Patent US3833242A successfully refreshed from Google Patents.
US3833242A
Expired / Lapsed
US
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Bicycle frame
Assignee: ORIGINAL PLASTIC BIKE
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Filing: 1972-12-29
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Granted: 1974-09-03
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Expires: 1992-12-29
Abstract
Abstract A bicycle frame formed as a unitary plastic molding is, in outline, a forwardly-upwardly sloping parallelogrammatic structure having a diagonal seat post connected between the middle diagonal corners. The top and front struts are formed of a semicylindrical portion and a radial rib portion protruding perpendicularly from the face opposite the semicylindrical face of the semicylindrical portion; the back and bottom braces are formed of a semicylindrical portion and a bar portion extending beyond the flat face of the semicylindrical portion and in the plane thereof. The entire frame is molded in one piece with a hard exterior skin covering a structural foam interior.
Inventors
- 👤 W Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:08
CPC Classifications
B; B62; B62K; B62K19/00; B62K19/02; B62K19/16; B62K19/30; B62K19/34; B62K21/00; B62K21/06
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
200 words
A bicycle frame, comprising a generally parallelogrammatic unitary plastic molding, including: a top strut and a front strut, said top strut being integral at one end thereof with one end of said front strut; a headset sleeve integral with the junction of said top and front struts for holding a front fork; a pair of laterally spaced back braces; a pair of laterally spaced bottom braces; one end of one of said back braces being integral with one end of one of said bottom braces; one end of the other of said back braces being integral with one end of the other of said bottom braces; the other ends of said back braces being integral with each other and to the other end of said top strut; the other ends of said bottom braces being integral with each other and with the other end of said front strut; a diagonal post integral at one end thereof with the junction of said top strut and said back braces and at the other end thereof with the junction of said bottom braces and said front strut; and a pedal sleeve integral with said last mentioned junction for receiving a pedal crank axle.
Claim 2
Dependent Claim
200 words
A bicycle frame, comprising a generally parallelogrammatic unitary plastic molding, including: a top strut and a front strut, said top strut being integral at one end thereof with one end of said front strut; a headset sleeve integral with the junction of said top and front struts for holding a front fork; a pair of laterally spaced back braces; a pair of laterally spaced bottom braces; one end of one of said back braces being integral with one end of one of said bottom braces; one end of the other of said back braces being integral with one end of the other of said bottom braces; the other ends of said back braces being integral with each other and to the other end of said top strut; the other ends of said bottom braces being integral with each other and with the other end of said front strut; a diagonal post integral at one end thereof with the junction of said top strut and said back braces and at the other end thereof with the junction of said bottom braces and said front strut; and a pedal sleeve integral with said last mentioned junction for receiving a pedal crank axle.
Claim 3
Dependent Claim
49 words
A bicycle frame as defined in claim 1, further comprising: a top web integral with and extending between said back braces at the junction thereof with said diagonal post; and a bottom web integral with and extending between said bottom braces at the junction thereof with said pedal sleeve.
Claim 4
Dependent Claim
42 words
A bicycle frame as defined in claim 2, further comprising: a longitudinal ridge formed on the forward face and the rearward face of said post; said rearward facing ridge being enlarged at an upper portion thereof and integral with said top web.
Claim 5
Dependent Claim
27 words
A bicycle frame as defined in claim 1, wherein said pedal sleeve further comprises a series of internal longitudinal corrugations around the interior of the pedal sleeve.
Claim 6
Dependent Claim
91 words
A bicycle frame as defined in claim 1, further comprising: a bearing cup anchored in one end of said pedal sleeve, said bearing cup having a cupped bearing race and also having means formed in said bearing cup defining an axial bore therethrough; a bearing housing anChored in the other end of said pedal sleeve and having means formed therein defining an interiorly threaded axial bore therethrough; and a bearing nipple having an exteriorly threaded surface engaged with said bearing housing and a cupped bearing faced formed on said bearing nipple.
Claim 7
Dependent Claim
163 words
A bicycle frame as defined in claim 1, further comprising a headset, including: a top and a bottom bearing sleeve concentrically mounted in said headset sleeve, each bearing sleeve having a bearing race formed thereon; a front fork having an axially bored fork sleeve integral therewith and extending concentrically through said headset sleeve and said top and bottom bearing sleeves; a ferrule anchored on the end of said fork sleeve and having screw threads formed on the exterior surface of said ferrule; a bearing ring threadedly engaged with said ferrule and having a bearing race facing the bearing race of said top bearing sleeve bearing race and holding therebetween a set of ball bearings; a cap covering said ferrule and in torque transmitting engagement therewith a handlebar clamp connected to said cap; and a bolt extending through said cap and said fork sleeve and engaged with a threaded bushing at the bottom end of said fork sleeve bore to hold said headset together.
Claim 8
Dependent Claim
127 words
A bicycle frame comprising: a top strut and a front strut, said top strut being connected at one end thereof to one end of said front strut; back brace means and bottom brace means, said back brace means being connected at one end thereof to one end of said bottom brace means; the other end of said top strut being connected to the other end of said back brace means; the other end of said front strut being connected to the other end of said bottom brace means; said top strut and said front strut each having a semicylindrical portion having a semicylindrical face, and a radial rib portion projecting radially from the side opposite said semicylindrical face a distance at least equal to the radius thereof.
