Abstract: An elastomeric mount for a thrust bearing shoe comprising a piston fluidly operative in a platform cavity, the piston isolated and sealed from the cavity by an elongated elastomeric bearing-seal. The piston lockingly engages a thrust shoe with a compound dovetail connection whereby the shoe may be installed and removed after the piston and elastomeric bearing-seal are bonded into the platform cavity.

Abstract: A rubber bladder enclosed in a pressure tank having a valved opening is inflated by bladder inflation means to a pressure corresponding to the hydrostatic or other pressure of the environment to be sampled. Once the apparatus is located in the environment which is to be sampled, means for slowly exhausting the gas from the bladder, possibly a pump, are activated whereby hydrostatic or other pressure collapses the bladder and a fluid sample quiescently fills the pressure tank through the valved opening. When sample collection is complete, the valved opening, which is locally or remotely controllable, is closed and the sample is retrieved. Residual or ullage gas in the bladder maintains the sample at the pressure at which it was collected. Bladder inflating means are again employed after apparatus retrieval to initiate sample flow from the tank to an examining device or instrument at the same pressure that exists in the sampler.