US 12,280,469 B2
Wireless abrasive blasting remote deadman assembly
Douglas P. Nodurft, Jefferson, LA (US); and Michael Z Sherwood, Houston, TX (US)
Filed by Douglas P. Nodurft, Jefferson, LA (US); and Michael Z Sherwood, Houston, TX (US)
Filed on Jun. 24, 2021, as Appl. No. 17/357,675.
Prior Publication US 2023/0211462 A1, Jul. 6, 2023
Int. Cl. B24C 9/00 (2006.01); B24C 3/06 (2006.01)
CPC B24C 9/00 (2013.01) [B24C 3/06 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An abrasive blasting remote assembly, comprising:
a shroud having a shroud cover removably coupled to a shroud base, the shroud cover defining a depressor aperture, the shroud base defining at least one button aperture through which a switch-on button extends, the shroud base having a bottom wall adapted to removably engage a blasting hose, the bottom wall having a proximal end opposite a distal end;
a deadman lever pivotally connected to the shroud cover, the deadman lever having a proximal end and a distal end, the distal end adapted to be grasped by a hand of a user to pitovally move the deadman lever between a released position and a closed operating position, the deadman lever having a deadman switch engaging member;
a momentary deadman switch disposed between the shroud cover and the shroud base, the momentary deadman switch sealably fitted within the depressor aperture, wherein the deadman switch engaging member depresses the momentary deadman switch when the deadman lever is in the closed operating position, wherein the deadman switch engaging member releases the momentary deadman switch when the deadman lever is in the released position;
a wireless transmitter circuit board disposed within the shroud and electrically connected to the momentary deadman switch, wherein the wireless transmitter circuit board is adapted to send a wireless operational signal to a blasting pot wireless receiver to activate airflow through the blasting hose from a blasting pot configured for the movement of abrasive media through the blasting hose when the deadman lever depresses the momentary deadman switch in the closed operating position,
wherein the wireless transmitter circuit board is adapted to drop the wireless operational signal to the blasting pot wireless receiver to stop the airflow through the blasting hose when the deadman lever releases the momentary deadman switch in the released position; wherein, the wireless transmitter circuit board is electrically connected to the switch-on button, wherein the wireless transmitter circuit board is adapted to send a wireless abrasive-on signal to the blasting pot wireless receiver to activate a feed of abrasive media from the blasting pot into the blasting hose adapted for abrasive media blasting operations when the user depresses the switch-on button;
a battery electrically connected to the wireless transmitter circuit board and disposed between the shroud cover and the shroud base;
a spring biased interlock safety switch having a planar body pivotally connected to a top surface of the distal end of the bottom wall of the shroud base, said spring biased interlock safety switch biased to extend transversely from the top surface to form an obstruction to the closed operating position of the deadman lever, said spring biased interlock safety switch being pivotable against such bias to clear said obstruction.