Internal-combustion engines – Poppet valve operating mechanism – Rod
Patent
1990-09-21
1991-07-30
Kamen, Noah P.
Internal-combustion engines
Poppet valve operating mechanism
Rod
123195R, F01L 114
Patent
active
050352091
ABSTRACT:
The design and construction of past pushrod retainers have required complex components, sliding relationships and additional assembly time and expense. The present invention overcomes these problems by using a retention shelf attached to a cylinder block. Thus, the components are simple to install, inexpensive to manufacture and do not increase assembly time since there is no adjustment necessary when using the device. The present retention shelf assemblies provide a device which prevents extensive damage to the engine caused by a large separation between the cupped end of the pushrod and the first end of the rocker arm which allows the pushrod to fall into other components, resulting in malfunction of the engine. The device is preassembled to the cylinder block and requires no additional assembly time or alignment when assembling the engine. The device is inexpensive to manufacture and prevents the pushrod from causing damage to the engine should the first end of the rocker arm not be moved to the second operating position causing the pushrod (94) to become free or disconnected.
REFERENCES:
patent: 3195527 (1965-07-01), Eaton
patent: 3963280 (1976-06-01), Irving
patent: 4850315 (1989-07-01), Mallas
patent: 4856467 (1989-08-01), Kronich
patent: 4864983 (1989-09-01), Breitbarth
Braker Brent L.
Heisey J. Barry
Cain Larry G.
Caterpillar Inc.
Kamen Noah P.
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