초록 ▼

A manually operated tool for chipping material from a surface includes a plurality of axially extending needle-type chisels (8) located within a housing (1) and guided in a needle cage (12) positioned within the housing. The needle cage (12) is freely axially displaceable between a stop shoulder (15

A manually operated tool for chipping material from a surface includes a plurality of axially extending needle-type chisels (8) located within a housing (1) and guided in a needle cage (12) positioned within the housing. The needle cage (12) is freely axially displaceable between a stop shoulder (15b) of a guide sleeve (14) and an anvil (17) both of which are axially displaceable within the housing. The guide sleeve (14) is pressed by a compression spring (16) against the anvil (17).

대표청구항 ▼

Manually operated tool for chipping material from a surface comprises a housing 1 extending axially between a leading end and a trailing end, a plurality of axially elongated needle-type chisels (8) each having a leading end and a trailing end with the leading ends projecting from the leading end of

Manually operated tool for chipping material from a surface comprises a housing 1 extending axially between a leading end and a trailing end, a plurality of axially elongated needle-type chisels (8) each having a leading end and a trailing end with the leading ends projecting from the leading end of said housing, a needle cage (12) having a leading end and a trailing end located within said housing, and an anvil (17) having a leading end and a trailing end located within said housing adjacent the trailing end of said cage, said anvil being axially displaceable within said housing against the counteracting force of a compression spring (16) having a leading end and a trailing end and abutting said housing at the leading end thereof, a hammer (29) located within said housing and arranged to strike the trailing end of said anvil (17) and advance said anvil in the axial direction, said hammer (29) being displaceable within said housing in the axial direction of said needle-type chisels (8), said needle cage (12) having a plurality of bores extending therethrough in the axial direction of said chisels, said needle cage being enclosed and guided within an axially extending guide sleeve (14) disposed between said anvil and said compression spring, said compression spring (15) forcing said guide sleeve against the leading end of said anvil, and said needle cage being freely axially displaceable within said guide sleeve between the leading end of said anvil and a stop shoulder (15b) formed at a leading end of said guide sleeve.