Q.e.d. Environmental Systems, Inc.

Graco Minnesota Inc.

Hunter C Anstadt

Mark T Weinberger

David B Kaminski

Daniel O Hayes

William C Allen

Michael K Lindquist

A landfill well pump is pneumatically powered to pump landfill liquid from a landfill well. The landfill well pump includes a choke on the pneumatic exhaust of the pump. The choke regulates flow the driving gas out of the landfill pump, maintaining pneumatic pressure in the pump and metering inflow of landfill liquid into the pump.

Landfill pump having metered cycling

A soil sampler includes a base and a plunger insertable into the base. The depth in which the plunger is inserted into the base determines the size of the sample collected by the soil sampler. The depth in which the plunger is inserted into the base can switch between a first size and a second size, allowing the user to collect different sample sizes using a single soil sampler. The soil sample that is collected can then be ejected from the soil sampler by shifting the plunger to an eject position relative to the base in which the plunger can shift further into the base to eject the soil sample.

Soil sampler

Soil sampler tool

Growing community of inventors

Ann Arbor, MI, United States of America

Hunter C Anstadt