Title: Noise silencer assembly

Abstract: A noise silencer covering an air discharge opening in front of a radiator is used for noise control for an earthmoving vehicle. The silencer encloses a radiator grill which is removably attached to a forward end of an engine enclosure. The noise silencer is provided with upper and lower discharge openings with the open area of the upper opening being larger than that of the lower opening. The walls of the silencer are lined with sound absorbing materials.

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Inventors: Kohriyama, Yoshimasa (Tsukui, JP)

Application Number: 845763
Filing Date: 1977-10-26
Publication_date: 1978-10-24
Assignee: Caterpillar Mitsubishi Ltd. (Tokyo, JP)
Primary Class(es): 180/68.6 181/211
Other Classes:
US Patent Ref:

2728411	Dec, 1955	Pasturczak	180/68.
3812927	May, 1974	Kawamura	180/54.
3857453	Dec, 1974	Buttke et al.	181/204.
3897850	Aug, 1975	Thompson et al.	180/69.

Other Refs: 873,65951-3,73352-105

Apr, 1953	DE
Jan, 1976	JP.
Jan, 1977	JP.

Primary Examiner: Peters, Jr., Joseph F.
Assistant Examiner: Smith, Milton L.
Attorney: Grant; John W.