Lawn mower support structure

• US 4,813,218 A
• Filed: 11/18/1987
• Issued: 03/21/1989
• Est. Priority Date: 11/20/1986
• Status: Expired due to Fees

• Current Assignee: Husqvarna AB (HUSQVARNA)
• Original Assignee: Husqvarna AB (HUSQVARNA)
• Inventors: Claesson, Tore V.
• Primary Examiner(s): Hirsch, Paul J.
• Application Number:
  US07/122,171
• Time in Patent Office: 489 Days
• Field of Search: 56/12.6, 56/306, 248/603, 248/273
• US Class Current: 56/306
• CPC Class Codes: A01D 2101/00 Lawn-mowers
• CPC Class Codes: A01D 34/826 Noise reduction means

Abstract

This invention relates to a lawn mower comprising a motor, preferably of the combustion engine type, rotating a knife about a vertical axis, a chassis surrounding said knife and a support structure between the motor and the chassis comprising vibration insulating means. The vibration insulating means comprise several elongated blocks (22) of elastic material the blocks being placed with their longitudinal axis in the radial direction so that they when being acted on by tangential forces (B) are deformed more than when they are acted on by radial forces (C) the support structure joining the chassis (16) and a motor support (10) to each other by separate means (28,29) allowing a limited tangetial movement between the motor support and the chassis and preventing separation of the motor support and the chassis.

Claims

1. In a lawn mower having a motor, a cutting blade rotated by said motor about a substantially vertical axis, a chassis surrounding said blade, a motor support, and a support structure mounted between said motor and the chassis and including vibration insulation means, the improvement comprising;

said vibration insulating means including a plurality of elongated blocks of resilient material, the blocks being placed with their longitudinal axis in the radial direction so that when they are acted upon by a tangential force are deformed more than when they are acted upon by a radial force, and separate means for joining the chassis and motor support whereby a limited tangential movement is permitted between said motor support and chassis while preventing the separation of said chassis and motor support, said separate means comprising sleeves having flanges that are fixed to said chassis.

2. A lawn mower as claimed in claim 1 wherein said motor support is provided with spaced holes, and said sleeves are freely extending through said holes whereby said flanges of the sleeves lock said motor support to said chassis.

3. A lawn mower as claimed in claim 2 further comprising a rubber cover on said sleeve, and facing said motor support.

4. A lawn mower as claimed in claim 1 further comprising releasable clamps, and said elongated resilient blocks being secured to said motor support or chassis by said releasable clamps.

5. A lawn mower as claimed in claim 4 wherein said clamps are U-shaped, and the outer part of the legs are provided with grooves to engage the edges of holes in said chassis or motor support.

6. A lawn mower as claimed in claim 1 further comprising pockets wherein the elongated resilient bodies rest in said pockets on said chassis or on the motor support.