Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Frictionally engaging sides of opening in work
Patent
1994-04-19
1995-03-21
Howell, Daniel W.
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Frictionally engaging sides of opening in work
408 835, B23B 4112
Patent
active
053990587
ABSTRACT:
A spindle with a self-centering grip, or collet, and one or more pilots that the grip may engage. The grip has radially expandable and contractible portions for engaging a pilot between them. The pilot is inherently centered in the spindle because the gripping forces are equally distributed around the pilot. Each pilot consists of two adjacent, coaxial cylindrical guide portions of different diameters. A set of such pilots can be provided where each guide portion of each pilot has a diameter that is different from that of every other guide portion of the pilots in the set. The guide portion diameters may correspond to the diameters of the valve guides of particular engines or may increase incrementally over a predetermined range. A pilot can thus be selected from the set to fit the valve guides of a particular engine.
REFERENCES:
patent: 1825007 (1931-09-01), McNaught
patent: 3461775 (1969-08-01), Devanney et al.
patent: 3728940 (1973-04-01), Peterson
patent: 5017062 (1991-05-01), Leroux et al.
Serdi Product Brochure, "La Difference," for Valve Seat Machining Device and Pilots.
LandOfFree
Reversible pilot for valve seat machining devices does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reversible pilot for valve seat machining devices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reversible pilot for valve seat machining devices will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1145336