Patent ID: RE45268

Claim:
A seismic data collection unit comprising: a. a fully enclosed, single case formed of a housing, said case having a wall defining an internal compartment within said housing; b. at least one geophone internally fixed within said housing; c. a clock disposed within said housing; d. a power source disposed within said housing; and e. a seismic data recorder disposed within said housing; f. wherein each of said elements b-e include an electrical connection and all electrical connections between any elements b-e are contained within said housing; and g. wherein said geophone is coupled to said seismic data recorder to permit seismic signals detected by said geophones to be recorded on said seismic data recorder, h. wherein the single case comprises a first plate having a first periphery and a second plate having a second periphery, wherein the plates are joined along their peripheries by a circular wall.