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1. US5799747 - Bicycle power assist

Office United States of America
Application Number 08785703
Application Date 17.01.1997
Publication Number 5799747
Publication Date 01.09.1998
Grant Number 5799747
Grant Date 01.09.1998
Publication Kind A
IPC
B62M 23/02
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
23Transmissions characterised by use of other elements; Other transmissions
02characterised by the use of two or more dissimilar sources of power, e.g. transmissions for hybrid motorcycles
B62M 6/00
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
6Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
B62M 6/45
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
6Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
40Rider propelled cycles with auxiliary electric motor
45Control or actuating devices therefor
B62M 6/75
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
6Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
40Rider propelled cycles with auxiliary electric motor
75power-driven by friction rollers or gears engaging the ground wheel
B62M 13/02
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
13Transmissions characterised by use of friction rollers engaging the periphery of the ground wheel
02with changeable ratio, e.g. with roller of varying diameter
CPC
B62M 6/45
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR ; SINGLE-TRACK; CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
6Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
40Rider propelled cycles with auxiliary electric motor
45Control or actuating devices therefor
B62M 6/75
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR ; SINGLE-TRACK; CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
6Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
40Rider propelled cycles with auxiliary electric motor
75power-driven by friction rollers or gears engaging the ground wheel
B62M 13/02
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR ; SINGLE-TRACK; CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
13Transmissions characterised by use of friction rollers engaging the periphery of the ground wheel
02with changeable ratio, e.g. with roller of varying diameter
B62M 13/04
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR ; SINGLE-TRACK; CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
13Transmissions characterised by use of friction rollers engaging the periphery of the ground wheel
04with means for moving roller into driving contact with ground wheel
Applicants OLSEN; RANDALL BRUCE
Inventors Olsen Randall Bruce
Priority Data 08029705 11.03.1993 US
08349909 06.12.1994 US
08679936 15.07.1996 US
Title
(EN) Bicycle power assist
Abstract
(EN)

To encourage the use of bicycles for both recreation and transportation by reducing the normally excessive load on the cyclist during hill climbing. A simple on/off push button controls the power assist while a clutch automatically handles both engagement and disengagement. The invention enables a powerful (80 to 150 watts of power delivered to the bicycle tire), compact, lightweight (2.5 to 4 kg) system capable of boosting a cyclist during the hills of a 1 to 2 hour bicycle ride. The system is compatible with most bicycles, is easy to install yet includes a theft deterrent mount. The system includes several safety features including a very modest high speed limit (e.g. 12 mph) beyond which power assist is automatically disabled, and a modest power level which can be overridden by normal bicycle brakes.