Location History:
- Meadeville, PA (US) (1996)
- Boulder, CO (US) (1978 - 2005)
Company Filing History:
3 out of 7 
1 out of 1 
3 out of 832,812 Years Active: 1978-2005
Title: The Innovative Mind of David B Call
Introduction
David B Call is a notable inventor based in Boulder, Colorado. He holds a total of seven patents, showcasing his creativity and technical expertise in various fields. His inventions reflect a commitment to enhancing everyday experiences through innovative design and functionality.
Latest Patents
Among his latest patents is the articulated pickup truck camper/trailer. This recreational vehicle combines a pickup truck with a camper that is releasably mounted on it. The design includes an accessway between the cab of the truck and the camper, along with a trailer that communicates with the camper through an articulated passage. This unique feature allows occupants to move between the camper and trailer while the vehicle is in motion, enhancing the overall travel experience.
Another significant invention is the controlled weight-lowering device. This device enables individuals to descend from a building at a predetermined rate of descent. It can be permanently attached to a building or used as a portable solution. The device features an outer bracket securely attached to the building's interior, with a cylindrical winding drum that rotates around a shaft. A rope attached to a harness allows the individual to descend safely. The device's inner gear pump and valve mechanism regulate the rate of descent by controlling the flow of oil within the gear set chamber.
Career Highlights
David has worked with various companies throughout his career, including A.I.R., Inc. His contributions to these organizations have been instrumental in developing innovative solutions that address real-world challenges.
Collaborations
Throughout his career, David has collaborated with talented individuals such as Peter F MacDoran and Kenneth L Gold. These partnerships have fostered a creative environment that has led to the development of groundbreaking inventions.
Conclusion
David B Call exemplifies the spirit of innovation through his inventive contributions and collaborations. His patents not only demonstrate his technical skills but also his dedication to improving the functionality and safety of everyday products.