Valve guide insert

Details Valve guide insert Valve guide insert

1992-04-14

1993-10-05

Cross, E. Rollins

Internal-combustion engines

Valve

Valve head cooperates with manifold

F01L 308

Patent

active

052495558

ABSTRACT:
A thin-walled valve guide insert for lining and relining a valve guide of an internal combustion engine includes opposing ends each having a tapered insertion section thereon. The tapered insertion section defines a reduced outer diameter to facilitate installing the insert into a valve guide bore have a nonchamfered opening, and further defines a reduced inner diameter so that the insert has a substantially continuous wall thickness throughout its length and thus maintains the structural integrity of the insert from end to end. In the preferred embodiment, the valve guide insert is made of a phosphor bronze material of about 0.018 inch thickness or less, and includes a lengthwise slit therein. The insert is sprung open longitudinally along the slit and must be radially compressed so that the insert defines a sufficiently small outer diameter so that it can be axially installed in a press-fit condition into the valve guide bore of the engine. Both ends of the insert are formed with the tapered insertion section so that the insert can be positioned without regard to which end is directed toward the valve guide. Also disclosed is a tool for inserting the insert into the guide valve, the tool including an outwardly tapered junction adapted to spread one of the tapered insertion sections of the insert into longitudinal alignment with the insert to reduce the tendency to crush same from end forces exerted on the insert while installing the insert into the valve guide. Still further a process is disclosed for forming the guide valve insert with ends having tapered insertion sections thereon.

REFERENCES:
patent: 3531134 (1970-09-01), Kammeraad
patent: 3599992 (1971-08-01), Kammeraad
patent: 3764204 (1973-10-01), Kammeraad
patent: 3809046 (1974-05-01), Kammeraad
patent: 3828415 (1974-08-01), Kammeraad et al.
patent: 3828756 (1974-08-01), Kammeraad et al.
patent: 3829105 (1974-08-01), Kammeraad
patent: 4022583 (1977-05-01), Kammeraad
patent: 4103662 (1978-08-01), Kammeraad
patent: 4185368 (1980-01-01), Kammeraad
patent: 4231693 (1980-11-01), Kammeraad
patent: 4414723 (1983-11-01), Kammeraad et al.
patent: 4417376 (1983-11-01), Kammeraad et al.
patent: 4465040 (1984-08-01), Pelizzoni
patent: 4502696 (1985-03-01), Kammeraad
patent: 4573340 (1986-03-01), Kammeraad
patent: 4768479 (1988-09-01), Kammeraad
patent: 4822061 (1989-04-01), Kammeraad
Exhibit A is a catalog dated 1986 published by K-Line Industries, assignee of the present application, which on pp. 8-27 discloses various valve guide inserts, insert installation procedures, and equipment for reworking valve guides and for installing valve guide inserts.

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-996412