ AB, Saltsjö-Boo (SE)
Filed on Mar. 5, 2021, as Appl. No. 17/193,153.
Application 17/193,153 is a continuation of application No. PCT/EP2019/073874, filed on Sep. 6, 2019.
Application 17/193,153 is a continuation of application No. PCT/SE2018/050900, filed on Sep. 7, 2018.
Application PCT/EP2019/073874 is a continuation in part of application No. PCT/SE2018/050900, filed on Sep. 7, 2018.
Prior Publication US 2021/0262544 A1, Aug. 26, 2021
Int. Cl. F16F 7/108 (2006.01); B23B 27/00 (2006.01); F16F 15/14 (2006.01)
CPC F16F 7/108 (2013.01) [B23B 27/002 (2013.01); F16F 15/1442 (2013.01); B23B 2250/16 (2013.01); F16F 2222/08 (2013.01); F16F 2224/025 (2013.01); F16F 2226/04 (2013.01); F16F 2228/007 (2013.01); F16F 2232/02 (2013.01); F16F 2232/08 (2013.01); F16F 2234/02 (2013.01); F16F 2236/08 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A mass damper device comprising:
a tubular housing having a first and a second longitudinal end;
a damping mass which is received in the tubular housing with a circumferential clearance and which exhibits a central bore;
a first resilient element and a second resilient element, each of the first and second resilient elements comprising a material having a frequency depending Young's modulus,
a first end closure arranged at the first longitudinal end and exhibiting a central through opening,
a second end closure arranged at the second longitudinal end and exhibiting a central through opening,
a coolant media tube which extends with a radial clearance through the central bore and is received in the central through opening of each end closure, wherein:
the housing and the end closures have cooperating mounting surfaces which define a longitudinal mounting position of the end closures;
the mounting surfaces are arranged such that the first and second resilient elements are compressed to a predetermined compression rate between the damping mass and the end closures, by mounting the end closures, at the longitudinal mounting position, to the housing; and
the housing, the damping mass, the first and the second resilient elements, and the first and the second end closures form an integral module which is arranged to be inserted into and extracted from a working tool or a working tool holder.