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Compression-vacuum action percussive machine
   
Document Number
US Patent 5050687
Issued Date
September 24, 1991
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Abstract
A compression-vacuum action percussive machine is proposed, which has a casing (1) accommodating a tool (7) and a cylinder (2) with a drive piston (3) and a striker (4) having a chamfer (10) on the end face engageable with the tool (7), and also a means for trapping the striker (4), which means is made in the form of a sleeve (11) with an annular groove (13), wherein a resilient ring (14) is mounted. The sleeve (11) has an inner annular rib (15), the diameter of which is smaller than the diameter of the inner wall (12) of the sleeve (11), the annular rib (15) being positioned at the end face of the sleeve (11) facing the striker (4). The inner diameter (d) of the resilient ring (14) is smaller than the diameter (D) of the extension (9) of the striker (4), which extension is situated after the striker chamfer (10).
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Compression-vacuum action percussive machine - US Patent 5050687 Drawing
Drawing from US Patent 5050687
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Number of Claims:
1
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Owner
Published
September 24, 1991
Application Number
07/460,345
Filed
May 14, 1990
US Classification
173/133   173/104 173/135 173/210
Int'l Classification
B25D   17/00   (20060101)   B25D   11/00   (20060101)   B25D   9/04   (20060101)   B25D   17/06   (20060101)   B25D   9/00   (20060101)   B25D   11/04   (20060101)  
Examiner
Assistant Examiner
Attorney/Law Firm
Priority Data
Sep 23, 1988 [SU] 4485925
USPTO Field of Search
173/15   173/16   173/29   173/48   173/108   173/114   173/128   173/104   173/163   173/139   173/135   173/133  
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Claims
Description
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