Poppet valve spring retainer

Details Poppet valve spring retainer Poppet valve spring retainer

1988-08-25

1989-11-14

Myhre, Charles J.

Internal-combustion engines

Poppet valve operating mechanism

Spring

123188SB, F01L 310

Patent

active

048799785

ABSTRACT:
An engine (10) is provided including a poppet valve (14) for regulating the flow of gases to and from a combustion chamber (13). The poppet valve (14) includes an elongated stem (18). A return spring (20) is connected to the stem (18) and urges the poppet valve (14) perpendicularly toward a valve seat (16). A spring retainer (22) locks onto the stem (18) of the poppet valve (14) to retain the return spring on the poppet valve (14). A central bore (26) is provided in the spring retainer (22) and includes a radially inwardly extending ledge (30). Three equally spaced slots (32) are disposed through the spring retainer (22) for allowing the ledge (30) in the bore (26) to deflect outwardly while the spring retainer (22) is inserted onto the stem (18) of the poppet valve (14). When the spring retainer (22) is moved to an operational position on the stem (18), the ledge (30) snaps underneath a corresponding recessed surface (28) provided in the stem (18) for automatically locking the spring retainer (22) onto the stem (18) of the poppet valve (14).

REFERENCES:
patent: 1775069 (1930-09-01), Finney
patent: 1930894 (1933-10-01), Gorman
patent: 3273856 (1966-09-01), Tauschek
patent: 3612016 (1971-10-01), Jelen

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