Patent US4503729A successfully refreshed from Google Patents.
US4503729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drop type handle for a bicycle
Assignee: Shimano Inc
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Filing: 1981-02-26
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Granted: 1985-03-12
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Expires: 2001-02-26
Abstract
Abstract A drop type handle for a bicycle, comprising a first bar body horizontally extending and second bar bodies which have first bent portions in continuation of both lengthwise ends of the first bar body and extending forwardly in a curved manner, second bent portions in continuation of the front ends of the first bent portions and curving downwardly and rearwardly, and second straight portions in continuation of the lower rear ends of second bent portions and extending rearwardly. The first bar body has first grip portions inclined rearwardly and downwardly at lengthwise outer ends with respect to first straight portions at the bar body, and the second bar bodies have second gripping portions being inclined at the front sides inwardly and downwardly with respect to the forward extension lines of the first bent portions respectively, and having third gripping portions inclined at the front sides inwardly with respect to the rearward extension lines of the second straight portions.
Inventors
- 👤 Keizo Shimano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:48
CPC Classifications
B; B62; B62K; B62K21/00; B62K21/12; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20732; Y10T74/2078
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
305 words
In a drop type handle for a bicycle comprising a first bar body which has at its central portion a mounting portion for a handle stem and extends horizontally outwardly from both sides of said mounting portion, and a second pair of bar bodies which are formed in continuation of both lengthwise ends of said first bar body, the improvement wherein, when said handle is mounted on a handle stem of a bicycle in proper operating position for a drop type handle, said first bar body has at both lengthwise sides thereof first gripping portions, each of said first gripping portions being inclined at its lengthwise outer end in a direction rearwardly and downwardly with respect to said mounting portion and to first straight portions in continuation of said mounting portion, and said second bar bodies have first bent portions which are formed in continuation of both lengthwise ends of said first bar body and extend forwardly along a curve, second bent portions which are formed in continuation of foremost ends of said first bent portions and curved downwardly and rearwardly thereform, second straight portions which are formed in continuation of lower rear ends of said second bent portions respectively, second gripping portions positioned at portions extending from front portions of said first bent portions to upper rear end portions of said second bent portions, and third gripping portions positioned at portions extending from lower rear end portions of said second bent portions to said second straight portions respectively, each of said second gripping portions being inclined at its front side inwardly and downwardly with respect to a forward extension line of each of said first bent portions, each of said third gripping portions being inclined at its front side inwardly with respect to a rearward extension line of each of said second straight portions.
Claim 2
Dependent Claim
305 words
In a drop type handle for a bicycle comprising a first bar body which has at its central portion a mounting portion for a handle stem and extends horizontally outwardly from both sides of said mounting portion, and a second pair of bar bodies which are formed in continuation of both lengthwise ends of said first bar body, the improvement wherein, when said handle is mounted on a handle stem of a bicycle in proper operating position for a drop type handle, said first bar body has at both lengthwise sides thereof first gripping portions, each of said first gripping portions being inclined at its lengthwise outer end in a direction rearwardly and downwardly with respect to said mounting portion and to first straight portions in continuation of said mounting portion, and said second bar bodies have first bent portions which are formed in continuation of both lengthwise ends of said first bar body and extend forwardly along a curve, second bent portions which are formed in continuation of foremost ends of said first bent portions and curved downwardly and rearwardly thereform, second straight portions which are formed in continuation of lower rear ends of said second bent portions respectively, second gripping portions positioned at portions extending from front portions of said first bent portions to upper rear end portions of said second bent portions, and third gripping portions positioned at portions extending from lower rear end portions of said second bent portions to said second straight portions respectively, each of said second gripping portions being inclined at its front side inwardly and downwardly with respect to a forward extension line of each of said first bent portions, each of said third gripping portions being inclined at its front side inwardly with respect to a rearward extension line of each of said second straight portions.
Claim 3
Dependent Claim
55 words
The improved drop type handle for a bicycle according to claim 1, wherein each of said first gripping portions makes an angle of inclination of 30° or its approximation rearwardly, and that of 10° or its approximation downwardly, with respect to said mounting portions and to each of said first straight portions in continuation thereof.
Claim 4
Dependent Claim
54 words
The improved drop type handle for a bicycle according to claim 1 or 2, wherein each of said second gripping portions makes an angle of inclination of 20° or its approximation inwardly, and that of 12° or the approximation downwardly, with respect to a forward extension line of each of said first bent portions.
Claim 5
Dependent Claim
47 words
The improved drop type handle for a bicycle according to claim 1, 2 or 3, wherein each of said third gripping portions makes an angle of inclination of 10° or its approximation inwardly with respect to the rearward extension line of each of said second straight portions.
Claim 6
Dependent Claim
57 words
The improved drop type handle for a bicycle according to claim 1, wherein said first bar body is formed with an elliptical cross section at both lengthwise sides with respect to said mounting portion, said cross section having a major axis and minor axis perpendicularly intersecting each other, said major axis being directed longitudinally of the bicycle.
Claim 7
Dependent Claim
47 words
The improved drop type handle for a bicycle according to claim 5, wherein the major axis of the cross section of said first bar body is arranged to be slanted at a front end stepwise downwardly with respect to a horizontal line outwardly from said mounting portion.
Claim 8
Dependent Claim
56 words
The improved drop type handle for a bicycle according to claim 5 or 6, wherein each of said first gripping portions at said first bar body has a swollen portion at one end at a side of said mounting portion, said swollen portion projecting downwardly from the lower side of each of said first gripping portions.
Claim 9
Dependent Claim
154 words
The improved drop type handle for a bicycle according to claim 1, wherein said first bar body is formed in an elliptical cross section at both lengthwise sides with respect to said mounting portion, and each of said second bar bodies, including said first and second bent portions and second straight portion, is formed in an elliptical cross section, said cross sections each having a major axis and minor axis perpendicularly intersecting each other, said major axis of the ellipse in cross section of said first bar body being directed longitudinally of a bicycle when said handle is mounted thereon, the major axis of the cross-section of each of said first bent portions and second straight portions at said second bar bodies being directed laterally of the bicycle, the major axis of the elliptical cross section of each of said second bent portions at said second bar bodies being directed longitudinally of the bicycle.
Claim 10
Dependent Claim
46 words
The improved drop type handle for a bicycle according to claim 8, wherein the major axis of the cross-section of said first bar body is arranged to be slanted at a front end stepwise downwardly with respect to a horizontal line outwardly from said mounting portion.
Claim 11
Dependent Claim
43 words
The improved drop type handle for a bicycle according to claim 8 or 9, wherein the major axis of the cross section of each of said second bar bodies is slanted to position an inner end upwardly with respect to an outer end.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-11 | 1988-09-10 | 1989-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-11 | 1992-09-10 | 1993-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-11 | 1996-09-10 | 1997-03-12 | $7700.00 | Window Closed / Lapsed |