Resources Contact Us Home
Friction brake

Image Number 3 for United States Patent #4346791.

An improved brake for a wheel mounted on a spindle is of the type which includes a housing secured to the spindle with a plurality of brake discs carried by the housing for relative rotation therewith. A plurality of reaction plates are carried by the hub of the wheel for relative rotation therewith and the discs and plates are intervened in an alternating fashion to define a pack. The housing has a central bore defined by an interior cylindrical surface and a radially, inwardly extending annular wall. A piston has a tubular portion with a cylindrical outer surface and a radially, outwardly extending wall with an annular surface thereon. The piston is axially, slidably mounted in the bore with the annular wall, the interior cylindrical surface, the exterior cylindrical surface and the annular surface defining an expandable chamber between the bore and the piston. A first, generally U-shaped expandable seal is in the chamber and seated against the annular wall of the bore with a pair of lips making sliding, sealing contact with the cylindrical surfaces. A similar second generally U-shaped expandable seal is in the chamber and seated against the annular surface of the piston to also make sliding, sealing contact with the cylindrical surfaces. Hydraulic fluid is selectively introduced to and discharged from the chamber to produce selective movement of the piston axially relative to the bore to cause it to produce a compressive force on the pack.

  Recently Added Patents
Method and system for phase-sensitive magnetic resonance imaging
Changing a system clock rate synchronously
Spacers for insulated glass units
System and method for enhancing buyer and seller interaction during a group-buying sale
Single-pass Barankin Estimation of scatterer height from SAR data
User-initiated quality of service modification in a mobile device
Vending machine
  Randomly Featured Patents
Tire with tread having continuous rib
Opening and closing control mechanism for project window
Pitcher with lid
Self-supporting facade component in sandwich construction
Disk drive assembly station
Drip chamber spike
Push tab vial assembly and methods
Bar code reader
Methods and apparatuses for fast power control of signals transmitted on a multiple access channel
Food casing presizing device