Patent ID: 11891891
Assignee: GEODYNAMICS, INC.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 8:
9. A chain of a plural of non-addressable switch devices comprising:
the plural of the non-addressable switch devices electrically connected to each other through an electrical line; and
plural downhole tools, each downhole tool of the plural downhole tools hosting a corresponding non-addressable switch device of the plural of the non-addressable switch devices, wherein each non-addressable switch device of the plural of the non-addressable switch devices includes,
a first switch configured to make an electrical connection between the electrical line and another non-addressable switch device of the chain of the plural of the non-addressable switch devices;
a second switch configured to make an electrical connection between a corresponding detonator and the electrical line; and
a processor Pa connected to the first and second switches and configured to close and open the first and second switches,
wherein the processor Pa is configured to not use a digital address, and
wherein the processor Pa is configured to perform one of plural functions based on a corresponding pulse received along the electrical line.