Automatic chain sharpening device mounted on a chain saw

Details Automatic chain sharpening device mounted on a chain saw Automatic chain sharpening device mounted on a chain saw

1998-06-25

1999-12-28

Payer, Hwei-Siu

Metal tools and implements, making

Saw-making or furbishing device or machine

Chain saw sharpener

76 37, 83833, 83834, B23D 6316, B27B 1702

Patent

active

060066296

ABSTRACT:
A saw chain is automatically sharpened during use by causing top sides of the cutter links to be pressed against a stationary abrasive block when the saw chain is running around a rim type sprocket. The cutting link includes a cutting edge, and a depth gauge recessed radially from the cutting edge by a distance defining the cutting depth. The generally cylindrical outer periphery of the drive sprocket has raised steps or ramps formed thereon which lift the front end of the cutter links relative to the rear ends, thereby allowing a sufficiently large cutting depth to be achieved without locating the depth gauge far in front of the front rivet. This reduces vibration and instability of the saw chain when sawing.

REFERENCES:
patent: 2821097 (1958-01-01), Carlton
patent: 3144059 (1964-08-01), Oehrli
patent: 3147644 (1964-09-01), Oehrli
patent: 3170497 (1965-02-01), Ehlen et al.
patent: 3176733 (1965-04-01), Dobbertin
patent: 3189064 (1965-06-01), Frederickson
patent: 3269431 (1966-08-01), Ehlen
patent: 3502122 (1970-03-01), Silvon
patent: 3534638 (1970-10-01), Van Ourkerk
patent: 3921490 (1975-11-01), Dolata et al.
patent: 4492030 (1985-01-01), Beerens
patent: 4593591 (1986-06-01), Beerens

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