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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.:

US 10624262 B1

PDFFull Text
Date of Patent:
Apr. 21, 2020

Filed:

Mar. 29, 2018

Closed-loop electronic slipping belt transmission speed control system for a walk-behind lawn mower

Applicant:

Honda Motor Co., Ltd., Tokyo, JP;

Inventor:

Andrew Edwin Bejcek, Chapel Hill, NC (US);

Assignee:

Honda Motor Co., Ltd., Tokyo, JP;

Attorneys:

Mark E. Duell

Rankin, Hill & Clark LLP

Primary Examiner:

Roger L Pang

Int. Cl.
CPC ...
F16H 9/04 (2006.01); A01D 34/69 (2006.01); A01D 34/00 (2006.01); F16H 35/06 (2006.01); F16H 63/06 (2006.01); F16H 63/30 (2006.01); F16H 19/08 (2006.01); A01D 34/68 (2006.01); A01D 101/00 (2006.01); B60W 30/14 (2006.01); B60W 10/107 (2012.01); F16H 59/44 (2006.01); F16H 61/662 (2006.01); F16H 7/08 (2006.01); F16H 7/10 (2006.01);
U.S. Cl.
CPC ...
A01D 34/69 (2013.01); A01D 34/006 (2013.01); F16H 9/04 (2013.01); F16H 19/08 (2013.01); F16H 35/06 (2013.01); F16H 63/062 (2013.01); F16H 63/304 (2013.01); A01D 2034/6837 (2013.01); A01D 2101/00 (2013.01); B60W 10/107 (2013.01); B60W 30/143 (2013.01); F16H 7/08 (2013.01); F16H 7/10 (2013.01); F16H 59/44 (2013.01); F16H 61/662 (2013.01); F16H 61/66231 (2013.01); F16H 61/66236 (2013.01); F16H 2007/0823 (2013.01); F16H 2061/66204 (2013.01); F16H 2063/3066 (2013.01); Y10T 477/6237 (2015.01);
Abstract

A transmission speed control system for a walk-behind lawn mower includes a transmission, a transmission positioning assembly, and an electronic control unit. The transmission is tiltable about and operably engaged with a drive axle shaft. The transmission positioning assembly tilts the transmission between first and second angular positions. A belt tension between a drive belt and a transmission pulley of the transmission continuously increases from a minimum belt tension when the transmission is in the first angular position to a maximum belt tension when the transmission is in the second angular position. The rotational drive force exerted on the drive axle shaft by the transmission and a resulting driving speed of the lawn mower vary proportionally with the belt tension. The electronic control unit controls the transmission positioning assembly to tilt the transmission based on target and detected driving speeds.

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