Patent US3722913A successfully refreshed from Google Patents.
US3722913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folding bicycle
Assignee: TSUNODA JITENSHA KK
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Filing: 1971-02-25
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Granted: 1973-03-27
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Expires: 1991-02-25
Abstract
Abstract Disclosed herein is a folding device for a folding bicycle which comprises a front body frame carrying a front road wheel, a rear body frame carrying a rear road wheel, an extension member secured on the lower portion of the rear body frame to complete the front body frame, and connecting means to connect transversely and swingably the front body frame with the extension member. Provided also to complete the device for simple and easy folding and unfolding, are locking means to fasten the connecting means, holding means to maintain the released position of the locking means, regulating means to control the holding means, and a resilient member to hold the fastening position of the locking means.
Inventors
- 👤 A Housayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:01
CPC Classifications
B; B62; B62K; B62K15/00; B62K15/006; F; F16; F16B; F16B2200/00; F16B2200/69; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0911; Y10T292/0945; Y10T292/0951; Y10T292/0956; Y10T292/1043; Y10T292/1075; Y10T292/1083; Y10T292/1089; Y10T292/54; Y10T292/546; Y10T403/00; Y10T403/32; Y10T403/32606
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
195 words
Device for locking and unlocking a folding cycle comprising a front frame portion and a rear frame portion rotatably hinged together about a common axis, said device comprising a. hooked means rotatably attachable to one of said fRames and rotatable in a plane perpendicular to the direction of movement of said frames about said common axis; b. post means attachable to the other of said frames; c. lever means attachable to said hooked means for rotating said hooked means to engage with or disengage from said post means; d. holding means on said one frame for normally holding said hooked means in a disengaged position, said holding means comprising a rod extending perpendicular to said plane plate means attached to the end of said rod and spring means for normally holding said rod in intersection with said plane; e. release means attachable to said other frame for causing said holding means to allow said lever means to move said hooked means into engagement with said post means, said release means comprising means positioned on said other frame for engaging and moving said plate means and thereby cause said rod to disengage from said hooked means.
Claim 2
Dependent Claim
195 words
Device for locking and unlocking a folding cycle comprising a front frame portion and a rear frame portion rotatably hinged together about a common axis, said device comprising a. hooked means rotatably attachable to one of said fRames and rotatable in a plane perpendicular to the direction of movement of said frames about said common axis; b. post means attachable to the other of said frames; c. lever means attachable to said hooked means for rotating said hooked means to engage with or disengage from said post means; d. holding means on said one frame for normally holding said hooked means in a disengaged position, said holding means comprising a rod extending perpendicular to said plane plate means attached to the end of said rod and spring means for normally holding said rod in intersection with said plane; e. release means attachable to said other frame for causing said holding means to allow said lever means to move said hooked means into engagement with said post means, said release means comprising means positioned on said other frame for engaging and moving said plate means and thereby cause said rod to disengage from said hooked means.
Claim 3
Dependent Claim
207 words
Device for locking and unlocking a folding cycle comprising a front frame portion and a rear frame portion rotatably hinged together about a common axis, said device comprising a. hooked means rotatably attachable to one of said frames and rotatable in a plane perpendicular to the direction of movement of said frames about said common axis; b. post means attachable to the other of said frames; c. lever means attachable to said hooked means for rotating said hooked means to engage with or disengage from said post means; d. holding means on said one frame for normally holding said hooked means in a disengaged position, said holding means comprising a rod extending perpendicular to said plane, spring means for normally holding said rod in intersection with said plane and a rigid piece attached to one end of said rod; and e. release means attachable to said other frame for causing said holding means to allow said lever means to move said hooked means into engagement with said post means, said release means comprising a tapered plate positioned on said other frame, whereby closing said frames causes said tapered plate to engage and move said rigid piece against the bias of said spring and out of said plane.
