US 12,012,714 B2
Vibration isolators and tampers
Benjamin J. Paske, Slinger, WI (US)
Assigned to M-B-W, Inc., Slinger, WI (US)
Filed by M-B-W, Inc., Slinger, WI (US)
Filed on Jun. 18, 2020, as Appl. No. 16/904,767.
Application 16/904,767 is a division of application No. 15/869,923, filed on Jan. 12, 2018, granted, now 10,781,566.
Application 15/869,923 is a division of application No. 14/715,162, filed on May 18, 2015, abandoned.
Prior Publication US 2020/0318307 A1, Oct. 8, 2020
Int. Cl. E02D 3/046 (2006.01); F16F 3/04 (2006.01)
CPC E02D 3/046 (2013.01) [F16F 3/04 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A vibration isolator for use with a percussion mechanism configured to receive pressurized air, the vibration isolator comprising:
a sleeve having a first sleeve end and a second sleeve end;
a shaft that is reciprocated in the sleeve, the shaft having a first shaft end configured to receive the pressurized air and an opposite second shaft end configured to couple to the percussion mechanism and dispense the pressurized air to the percussion mechanism such that the pressurized air flows through the shaft, wherein the first sleeve end is closer than the second sleeve end to the first shaft end, and wherein the second sleeve end is closer than the first sleeve end to the second shaft end;
a first spring surrounding the shaft such that the shaft extends inside the first spring, the first spring positioned between the first shaft end and the first sleeve end; and
a second spring surrounding the shaft such that the shaft extends inside the second spring, the second spring positioned between the second shaft end and the second sleeve end and spaced apart from the first spring;
wherein the first spring and the second spring are configured to reduce transmission of vibrations to the sleeve; and
a first cap coupled to the first shaft end such that the first spring is bound between the first cap and the first sleeve end;
a second cap coupled to the second shaft end such that the second spring is bound between the second cap and the second sleeve end;
a first bellows extending between the first cap and the first sleeve end to thereby cover the first spring; and
a second bellows extending between the second cap and the second sleeve end to thereby cover the second spring.