Location History:
- San Francisco, CA (US) (1992)
- Aptos, CA (US) (2009)
- La Selva Beach, CA (US) (2010)
- Watsonville, CA (US) (2013 - 2017)
Company Filing History:
1 out of 1 
5 out of 832,680 Years Active: 1992-2017
Title: The Innovations of Craig D. Calfee
Introduction
Craig D. Calfee is an accomplished inventor based in San Francisco, CA. He holds a total of 6 patents that showcase his innovative contributions to technology and design. His work primarily focuses on advancements in electrical elements and cycling equipment.
Latest Patents
One of Calfee's latest patents is the "Preload anchoring mechanism with top cap adapted to receive subsystems, controls, indicators, and the like." This invention is an apparatus designed to securely house an electrical element within a tubular steerer tube of a frame element. It features a canister for the electrical element, an expandable sleeve, and an expansion bolt that ensures the assembly is firmly secured. The preload cap retains a bearing system, allowing the steerer tube to rotate relative to the frame. Additionally, the design accommodates various components such as lights, switches, and connectors, enhancing the functionality of the system.
Another significant patent is the "Seat post receptacle for power and circuitry elements." This invention involves a cycle seat post with an axial hollow region that includes a retaining structure for securing a power cell cartridge. The design incorporates shoulders for engagement with the cartridge, ensuring stability. A retaining cap secures the cartridge in place while allowing connections to external electronic devices. This innovative approach enhances the integration of power and circuitry within cycling equipment.
Career Highlights
Throughout his career, Craig D. Calfee has worked with various companies, including Calfee Design. His expertise in design and engineering has led to numerous advancements in the cycling industry and beyond.
Collaborations
Calfee has collaborated with notable individuals such as Dezso Molnar and Zoltan Garamszegi, contributing to the development of innovative solutions in his field.
Conclusion
Craig D. Calfee's contributions to technology and design through his patents reflect his commitment to innovation. His work continues to influence the cycling industry and showcases the potential for integrating technology into everyday products.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.