# US 8,465,038 B2 · Lever enhanced pedaling system with wrap around chain propulsion system

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- Number: US 8,465,038 B2
- Document ID: US8465038B2
- Status: Granted
- Kind: B2
- Application number: 13/136,745
- Filed: 2011-08-09
- Published: 2012-04-12
- Granted: 2013-06-18
- Earliest claimed: 2010-08-11
- Assignees: Rashad Na'im Scarborough
- Applicants: Rashad Na'im Scarborough
- Inventors: Rashad Na'im Scarborough
- Web page: https://patentgrep.com/patent/US8465038B2

## CPC

- B62M 1/28: characterised by the use of flexible drive members, e.g. chains
- B62M: RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR {SINGLE-TRACK} CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES (arrangements or mounting of transmissions in vehicles in general B60K; transmission elements per se F16)

## Abstract

A propulsion system of a lever propelled bicycle that utilizes a right and left side assembly consisting of two sets of linear chain links with an offset connection to one another by a spacer means, wherein each assembly is able by said spacer connection means to wrap around separate radial drive members at least 1¾ revolutions without wrapping around itself, therefore providing the rotational pulling means of it's connected radial drive member with a propulsion that is consistent in range and torque. The propulsion system also provides means of rewrapping each chain assembly around its radial drive member for reciprocal rotational pulling action by alternate levers when a rider applies force to each pedal.

## Claims

### Claim 1

The transmission chain propulsion system of a human propelled bicycle that is pulled by lever machines, wherein the improvement comprises:
a right and left side chain that is configured to wrap around a separate radial drive member of a bicycle, wherein each radial drive member is coupled to the rear wheel of said bicycle with slip lock forward driven connection;
said right and left side chain that is configured to wrap around the diameter of its radial drive member at least 1¾ revolutions without wrapping around itself;
said right and left side transmission chain system having means to pull and rotate it's connected radial drive member, while reeling a connected cable member around said radial drive member.

### Claim 2 (depends on 1)

A right and left side transmission chain system as defined in claim 1, wherein each has a chain member with means to be wrapped around a separate radial drive member by the pulling of a connected cable member that is wrapped around said right radial drive member and said left radial drive member.

### Claim 3 (depends on 1)

A right and left side transmission chain as defined in claim 1, wherein each chain assembly has a radial drive end connected to a set of linear chain links that is offset by a spacer means in connection to another set of linear chain links having an opposite end that is connected to a lever machine.

### Claim 4 (depends on 1)

A transmission chain propulsion system as defined in claim 1 having an axle that can be pulled out of the bores of each said radial drive member, allowing the drop out removal of said rear wheel.