Patent ID: 11903339
Assignee: nan
Field: Other special machines (Mechanical engineering)
Classification: CPC A | IPC A

Claim 4:
5. The cutting head device of claim 1, wherein said spool including two blind flexible trimmer line guides disposed within one of said two flanges, wherein each of said two blind flexible trimmer line guides is comprised of one external flexible trimmer line guide section and one semi-circular inner flexible trimmer line guide section, wherein said external flexible trimmer line guide sections are parallel to each other in a non-radial direction while crossing through said one of said two flanges and each of said semi-circular inner flexible trimmer line guide sections is disposed within said spool thrust surface tangentially and in unobstructed communication with each of said external flexible trimmer line guide sections, wherein each of said semi-circular inner flexible trimmer line guide sections having a shallow floor, and said each external flexible trimmer line guide section having an open window disposed within said one of said two flanges, and said each semi-circular inner flexible trimmer line guide section having an open window disposed over said spool thrust surface and wherein said spool thrust surface in cooperation with a threaded coupler thrust face to seal said open windows for compressing ends of said flexible trimmer line for retention within said spool hollow cylindrical core.