Construction of power transmitting device for internal combustion engine

• US 4,373,480 A
• Filed: 03/10/1980
• Issued: 02/15/1983
• Est. Priority Date: 01/17/1980
• Status: Expired due to Term

• Current Assignee: Yanmar Diesel Engine Co., Ltd. (Yanmar Holdings Co., Ltd.)
• Original Assignee: Yanmar Diesel Engine Co., Ltd. (Yanmar Holdings Co., Ltd.)
• Inventors: Usui, Kazuto, Shikata, Mitsuo
• Primary Examiner(s): Feinberg, Craig R.
• Application Number:
  US06/128,965
• Time in Patent Office: 1,072 Days
• Field of Search: 123/195 R, 123/195 A, 123/90.31, 123/41.31, 123/41.11, 123/41.65, 474/84, 474/86, 403/370, 403/371-372
• US Class Current: 123/195.00A
• CPC Class Codes: F01P 1/06 Arrangements for cooling other engine or machine parts
• CPC Class Codes: F02B 2275/06 Endless member is a belt
• CPC Class Codes: F02B 67/06 driven by means of chains, belts, or like endless members
• CPC Class Codes: Y10T 403/7056 Threaded actuator

Abstract

A power transmission device for internal combustion engine including a timing belt pulley for a timing belt which drives cam shaft and so forth, and a pulley for V belt for driving auxiliary machineries such as cooling fan, the timing belt pulley and the pulley for V belt being attached to an end portion of the engine crank shaft. One of these pulleys is fixed directly to the engine crank shaft, while the other is fixed to the first-mentioned pulley which is fixed to the crank shaft.

Claims

1. A power transmitting device for an internal combustion engine, said device comprising:

(a) a crankshaft having a tapered end portion;

(b) a timing belt pulley mounted on said crankshaft adjacent to said tapered end portion;

(c) a transmission shaft having first shoulder means spaced radially outward at one end thereof, wherein said power take out pulley includes second should means and wherein said transmission shaft is fixedly connected to said take out pulley with said first shoulder means engaging said second shoulder means; and

(d) a power take-out pulley mounted by fixing it in position on said crankshaft on the tapered end portion thereof;

wherein the timing belt pulley is fixed to the power take-out pulley by fixing the power take-out pulley to the tapered end portion of the crankshaft and then fixing the timing pulley to the power take-out pulley.

2. A power transmitting device as set forth in claim 1 including a timing belt operably coupled to said timing belt pulley and a timing belt casing attached to the engine for covering said timing belt and said timing belt pulley.