Bolt for attaching a rotary mower blade

Details Bolt for attaching a rotary mower blade Bolt for attaching a rotary mower blade

2008-01-29

2010-10-19

Estremsky, Gary (Department: 3677)

Harvesters

Miscellaneous

C411S399000, C411S424000, C056S295000

Reexamination Certificate

active

07814735

ABSTRACT:
A blade bolt for attaching a blade to a rotating member of a rotary mower has a head at a lower end, a cylindrical shoulder portion extending from the head, a shank extending from the shoulder portion, the shank having a cross-section that is rounded and non-cylindrical, and a threaded portion extending from the shank. The shoulder portion extends laterally beyond at least a portion of the shank such that the shoulder portion bears against the rotating member when the shank is inserted into a mounting aperture defined by the mounting member that has a shape corresponding to the cross-section of the shank. The rounded and non-cylindrical shank prevents rotation of the bolt, and distributes stress forces across a wider area compared to the prior art.

REFERENCES:
patent: 1066761 (1913-07-01), Semon
patent: 5036727 (1991-08-01), Engel
patent: 5483747 (1996-01-01), Thompson et al.
patent: 5492446 (1996-02-01), Hawkins et al.
patent: 2477180 (2006-02-01), None
patent: 2477180 (2006-02-01), None
patent: 2300236 (1996-10-01), None

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