Hammer

Details Hammer Hammer

2006-04-04

2006-04-04

Rada, Rinaldi I. (Department: 3721)

Tool driving or impacting

Impacting devices

With means for rotating tool

C173S104000, C173S122000, C173S212000

Reexamination Certificate

active

07021401

ABSTRACT:
An electrically powered hammer comprising a hammer housing (10,15) with a hollow cylindrical spindle (4) mounted within it and an air cushion hammering mechanism mounted within the spindle for generating repeated impacts on a tool or bit of the hammer which hammering mechanism includes a piston (24). A rotatingly driven intermediate shaft (6) is rotatably mounted in the housing and a wobble drive arrangement (12, 16, 18, 20) reciprocatingly drives the piston (24). The wobble drive arrangement includes a wobble sleeve (12) rotatably mounted on the intermediate shaft (6) and a wobble bearing (14, 16, 18) on the wobble sleeve. A support bearing (46, 42) for the intermediate shaft is mounted on the wobble sleeve forwardly of the wobble bearing assembly. The support bearing (46, 42) comprises a bearing ring (46) and the bearing ring is formed with a peripheral flange which can be fixed to a housing part (10) of the hammer housing (10,15).

REFERENCES:
patent: 4280359 (1981-07-01), Schmid et al.
patent: 5373905 (1994-12-01), Bleicher et al.
patent: 5787996 (1998-08-01), Funfer
patent: 6666284 (2003-12-01), Stirm

Affiliated with

Also associated with

Rating

Hammer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hammer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hammer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3541805