Patent ID: 11953634
Assignee: SERCEL
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A seismic source for generating seismic waves under water, the seismic source comprising:
an operating head having an operating chamber, a cushion chamber, and plural discharge ports;
a firing chamber attached to the operating head, the firing chamber configured to hold compressed air to be discharged through the plural discharge ports; and
a shuttle assembly having a shaft located within the operating head and the shuttle assembly is configured to prevent the compressed air in the firing chamber to enter the plural discharge ports when in a close state, and to allow the compressed air in the firing chamber to be discharged through the plural discharge ports when in an open state,
wherein the shaft extends in both the operating chamber and the cushion chamber, the shaft has an external surface, and the shaft has a channel having a varying depth, and the channel is formed in the external surface so that air passes from the operating chamber to the cushion chamber, when in the open state, through the channel.