The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 09, 1991
Filed:
Jun. 13, 1990
Bernhard Palm, Brookfield, WI (US);
Milwaukee Electric Tool Corporation, Brookfield, WI (US);
Abstract
The in-line saw has a handle, a motor housing and a gear case which contains a drive mechanism which imparts a reciprocating action to the blade. The drive mechanism generates heat. The gear case is covered by an insulating boot which has internal ribs which contact the gear case and form air flow channels. The motor housing has air openings near the handle and the fan mounted on the motor drive shaft draws cooling air through the slots over the motor and out the space between the gear case and the motor housing except that the boot extends partially over the slot to divert air to the space between the boot and the case. The cooling air leaves the cooling space at the front of the boot to blow sawdust from the area of the blade. The boot is electrically insulating and covers the metal gear case.