Invention Grant
- Patent Title: Compression and torsion damping wheel suspension system
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Application No.: US12661428Application Date: 2010-03-17
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Publication No.: US08210552B2Publication Date: 2012-07-03
- Inventor: John D. Nance
- Applicant: John D. Nance
- Agency: Ernest D. Buff & Assoc. LLC
- Agent Ernest D. Buff
- Main IPC: B60G3/18
- IPC: B60G3/18

Abstract:
A compression and torsion damping wheel suspension system is useful for damping compressive and torsional shock encountered by freewheeling front caster wheels of a professional landscape lawn mower. The freewheeling caster wheels are mounted with an offset from a vertical pivot axis attached to the lawn mower frame. The compression and torsion damping wheel suspension system comprises two tubes one having internal extending projections and the other having external extending projections The smaller tube is turned within the larger tube, leaving behind several spaces within which are contained four elastomeric elements. When the caster wheel rides over a rock or bump, the elastomeric elements are compressed, damping compression shock. Caster wheel resistance is felt; the elastomeric elements experience torsion and are damped, providing a smooth ride for the operator.
Public/Granted literature
- US20110192128A1 Compression and torsion damping wheel suspension system Public/Granted day:2011-08-11
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