Claim 9
Dependent Claim
127 words
A bicycle frame comprising: a top strut and a front strut, said top strut being connected at one end thereof to one end of said front strut; back brace means and bottom brace means, said back brace means being connected at one end thereof to one end of said bottom brace means; the other end of said top strut being connected to the other end of said back brace means; the other end of said front strut being connected to the other end of said bottom brace means; said top strut and said front strut each having a semicylindrical portion having a semicylindrical face, and a radial rib portion projecting radially from the side opposite said semicylindrical face a distance at least equal to the radius thereof.
Claim 10
Dependent Claim
100 words
A bicycle frame as defined in claim 7, further comprising: a diagonal post connected at one end thereof to the junction of said top strut and said back brace means and at the other end thereof to the junction of said bottom brace means and said front strut; and a ridge formed on the forward face and the rearward face of said post; said forward-facing ridge being enlarged at the top and bottom of said post and forming a top front fillet and a bottom front fillet, respectively, with said top strut radial rib and said front strut radial rib.
Claim 11
Dependent Claim
145 words
A bicycle frame as defined in claim 8, wherein: a pedal sleeve is formed on said diagonal post adjacent the lower end thereof; said back brace means includes a pair of laterally spaced back braces connected at one end of each to said diagonal post adjacent the top thereof, and said bottom brace means includes a pair of laterally spaced bottom braces connected at one end of each to said pedal sleeve; a top web is connected between said back braces adjacent the connection thereof to said diagonal post; a bottom web is connected between said bottom braces adjacent the connection thereof to said pedal sleeve; and said rearward-facing ridge of said diagonal post is enlarged at the top and bottom of said diagonal post and forms a top rear fillet and a bottom rear fillet, respectively, with said top web and said bottom web.
Claim 12
Dependent Claim
161 words
A bicycle frame as defined in claim 7, wherein: said back brace means includes a pair of laterally spaced back braces connected together at one end thereof; said bottom brace means includes a pair of laterally spaced bottom braces connected together at one end thereof; the other end of one of said back braces is connected to the other end of one of said bottom braces; the other end of the other of said back braces is connected to the other end of the other of said bottom braces; a diagonal post is connected near One end thereof to the junction of said top strut and said back braces, and at the other end thereof is connected to the junction of said bottom braces and said front strut; and said bottom braces each have a bar portion and a semicylindrical portion projecting from one face of said bar portion, the opposite face of each of said bar portions facing one another.
Claim 13
Dependent Claim
41 words
A bicycle frame as defined in claim 10, wherein: said back braces each have a bar portion and a semicylindrical portion projecting from one face of said bar portion, the opposite face of each of said bar portions facing each other.
Claim 14
Dependent Claim
79 words
A bicycle frame, comprising: a unitary plastic molding including a connector for attachment of a rear wheel, a pedal sleeve for receiving a pedal crank axle, a seat post extension for receiving a seat, a fork sleeve for receiving a front fork, and frame means for rigidly interconnecting said connector, said pedal sleeve, said seat post, and said fork sleeve; said frame means of said unitary plastic molding formed of a hard exterior skin and a structural foam interior.
Claim 15
Dependent Claim
79 words
A bicycle frame, comprising: a unitary plastic molding including a connector for attachment of a rear wheel, a pedal sleeve for receiving a pedal crank axle, a seat post extension for receiving a seat, a fork sleeve for receiving a front fork, and frame means for rigidly interconnecting said connector, said pedal sleeve, said seat post, and said fork sleeve; said frame means of said unitary plastic molding formed of a hard exterior skin and a structural foam interior.
Claim 16
Dependent Claim
70 words
A bicycle frame as defined in claim 12, wherein said frame means comprises: a top strut connected between said seat post extension and said fork sleeve; a front strut connected between said fork sleeve and said pedal sleeve; said top strut and said front strut having a semicylindrical portion and a radial rib portion formed on the side opposite the semicylindrical face of said semicylindrical portion and projecting radially therefrom.
Claim 17
Dependent Claim
95 words
A bicycle frame as defined in claim 12, wherein said frame means comprises: back brace means connected between said seat post extension and said rear connector; bottom brace means connected between said pedal sleeve and said bar connector; a seat post connected between said seat post extension and said pedal sleeve, said back and bottom brace means including a pair of laterally spaced back braces and a pair of laterally spaced bottom braces; each of said back braces and said bottom braces having a bar portion and projecting from one face thereof, a semicylindrical portion.
Claim 18
Dependent Claim
159 words
A bicycle frame as defined in claim 12, wherein said frame means comprises: a seat post connected between said seat post extension and said pedal sleeve, a top strut connected between said seat post and said fork sleeve; a front strut connected between said fork sleeve and said pedal sleeve; said top strut and said front strut having a semicylindrical portion and a radial rib portion formed on the side opposite the semicylindrical face of said semicylindrical portion and projecting radially therefrom a distance at least equal to the radius thereof; back brace means connected between said seat post and said rear connector; bottom brace means connected between said pedal sleeve and said rear connector; said back and bottom brace means including a pair of laterally spaced back braces and a pair of laterally spaced bottom braces; each of said back braces and said bottom braces having a bar portion and projecting from one face thereof, a semicylindrical portion.
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) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |