James L Singleton

US Patent:

53205898, Jun 14, 1994

Filed:

Jul 8, 1993

Appl. No.:

8/089221

Inventors:

James M. Singleton - Allen TX
James A. Mann - Richardson TX

Assignee:

JAS Manufacturing Co., Inc. - Carrolton TX

International Classification:

A63B 2202

US Classification:

482 54

Abstract:

A treadmill which includes a generally rectangular frame defining a walking plane, said frame having laterally disposed parallel trending side rails (18); a drive roller, said drive roller having walls defining a hollow cylinder; a free roller (10), said free roller (10) having walls defining a hollow cylinder, the walls of said drive and said free rollers (10) each having an annular groove (38) in the outer walls (36) thereof, the groove (38) located closer to an end of said rollers (10) than the longitudinal center line of said frame; shaft (12) for mounting said rollers (10) between said rails (18) and in generally perpendicular relation; an endless belt (20) of flexible material having an outer walking surface and an inner surface, the inner surface having an inwardly projecting alignment ridge (44) mating with said grooves (38) of said rollers (10) to allow a substantially flush fit of said rollers (10) against said belt (20) and to prevent said endless belt (20) from wandering on said rollers (10).

US Patent:

54316138, Jul 11, 1995

Filed:

Jun 10, 1994

Appl. No.:

8/258565

Inventors:

James M. Singleton - Allen TX
James A. Mann - Richardson TX

Assignee:

JAS Manufacturing Co., Inc. - Carrollton TX

International Classification:

A63B 2306

US Classification:

482 54

Abstract:

A treadmill which includes a generally rectangular frame defining a walking plane, said frame having laterally disposed parallel trending side rails (18); a drive roller, said drive roller having walls defining a hollow cylinder; a free roller (10), said free roller (10) having walls defining a hollow cylinder, the walls of said drive and said free rollers (10) each having an annular groove (38) in the outer walls (36) thereof, the groove (38) located closer to an end of said rollers (10) than the longitudinal center line of said frame; shaft (12) for mounting said rollers (10) between said rails (18) and in generally perpendicular relation; an endless belt (20) of flexible material having an outer walking surface and an inner surface, the inner surface having an inwardly projecting alignment ridge (44) mating with said grooves (38) of said rollers (10) to allow a substantially flush fit of said rollers (10) against said belt (20) and to prevent said endless belt (20) from wandering on said rollers (10).