Claim 4
Dependent Claim
207 words
Device for locking and unlocking a folding cycle comprising a front frame portion and a rear frame portion rotatably hinged together about a common axis, said device comprising a. hooked means rotatably attachable to one of said frames and rotatable in a plane perpendicular to the direction of movement of said frames about said common axis; b. post means attachable to the other of said frames; c. lever means attachable to said hooked means for rotating said hooked means to engage with or disengage from said post means; d. holding means on said one frame for normally holding said hooked means in a disengaged position, said holding means comprising a rod extending perpendicular to said plane, spring means for normally holding said rod in intersection with said plane and a rigid piece attached to one end of said rod; and e. release means attachable to said other frame for causing said holding means to allow said lever means to move said hooked means into engagement with said post means, said release means comprising a tapered plate positioned on said other frame, whereby closing said frames causes said tapered plate to engage and move said rigid piece against the bias of said spring and out of said plane.
Claim 5
Dependent Claim
51 words
Device of claim 2, wherein said hooked means comprises a flat plate means having a body portion and an extended portion defining a catch, said body portion being rotatably attached to said one frame, and wherein said lever means is attached to said body portion for rotating said flat plane means.
Claim 6
Dependent Claim
43 words
Device of claim 2, wherein said hooked means comprises a body portion and an extended portion to form a hooked space therebetween for engaging said post means, said body having a hole therein, and wherein said rod normally is inserted in said hole.
Claim 7
Dependent Claim
36 words
Device of claim 2, wherein said hooked means comprises a body portion and an extended hooked portion with a space therebetween for engaging said post means, and wherein said rod normally is engaged in said space.
Claim 8
Dependent Claim
219 words
Device for locking and unlocking a folding cycle comprising a front frame portion and a rear frame portion rotatably hinged together about a common axis, said device comprising a. hooked means rotatably attachable to one of said frames and rotatable in a plane perpendicular to the direction of movement of said frames about said common axis; b. post means attachable to the other of said frames; c. lever means attachable to said hooked means for rotating said hooked means to engage with or disengage from said post means; d. holding means on said one frame for normally holding said hooked means in a disengaged position, said holding means comprising a rigid piece having a perpendicularly disposed portion, a rod extending perpendicular to said plane, spring means for holding said rod in intersection with said plane, said piece being attachable to said rod; and e. release means attachable to said other frame for causing said holding means to allow said lever means to move said hooked means into engagement with said post meAns, said release means comprising a rigid plate adjustably held to said other frame, said rigid plate being shaped to fit said perpendicularly disposed portion, whereby closing of said frames causes said plate to engage said piece thereby to cause said rod to disengage from said hooked means.
Claim 9
Dependent Claim
219 words
Device for locking and unlocking a folding cycle comprising a front frame portion and a rear frame portion rotatably hinged together about a common axis, said device comprising a. hooked means rotatably attachable to one of said frames and rotatable in a plane perpendicular to the direction of movement of said frames about said common axis; b. post means attachable to the other of said frames; c. lever means attachable to said hooked means for rotating said hooked means to engage with or disengage from said post means; d. holding means on said one frame for normally holding said hooked means in a disengaged position, said holding means comprising a rigid piece having a perpendicularly disposed portion, a rod extending perpendicular to said plane, spring means for holding said rod in intersection with said plane, said piece being attachable to said rod; and e. release means attachable to said other frame for causing said holding means to allow said lever means to move said hooked means into engagement with said post meAns, said release means comprising a rigid plate adjustably held to said other frame, said rigid plate being shaped to fit said perpendicularly disposed portion, whereby closing of said frames causes said plate to engage said piece thereby to cause said rod to disengage from said hooked means.
Claim 10
Dependent Claim
51 words
Device of claim 6, wherein said hooked means comprises a flat plate means having a body portion and an extended portion defining a catch, said body portion being rotatably attached to said one frame, and wherein said lever means is attached to said body portion for rotating said flat plate means.
Claim 11
Dependent Claim
43 words
Device of claim 6, wherein said hooked means comprises a body portion and an extended portion to form a hooked space therebetween for engaging said post means, said body having a hole therein, and wherein said rod normally is inserted in said hole.
Claim 12
Dependent Claim
36 words
Device of claim 6, wherein said hooked means comprises a body portion and an extended hooked portion with a space therebetween for engaging said post means and wherein said rod normally is engaged in said space.
References Cited (Backward Citations)
US1090305A
Cited
US1585144A
Cited
US2336129A
Cited
US2705156A
Cited
US3229797A
Cited
US3294416A
Cited
US3362725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |