Location History:
- San Antonio, TX (US) (1990 - 1992)
- Webster, WI (US) (1982 - 2008)
Company Filing History:
1 out of 1,119 
3 out of 832,880 Years Active: 1982-2008
Title: John T O'Brien: Innovator in Chainsaw Technology and Seismic Applications
Introduction
John T O'Brien is a notable inventor based in San Antonio, TX (US). He holds a total of 4 patents that showcase his innovative contributions to technology, particularly in chainsaw mechanisms and seismic applications.
Latest Patents
One of his latest inventions is the "Apparatus and method for starting a chain saw." This chainsaw starting apparatus includes a frame, a first crank arm, a second crank arm, and a locking mechanism. The design ensures that the frame occupies a fixed position relative to the floor surface. The interconnected crank arms produce rotational movement, enhancing the efficiency of starting the chainsaw. The locking mechanism allows for the releasable attachment of the chainsaw to the frame.
Another significant patent is the "Tubewave damper probe for seismic applications." This innovative device is designed to suppress borehole tubewaves in seismic applications. The damper probe is suspended in a borehole using a cable and consists of a housing, a gas-filled bladder, and multiple valves. The operation of the damper probe is based on a modified Helmholtz resonator effect, where pressure variations within the borehole cause the bladder to expand or contract, effectively managing the seismic waves.
Career Highlights
Throughout his career, John T O'Brien has worked with various organizations, including the Southwest Research Institute. His work has significantly impacted the fields of chainsaw technology and seismic research.
Collaborations
John has collaborated with notable individuals in his field, including his coworker William T Balogh. Their joint efforts have contributed to the development of innovative solutions in their respective areas of expertise.
Conclusion
John T O'Brien's contributions to technology through his patents reflect his dedication to innovation. His work in chainsaw mechanisms and seismic applications demonstrates the importance of inventive thinking in solving practical problems.