초록 ▼

A cam lever arrangement is provided which permits the loosening and tightening of the chain on the chain saw blade tool with a simple lever motion. The lever arrangement is connected to the motor housing cover door. Opening the door automatically loosens the chain. Closing the door automatically tig

A cam lever arrangement is provided which permits the loosening and tightening of the chain on the chain saw blade tool with a simple lever motion. The lever arrangement is connected to the motor housing cover door. Opening the door automatically loosens the chain. Closing the door automatically tightens the chain. Precision adjustments to tension are easily made in the cam lever arrangement by hand manipulation of a turnbuckle which is free from pressure when the lever is in the release position.

대표청구항 ▼

A cam lever arrangement is provided which permits the loosening and tightening of the chain on the chain saw blade tool with a simple lever motion. The lever arrangement is connected to the motor housing cover door. Opening the door automatically loosens the chain. Closing the door automatically tig

A cam lever arrangement is provided which permits the loosening and tightening of the chain on the chain saw blade tool with a simple lever motion. The lever arrangement is connected to the motor housing cover door. Opening the door automatically loosens the chain. Closing the door automatically tightens the chain. Precision adjustments to tension are easily made in the cam lever arrangement by hand manipulation of a turnbuckle which is free from pressure when the lever is in the release position. 990500, Kozel et al., 439/066; US-5913687, 19990600, Rathburn, 439/066; US-5938451, 19990800, Rathburn, 439/066; US-5973394, 19991000, Slocum et al., 257/690; US-5989939, 19991100, Fjelstad, 438/117; US-6019610, 20000200, Glatts, III, 439/066; US-6135783, 20001000, Rathburn, 439/066; US-6174172, 20010100, Kazuma, 439/066; US-6178629, 20010100, Rathburn, 029/843; US-6193524, 20010200, Chang, 439/066; US-6229320, 20010500, Haseyama et al., 324/754; US-6231353, 20010500, Rathburn, 439/066; US-6247938, 20010600, Rathburn, 439/066; US-6350132, 20020200, Glatts, III, 439/066; US-6358063, 20020300, Neidich, 439/066; US-6365499, 20020400, Nakamura et al., 029/841 ol) in ether and acetone for 15 hours at room temperature. Me 2-alkoxy derivatives 1, 4 and 7 are synthesised by the reaction of the respective 2-hydroxy derivative with the appropriate alcohol, in acid medium and reflux. Compounds 2, 5, 8 and 9 are synthesised by the reaction of the respective 2-hydroxy derivative with the 3-bromopropanol in acidic medium and reflux. The 2-(3-bromopropoxy) derivatives thin reacted with silver nitrate in acetonitrile and reflux. The compounds of formula (I) decrease significantly total cholesterol, triglyceride and LDL-cholesterol levels in plasma. The compounds of formula (I) possess potent antioxidant activity. The compounds of formula (I) with the above properties could be useful to the treatment of hypercholesterolemia, hyperlipidemia and atheromatosis.