Resources Contact Us Home
Dual stage dampers for vehicles suspensions

Image Number 4 for United States Patent #7963377.

Dampers for vehicle suspensions include a housing comprising a tube attached to a wheel axle of a vehicle and a piston rod extending from a piston within the tube and attached to the vehicle body. The piston divides the tube into first and second chambers. In order to damp responses when minor smooth road imperfections impart low force excitations to the wheel of the vehicle, a fluid bypass passageway in the form of a sleeve is positioned around the tube and overlies the piston. This provides second stage quasi-ideal damping at low force excitations to the wheels and thus to the wheel axles of the vehicle. The sleeve communicates with the first and second chambers through metered orifices or valves. As low force excitations from smooth road imperfections displace fluid within the tube through the metered orifices or valves, the orifices damp responses to the low force excitations, thereby smoothing the ride of the vehicle. The fluid bypass passageway facilitates calibrating the damper to respond at least close to an empirically obtained quasi-ideal damper response with respect to the low force excitations.

  Recently Added Patents
Managing wear leveling and garbage collection operations in a solid-state memory using linked lists
Resource capacity monitoring and reporting
Method and system for reduction of quantization-induced block-discontinuities and general purpose audio codec
Live-attenuated compositions for bacterial infections
Stable file system
Nucleotide sequence coding for variable regions of .beta. chains of human T lymphocyte receptors, corresponding peptide segments and the diagnostic and therapeutic uses
Soybean variety XB51J12
  Randomly Featured Patents
Image forming apparatus with cleaning member to remove toner from transfer roller
Recreational vehicle discharge pipe coupler
Recombinant alpha-fetoprotein for treating and diagnosing cancers
Method and apparatus for encryption
Torch lighter for cigar
Iron golf club head with straight, horizontal recess
Slurry mixing apparatus with dry powder conveyer
Color-changing lamp for vehicle
N-substituted azoles for combating insects, arachnids and nematodes