Patent US4534938A successfully refreshed from Google Patents.
Patent US5785339A successfully refreshed from Google Patents.
US5785339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspension device for a bicycle
Assignee: Itochu Corp
•
Filing: 1996-10-21
•
Granted: 1998-07-28
•
Expires: 2016-10-21
Abstract
Abstract According to the present invention, there is provided a suspension device for a bicycle comprising a center frame for supporting a saddle; a front frame for supporting a front wheel at a first end of the front frame, the front frame being secured to the center frame at a second end of the front frame so as to pivot about a first pivot axis; a rear frame for supporting a rear wheel at a first end of the rear frame, the rear frame being secured to the center frame at a second end of the rear frame so as to pivot about a second pivot axis different from and spaced from the first pivot axis; and a plate spring which is secured to the front frame at a first end of the plate spring, is secured to the rear frame at a second end of the plate spring, and is fixed to the center frame at an intermediate portion of the plate spring, whereby the front and rear frames are resiliently supported relative to the center frame by means of the plate spring.
Inventors
- 👤 Atsushi Mamiya
- 👤 Naoki Tsuji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:25
CPC Classifications
B; B62; B62K; B62K25/00; B62K25/04; B62K25/28; B62K3/00; B62K3/02; B62K3/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
175 words
A suspension device for a bicycle, comprising; a center frame for supporting a saddle; a front frame for supporting a front wheel at a first end of said front frame, said front frame being secured to said center frame at a second end of said front frame so as to pivot about a first pivot axis; a rear frame for supporting a rear wheel at a first end of said rear frame, said rear frame being secured to said center frame at a second end of said rear frame so as to pivot about a second pivot axis different from and spaced from said first pivot axis; and a plate spring which is secured to said front frame at a first end of said plate spring, is secured to said rear frame at a second end of said plate spring, and is fixed to said center frame at an intermediate portion of said plate spring, whereby said front and rear frames are resiliently supported relative to said center frame by means of said plate spring.
Claim 2
Dependent Claim
175 words
A suspension device for a bicycle, comprising; a center frame for supporting a saddle; a front frame for supporting a front wheel at a first end of said front frame, said front frame being secured to said center frame at a second end of said front frame so as to pivot about a first pivot axis; a rear frame for supporting a rear wheel at a first end of said rear frame, said rear frame being secured to said center frame at a second end of said rear frame so as to pivot about a second pivot axis different from and spaced from said first pivot axis; and a plate spring which is secured to said front frame at a first end of said plate spring, is secured to said rear frame at a second end of said plate spring, and is fixed to said center frame at an intermediate portion of said plate spring, whereby said front and rear frames are resiliently supported relative to said center frame by means of said plate spring.
Claim 3
Dependent Claim
25 words
A suspension device for a bicycle according to claim 1, wherein said pivot axes are on opposite sides of the plane of said plate spring.
Claim 4
Dependent Claim
41 words
A suspension device for a bicycle according to claim 1, comprising a bump stopper mechanism to limit the extent of the pivoting motion of said front frame, said bump stopper mechanism being constituted by said front frame and said center frame.
Claim 5
Dependent Claim
41 words
A suspension device for a bicycle according to claim 1, comprising a bump stopper mechanism to limit the extent of the pivoting motion of said rear frame, said bump stopper mechanism being constituted by said rear frame and said center frame.
Claim 6
Dependent Claim
22 words
A suspension device for a bicycle according to claim 1, wherein a driving force input mechanism is provided in said center frame.
Claim 7
Dependent Claim
20 words
A suspension device for a bicycle according to claim 5, wherein said driving force input mechanism is a pedal crank.
Claim 8
Dependent Claim
24 words
A suspension device for bicycle according to claim 1, wherein a bearing portion for bearing a pedal crank is provided in said rear frame.
References Cited (Backward Citations)
US519855A
Cited
GB175955A
Cited
US2187238A
Cited
JPS5069735A
Cited
JPS5088746A
Cited
JPS5755254A
Cited
JPS59137269A
Cited
JPS59171773A
Cited
JPS61268577A
Cited
US4732404A
Cited
JPS6364889A
Cited
JPH01117988A
Cited
US5417445A
Cited
JPH0438288A
Cited
JPH0471979A
Cited
JPH0495595A
Cited
JPH05278666A
Cited
JPH0616186A
Cited
US5498013A
Cited
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 |