Patent US4306980A successfully refreshed from Google Patents.
Patent US5785338A successfully refreshed from Google Patents.
US5785338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible bicycle
Assignee: Individual
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Filing: 1997-04-11
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Granted: 1998-07-28
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Expires: 2017-04-11
Abstract
Abstract A collapsible bicycle frame includes a main frame having a front frame and a rear frame. A rear end of the front frame and a front end of the rear frame are pivotally connected. The rear end of the front frame includes a first engaging mechanism while the front end of the rear frame includes a second engaging mechanism for securely engaging with the first engaging mechanism when the front frame and the rear frame are in an extended status, and the first engaging mechanism and the second engaging mechanism disengages from each other when collapsing the bicycle.
Inventors
- 👤 Teng-Shou Chang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:04
CPC Classifications
B; B62; B62K; B62K15/00; B62K15/006
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
337 words
A collapsible bicycle frame including a main frame having a front frame having a rear end and a rear frame having a front end pivotally connected to the rear end of the front frame, the rear end of the front frame including a first engaging means while the front end of the rear frame including a second engaging means for securely engaging with the first engaging means when the front frame and the rear frame are in an extended status, and the first engaging means and the second engaging means disengages from each other when collapsing the bicycle, the second engaging means including: at least one guiding rod extending in a vertical direction, a sliding block mounted around the guiding rod and slidable along a longitudinal direction of the main frame, the sliding block having an elongate hole through which the guiding rod extends, the sliding block having a first end for releasably engaging with the first engaging means and a second end, a push rod attached to the second end of the sliding block at an end thereof, a push seat mounted to the other end of the push rod such that longitudinal movement of the push seat causes longitudinal movements of the push rod and the sliding block, and a foot peg means having a shaft pivotally connected to the rear frame, and the push seat being securely attached to the shaft to move therewith, the foot peg means including at least one foot extending from an end of the shaft, whereby when the foot of the foot peg means extends in a horizontal position, the sliding block engages with the first engaging means such that the front frame and the rear frame are not pivotable, and the foot provides a support for the bicycle when the foot is in a vertical position on the ground in which the sliding block disengages from the first engaging means and thus allows pivotal movement of the front frame relative to the rear frame to a collapsed status.
Claim 2
Dependent Claim
337 words
A collapsible bicycle frame including a main frame having a front frame having a rear end and a rear frame having a front end pivotally connected to the rear end of the front frame, the rear end of the front frame including a first engaging means while the front end of the rear frame including a second engaging means for securely engaging with the first engaging means when the front frame and the rear frame are in an extended status, and the first engaging means and the second engaging means disengages from each other when collapsing the bicycle, the second engaging means including: at least one guiding rod extending in a vertical direction, a sliding block mounted around the guiding rod and slidable along a longitudinal direction of the main frame, the sliding block having an elongate hole through which the guiding rod extends, the sliding block having a first end for releasably engaging with the first engaging means and a second end, a push rod attached to the second end of the sliding block at an end thereof, a push seat mounted to the other end of the push rod such that longitudinal movement of the push seat causes longitudinal movements of the push rod and the sliding block, and a foot peg means having a shaft pivotally connected to the rear frame, and the push seat being securely attached to the shaft to move therewith, the foot peg means including at least one foot extending from an end of the shaft, whereby when the foot of the foot peg means extends in a horizontal position, the sliding block engages with the first engaging means such that the front frame and the rear frame are not pivotable, and the foot provides a support for the bicycle when the foot is in a vertical position on the ground in which the sliding block disengages from the first engaging means and thus allows pivotal movement of the front frame relative to the rear frame to a collapsed status.
Claim 3
Dependent Claim
23 words
The collapsible bicycle frame according to claim 1, wherein the first engaging means includes a receiving compartment for engaging with the sliding block.
Claim 4
Dependent Claim
82 words
The collapsible bicycle frame according to claim 1, wherein a seat tube of the main frame includes a lower end which is pivotally connected to a pivotal section of the rear frame, and further includes a locking mechanism in which the seat tube is in secure engagement with the rear frame for cycling when the locking mechanism is in a locking status, and the seat tube is pivotable relative to the rear frame when the locking mechanism is in an unlocked status.
Claim 5
Dependent Claim
44 words
The collapsible bicycle frame according to claim 3, wherein the locking mechanism includes a lever pivotally mounted to the seat tube and a retainer ring pivotally mounted to the lever, and the rear frame includes a hook for releasable engagement with the retainer ring.
Claim 6
Dependent Claim
111 words
The collapsible bicycle frame according to claim 3, wherein the locking mechanism includes a first screw hole defined in an extension of the rear frame, a bolt is extended through the first screw hole, and the seat tube includes a second screw hole defined in a periphery thereof, when the seat tube is in an upright position, the second screw hole is in alignment with the first screw hole, and the bolt is extended into the second screw hole to secure the seat tube and the rear frame together, and disengagement of the bolt from the second screw hole allows pivotal movement of the seat tube relative to the rear frame.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-07-27 | 2002-01-26 | 2002-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-07-27 | 2006-01-26 | 2006-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-07-27 | 2010-01-26 | 2010-07-28 | $7700.00 | Window Closed / Lapsed |