String Trimmer Patent Diagram - Engine, Shaft, and Cutting Head Assembly #3098930 (License: Personal Use)

This technical drawing illustrates a handheld string trimmer with a curved shaft (12), an upper engine housing (14), an auxiliary loop handle (10), and a rotating cutting head (16) at the base. Reference numerals indicate critical mechanical interfaces, such as the drive shaft coupling and guard assembly, typical in utility tool patents. The diagram emphasizes structural integration for ergonomic operation and safety compliance.

Used in patent documentation, engineering manuals, or product development pages to explain mechanical design; targets inventors, manufacturers, and technical researchers seeking prior art or component-level understanding.