Brunswick Corporation

Gregory A Joseph

Juliette C Daly

Timothy T Anderson

John J Hsing

John M Rogus

Gary E Oglesby

Mark C Termion

Robert C Seaman

Rachel Lara Abigal Buckley

Emil S Golen, Jr

Ming Jiang

Craig R Norman

Russell W Krch, Sr

Karen Jean Knauf

Elena A Martynenko

Lisa Marie Nowak

Gregory A Bahnfleth

Rachel Lara Abigail Buckley

Thomas J Fuller

Rachel Lara Buckley

In an elliptical step exercise apparatus a dynamic link mechanism can be used to vary the stride length of the machine. A control system can also be used to vary stride length as a function of various exercise and operating parameters such as speed and direction as well as varying stride length as a part of a preprogrammed exercise routine such as a hill or interval training program. In addition the control system can use measurements of stride length to optimize operation of the apparatus.

Stride adjustment mechanism

In a biometric sensor provided for use with an exercise apparatus and having a pair electrodes for sensing a biopotential signal, a common-mode rejection circuit can be used to cancel noise in the signal resulting from various sources including motion of the apparatus.

Noise cancellation mechanism

In an elliptical step exercise apparatus distance traveled can be approximated by determining the portion of the ellipse traversed by a foot pedal where the user applies force to the pedal. This portion can be considered equivalent to the amount of foot travel on a treadmill and modified as a function of speed to simulate the gait of a user at various speeds so as to provide an approximation of the distance traveled by a user as if he were running on a treadmill. This process can be further modified for use with an elliptical exercise apparatus where the stride length can be changed such that the simulated distance will be increased with increased stride length.

Elliptical step distance measurement

In an elliptical step exercise apparatus where stride length can be varied the various user programs can take advantage of this feature to provide for an enhanced workout. A control system can be used to implement a preprogrammed exercise routine such as a hill program where stride is shortened as the user goes up a simulated hill and lengthened as the user goes down the hill. In an interval training program, stride length can be increased and decreased at periodic intervals. In a cross training program, stride length can be decreased when the user is pedaling backwards and increased when the user is pedaling forwards.

Stride adjustment program

Growing community of inventors

Naperville, IL, United States of America

Gregory A Joseph