Fluid and elastomer damper

Details Fluid and elastomer damper Fluid and elastomer damper

1997-08-04

2000-07-25

Butler, Douglas C.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

267219, 267 35, 2671412, 26714013, 18832221, F16F 910

Patent

active

06092795&

ABSTRACT:
A fluid damper to damp unwanted vibration between a first member (21) and a second member (23, 23'), such as between a rotor blade and hub within a helicopter rotor system. According to a first aspect, the fluid damper (20) includes an outer member (22), first and second inner members (24, 24'), first and second elastomeric elements (26, 26'), a hollow (28), a divider (30) subdividing hollow (28) into first (32) and second (32') operating chambers, a connector (34) interconnecting first (24) and second (24') inner members, a fluid passageway (36) interconnecting operating chambers (32, 32'), a fluid (38) contained within said passageway (36) and operating chambers (32, 32'), and a volume compensator (40) including a compensator chamber (42) housed within one of first (24) and second (24') inner members. In another aspect, an annular bubble trap (58) is formed in a wall portion (62) of the operating chamber (32) to focus any air bubbles into a fill port (54) during fill. In another aspect, a first chamber fill port (54) and a second chamber fill port (54') each interconnect with the annular bubble trap (58) to aid in filling the chamber (32') and removing air bubbles therefrom. In yet another aspect, a first fill port (54) interconnects to the operating chambers (32, 32') and a second fill port (56) interconnects to the compensator chamber (42) for allowing separate fill of the compensator (42) and operating chambers (32, 32').

REFERENCES:
patent: 2421585 (1947-06-01), Thiry
patent: 3403899 (1968-10-01), Plume
patent: 4236607 (1980-12-01), Halwes et al.
patent: 4566677 (1986-01-01), Le Pierres
patent: 4588174 (1986-05-01), Konishi
patent: 4811919 (1989-03-01), Jones
patent: 4817925 (1989-04-01), Sprang et al.
patent: 5004215 (1991-04-01), Aubry et al.
patent: 5127607 (1992-07-01), McGuire
patent: 5178241 (1993-01-01), Aubry
patent: 5197692 (1993-03-01), Jones et al.
patent: 5251883 (1993-10-01), Simon et al.
patent: 5316442 (1994-05-01), Mouille
patent: 5374039 (1994-12-01), Schmidt et al.
patent: 5413320 (1995-05-01), Herbst
patent: 5501434 (1996-03-01), McGuire
patent: 5540549 (1996-07-01), McGuire
patent: 5762295 (1998-06-01), McGuire et al.
patent: 5816372 (1998-10-01), Carlson et al.
"Understanding Hydraulic Mounts for Improved Vehicle Noise, Vibration and Ride Qualities," Flower, Lord Corporation, LL-2166, 1985.
Fluidlastic.RTM. Technology, Lord Aerospace, PB-6310, Apr. 1991.
Fluidlastic.RTM. Dampers and Isolators for Vibration Control Helicopters, McGuire, Lord Corporation, 1LL-6502, 1994.

Affiliated with

Also associated with

Rating

Fluid and elastomer damper does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fluid and elastomer damper, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluid and elastomer damper will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1331260