Pneumatic excavator and methods of use
US12241223B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2024 |
| Grant date | Mar 4, 2025 |
| Priority date | — |
| Expiry date | Jan 18, 2044 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02F3/902
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A pneumatic excavator for delivering pulsed compressed air includes an actuator; a controller valve; a flow valve; a barrel defining an outlet of the excavator; and a pulse control line extending between the controller valve and a port downstream from an egress of the flow valve. As compressed air flows through the egress of the flow valve, the pulse control line is pressurized and shifts the controller valve to an actuated position, causing the compressed air from the actuator to close the flow valve, thus preventing the air flow from passing through a primary flow passage and through the outlet. The pulse control line being no longer pressurized by the air flow, then causes the controller valve to move to an unactuated position to cause compressed air from the actuator open the flow valve and permit the air flow through the outlet and again pressurize the pulse control line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.