2 results about "Left fingers" patented technology

A bolt catch assembly for a firearm lower receiver having a symmetrical and ambidextrous finger pad in an ergonomic location at the front of the trigger-well which operates the catch and release function of the bolt catch. The finger pad moves in a vertical motion; up to catch the bolt, and down to release the bolt. It may be operated from the left or the right finger pad by a left-hand finger or a right-hand finger. The finger pad is affixed to a vertical link which has a tooth at its top end which engages a groove on the edge of the bolt catch to make the bolt catch pivot. The vertical link includes an elongated slot that accommodates a magazine release shaft.

A multi-channel pulse oximeter system is proposed. The system includes a measurement part for measuring PPG signals in a light transmission method in six places on a human body, including both earlobes, both fingers, and both feet, an analysis part for comparatively analyzing the six PPG signals measured by the measurement part, and a result provision part for providing analysis results of the analysis part, wherein the measurement part is configured to include first and second measurement parts respectively mounted on both of the earlobes of the human body, third and fourth measurement parts respectively mounted on a distal end of any one of left fingers and a distal end of any one of right fingers of the human body, and fifth and sixth measurement parts respectively mounted on a left toe and a right toe of the human body, the first to sixth measurement parts measuring the PPG signals.