Patent · US Active

Adjustment safeguard for a set screw on a carburetor

US9273637B2 · kind B2 · utility

1Cited by

2References

15Claims

0Family size

Assignee

Andreas Stihl AG & Co. KG · DE

Inventors

Patrick Levien · Großenhain, DE
Achim Baumhauer · Schwäbisch Gmünd, DE
Walter Gernhard · Weingarten, DE

Key dates

Filing date	Sep 24, 2013
Grant date	Mar 1, 2016
Priority date	—
Expiry date	Jan 30, 2034

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2003/105
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An adjustment safeguard for a set screw on a carburetor includes a cap held non-rotatably on the head of the set screw. The cap is surrounded by a coaxially positioned wall sleeve fixed to the housing. A rotation stop is fixed to the housing to limit the angle of rotation of the cap in the sleeve in the rotational direction of the set screw. A through-opening in the cap permits inserting a tool into an engagement opening in the head of the set screw to avoid destruction by introducing too much torque into the adjustment safeguard. The form and opening width of the through-opening is limited by the use of a metal material such that a tool larger than the adjustment tool is not able to be inserted through the through-opening into the head of the set screw. The engagement opening is flexible to limit a maximum allowable adjustment torque.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.