Patent ID: 7748470
Filing Date: 2010-07-06
Classification: A01B

Abstract:
1. An apparatus for trimming grass from around a head portion of a lawn water sprinkler, said apparatus comprising: (a) an elongated generally hollow tubular member closed at a first end thereof, said elongated tubular member having a predetermined length which is longer than a predetermined diameter thereof; (b) a plurality of serrations one of disposed on and formed on a second axially opposed end of said elongated generally hollow tubular member for cutting grass disposed around such head portion of such lawn water sprinkler; (c) an elongated generally hollow housing member at least partially disposed for reciprocal movement within said elongated generally hollow tubular member, said elongated generally hollow housing member is open at a first end thereof, said first end of said elongated generally hollow housing member extendable outwardly relative to said second end of said elongated generally hollow tubular member, said elongated generally hollow housing member having each of a predetermined length and a predetermined cross-sectional shape in a direction transverse to said predetermined length; (d) a guide plate disposed at an axially opposed second end of said elongated generally hollow housing member for closing said second end thereof, said plate having an outer periphery thereof engageable with an inner surface of said elongated generally hollow tubular member for providing a portion of a guiding structure during said reciprocal movement of said elongated generally hollow housing member; (e) an elongated member disposed axially within each of said elongated generally hollow tubular member and said elongated generally hollow tubular member and said elongated generally hollow housing member, said elongated member having each of a first threaded end thereof extending outwardly relative to said first end of said elongated generally hollow tubular member and axially opposed second threaded end thereof disposed within said elongated generally hollow housing member; (f) a first plate disposed within said elongated generally hollow tubular member in abutting engagement with said first end thereof; (g) a second plate disposed within said elongated generally hollow tubular member in abutting engagement with said guiding plate; (h) a biasing member disposed over said elongated member and caged between said first and second plates; and (i) means engageable with said first threaded end of said elongated member for manipulating said apparatus for trimming such grass from around such head portion of such lawn sprinkler.