Bicycle crank arm extender
OwnerVernon E. Buckinventor
Life of this patent
Estimating the term…
Abstract
A simple, finitely indexable bicycle crank arm extender that is readily, universally and securably installable on a bicycle crank arm including an elongated member having an inner end, an outer end and a plurality of transverse, threaded throughbores. The inner end of the elongated member mounts on the crank arm with a U-bolt that clamps the elongated member and crank arm together. The outer end of the elongated member mounts on the crank arm with a threaded fastener that is received in the distally-disposed threaded bore of the crank arm and threadingly engages one of the plurality of threaded throughbores in the elongated member. A pedal is rotatably mounted at the outer end of the elongated member.
Claims8
An extender for a bicycle crank arm including a pedal, said extender comprising:
- a unitary elongated member having an inner end, an opposing outer end, and a plurality of transverse, threaded throughbores, one of said plurality of transverse, threaded throughbores being proximate to said opposing outer end for receiving the pedal;
- a cylindrical rod member for connecting the crank arm to said elongated member at a second one of said plurality of transverse, threaded throughbores;
- and
- attaching means for attaching said inner end of said elongated member to the crank arm.
A combination of a bicycle, with at least one crank arm including a pedal, and a bicycle crank arm extender, said extender comprising:
- a unitary elongated member having an inner end and a plurality of transverse, threaded throughbores, one of said plurality of transverse, threaded throughbores threadingly receiving the pedal;
- a cylindrical rod member having threads threadingly engaging the at least one crank arm with said elongated member at a second one of said plurality of transverse, threaded throughbores;
- and
- attaching means for attaching said inner end of said elongated member to the at least one crank arm.
An extender for a bicycle crank arm including a pedal, said extender comprising:
- an elongated member having an inner end and a plurality of transverse throughbores, one of said plurality of transverse, throughbores for receivinq the pedal;
- a rod member for connecting the crank arm to said elongated member at one of said plurality of transverse throughbores;
- and
- attaching means for attaching said inner end of said elongated member to the crank arm;
- said attaching means for attaching said inner end of said elongated member to the crank arm including:
- a U-bolt with legs having threaded ends;
- a plate having a throughbore for receiving each of said legs of said U-bolt;
- and
- a threaded nut engaging with each of said threaded ends and abutting said plate;
- said U-bolt and said plate cooperatively encircling said elongated member, each said threaded nut threadingly urging said U-bolt and said plate to cooperatively clamp said elongated member to the crank arm;
- said elongated member having at least one groove configured to restrain said U-bolt from sliding therealong;
- and
- said plurality of transverse throughbores having threads, said rod member having threads threadingly engaging with one of said plurality of transverse throughbores.
Dependencies are inferred from the claim text.