A detachable top tube assembly includes inner and outer tube members telescopically received by one another. Each inner and outer tube member includes one or more of an elliptical cross-sectional shape or is arced along a longitudinal axis thereof to prevent rotation of the inner and outer tube memb
A detachable top tube assembly includes inner and outer tube members telescopically received by one another. Each inner and outer tube member includes one or more of an elliptical cross-sectional shape or is arced along a longitudinal axis thereof to prevent rotation of the inner and outer tube members relative to one another. Each of a pair of yoke assemblies is disposed at opposite ends of the inner and outer tube members and include a rotatable gate assembly for opening and closing the yoke assemblies. A pair of spring biased members is provided for engagement with the rotatable gate assemblies to maintain the gate assemblies in a closed position. A pair of button covers is provided for depressably engaging each spring biased member so to allow the gate assemblies to be rotated relative to a respective inner and outer tube member.
대표청구항▼
1. A detachable surrogate top tube assembly for a bicycle comprising: an inner tube member having an insert portion that is telescopically inserted within a receiving portion of an outer tube member, the insert and receiving portions each having a lengthwise centered longitudinal axis that is orient
1. A detachable surrogate top tube assembly for a bicycle comprising: an inner tube member having an insert portion that is telescopically inserted within a receiving portion of an outer tube member, the insert and receiving portions each having a lengthwise centered longitudinal axis that is oriented substantially coincident, one with the other, in a retracted configuration;a first yoke non-rotatably coupled to a first end of the tube assembly;a second yoke non-rotably coupled to a second end of the tube assembly;a first gate assembly coupled to the first end of the tube assembly and having a first end, a second end and a pivot portion, wherein the first end and second end pivot about the pivot portion that is located between the first end and the second end;a second gate assembly coupled to the second end of the tube assembly and having a first end, a second end and a pivot portion, wherein the first end and second end pivot about the pivot portion that is located between the first end and the second end;the insert portion and the receiving portion each having a length; andthe insert portion and the receiving portion each having a non-round cross-sectional shape running along a substantial entirety of their lengthwise centered longitudinal axes for a substantial entirety of their lengths with a sufficiently narrow clearance space therebetween such that rotation of the insert portion relative to the receiving portion is limited by abutting interference between an exterior surface of the inner tube member and an interior surface of the outer tube member;wherein the insert portion has a substantially uniform cross-sectional shape along a length thereof and the longitudinal axis centered therein is arc-shaped, and the receiving portion has a substantially uniform cross-sectional shape along a length thereof and the longitudinal axis centered therein is arc-shaped. 2. The detachable surrogate top tube assembly as recited in claim 1, wherein the first yoke is non-rotatably coupled to the first end of the tube assembly at a first end of the inner tube member; and the second yoke is non-rotatably coupled to the second end of the tube assembly at a first end of the outer tube member. 3. The detachable surrogate top tube assembly as recited in claim 1, wherein the insert portion and the receiving portion each has an elliptical cross-sectional shape. 4. The detachable surrogate top tube assembly as recited in claim 1, wherein the exterior surface of the insert portion is complementarily shaped to the interior surface of the receiving portion thereby establishing a substantial conformance fit therebetween in the retracted configuration. 5. The detachable surrogate top tube assembly as recited in claim 1, wherein the outer tube member surrounds a majority of a length of the inner tube member in the retracted configuration. 6. The detachable surrogate top tube assembly as recited in claim 1, wherein each of the longitudinal axes is arc-shaped on an approximately three meter radius. 7. The detachable surrogate top tube assembly as recited in claim 6, wherein the inner tube member and the outer tube member are each approximately one-third of a meter long. 8. The detachable surrogate top tube assembly as recited in claim 1, further comprising a releasable bicycle frame securement device coupled, one each, to the inner tube member and the outer tube member. 9. The detachable surrogate top tube assembly as recited in claim 1, further comprising a bullet member configured to hold the first gate assembly in a closed configuration and a thumb-plate installed on the exterior of the first gate assembly and configured to abut the bullet member upon depression. 10. The detachable surrogate top tube assembly as recited in claim 9, further comprising another bullet member configured to hold the second gate assembly in a closed configuration and a thumb-plate installed on the exterior of the second gate assembly and configured to abut the another bullet member upon depression. 11. A detachable surrogate top tube assembly for a bicycle comprising: an inner tube member having an insert portion that is telescopically inserted within a receiving portion of an outer tube member, the insert and receiving portions each having a lengthwise centered longitudinal axis that is oriented substantially coincident, one with the other, in a retracted configuration;each of the insert portion and the receiving portion has a non-round substantially uniform cross-sectional shape along a length thereof and the longitudinal axis centered therein is arc-shaped; anda first yoke and a second yoke, the first yoke and the second yoke non-rotatably attached to the surrogate top tube assembly;a first gate assembly coupled to a first end of the surrogate top tube assembly and having a first end, a second end and a pivot portion, wherein the first end and second end pivot about the pivot portion that is located between the first end and the second end;a second gate assembly coupled to a second end of the surrogate top tube assembly and having a first end, a second end and a pivot portion, wherein the first end and second end pivot about the pivot portion that is located between the first end and the second end. 12. The detachable surrogate top tube assembly as recited in claim 11, wherein the first yoke is attached to the surrogate tube top assembly at the first end of the inner tube member distal the insert portion. 13. The detachable surrogate top tube assembly as recited in claim 11, wherein both the insert portion and the receiving portion each has a substantially uniform cross-sectional shape along a respective length thereof and the longitudinal axes centered therein are arc-shaped. 14. The detachable surrogate top tube assembly as recited in claim 11, further comprising: the insert portion and the receiving portion each has a longitudinal axis centered therein that is arc-shaped; anda clearance space is located between the insert portion and the receiving portion that is sufficiently narrow that rotation of the insert portion relative to the receiving portion is limited by abutting interference between an exterior surface of the inner tube member and an interior surface of the outer tube member upon relative rotation of the members. 15. The detachable surrogate top tube assembly as recited in claim 11, wherein the insert portion and the receiving portion each has an elliptical cross-sectional shape. 16. The detachable surrogate top tube assembly as recited in claim 11, wherein the exterior surface of the insert portion is complementarily shaped to the interior surface of the receiving portion thereby establishing a substantial conformance fit therebetween in the retracted configuration. 17. The detachable surrogate top tube assembly as recited in claim 11, wherein the outer tube member surrounds a majority of a length of the inner tube member in the retracted configuration. 18. The detachable surrogate top tube assembly as recited in claim 13, wherein each of the longitudinal axes is arc-shaped on an approximately three meter radius. 19. The detachable surrogate top tube assembly as recited in claim 18, wherein the inner tube member and the outer tube member are each approximately one-third of a meter long. 20. The detachable surrogate top tube assembly as recited in claim 11, further comprising a releasable bicycle frame securement device coupled, one each, to the inner tube member and the outer tube member.
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이 특허에 인용된 특허 (7)
Nauman Leonard G. (Golden Valley MN) Stenberg Dale E. (Bloomington MN), Bicycle conversion bar.
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