Triangulated bicycle pedal support structure
OwnerPaul Odominventor
Life of this patent
Estimating the term…
Abstract
A bicycle is disclosed with a triangulated crank structure that replaces the single span crank arm which connects the spindle to the foot pedal on bicycles today. Said triangulated crank structure is typically comprised of several sections including two linear spans of structural material arranged so that one end of each linear span connects with the other to form the vertex of an acute angle, proximate to a pedal attachment area. From said vertex, said linear spans diverge and each connects at its opposite end to separate locations on a structural element attached to an end of the bicycle's crankshaft or spindle.
Claims19
A bicycle crank structure projecting from a spindle shaft end comprising:
- a first arm having a hollow cross-section, the first arm having a first crank end connected with respect to the spindle shaft end and a first distal end terminating at a pedal attachment area;
- a second arm having hollow cross-section, the second arm having a second crank end connected with respect to the spindle shaft end and a second distal end terminating at the pedal attachment area, the second distal end connected with respect to the first distal end to form an angle between the second arm and the first arm;
- exactly two connection struts, a first connection strut of the two connection struts connecting the first arm to the spindle shaft end and a second connection strut of the two connection struts connecting the second arm to the spindle shaft end, wherein the first connection strut and the second connection strut are radially asymmetric with respect to the spindle shaft end;
- and
- an attachment angle between the first connection strut and the second connection strut of less than 180° and on a side of the spindle shaft end facing the pedal attachment area.
A bicycle crank structure projecting from a spindle shaft end comprising:
- a first arm connected at one end with respect to the spindle shaft end and at an opposite end with respect to a pedal attachment area;
- a second arm connected at one end with respect to the spindle shaft end and at an opposite end with respect to the pedal attachment area;
- exactly two connection struts, a first connection strut of the two connection struts connecting the first arm to the spindle shaft end and a second connection struts of the two connection struts connecting the second arm to the spindle shaft end, wherein the first connecting strut and the second connection strut are radially asymmetric with respect to the spindle shaft end;
- the first arm and the second arm having a non-uniform cross-section across a length of each respective arm;
- the first arm positioned at a connection angle with respect to the second arm;
- and
- an attachment angle between the first connection strut and the second connection strut of less than 180° and on a side of the spindle shaft end facing the pedal attachment area.
A bicycle crank structure projecting from a spindle shaft end comprising:
- a first arm having a first crank end connected with respect to the spindle shaft end and a first distal end terminating at a pedal attachment area, the first arm at least partially hollow and having a generally elliptical cross-section;
- a second arm having a hollow cross-section, the second arm having a second crank end connected with respect to the spindle shaft end and on an opposite side of an axis of rotation as the first crank end, the second arm having a second distal end terminating at the pedal attachment area to form a connection angle with respect to the first arm;
- exactly two connection struts, a first connection strut of the two connection struts connecting the first arm to the spindle shaft end and a second connection strut of the two connection struts connecting the second arm to the spindle shaft end, wherein the first connection strut and the second connection strut are radially asymmetric with respect to the spindle shaft end;
- and
- an attachment angle between the first connection strut and the second connection strut of less than 180° and a side of the spindle shaft end facing the pedal attachment area.
Dependencies are inferred from the claim text.