USO0RE39159E
(19) United States (12) Reissued Patent
(10) Patent Number: US RE39,159 E (45) Date of Reissued Patent: *Jul. 11, 2006
Klassen et a]. (54)
BICYCLE WHEEL TRAVEL PATH FOR
(56)
References Cited
SELECTIVELY APPLYING CHAINSTAY LENGTHENING EFFECT AND APPARATUS
U~S~ PATENT DOCUMENTS
FOR PROVIDING SAME
(75)
Inventors: James B. Klassen, Calgary (CA); Jamie W. Calon, Calgary (CA)
(73)
Assignee: Santa Cruz Bicycles, Inc., Santa Cruz,
712,784 A
* 11/1902
Ellis ......................... .. 280/284
944,795 A
* 12/1909
Leet et a1. ................ .. 280/284
4,671,525 A * 6/1987 Ribi ......................... .. 280/284 4,789,042 A * 12/1988 Pitts ..... .. 180/231 4,789,174 A
CA (Us) >i<
( )
'
.
Nome‘
Filed:
280/284
280/284
5,259,637 A
~
~
~
~
-
* 11/1993 Busby ...................... .. 280/284
5,306,036 A
*
4/1994
Busby ...................... .. 280/284
5,409,249
*
4/1995
Busb
A
280/284
Tlhls Patent 15 Sublect to a tenmnal (115'
5,452,910 A * 9/1995 Harri: ............ ..
C almer'
5,791,674 A
(21) App1_ NO; 10/402,410 (22)
* 12/1988 LaWWill
5,121,937 A * 6/1992 LaWWill
*
8/1998
280/284
D’Aluisio et a1. ........ .. 280/284
FOREIGN PATENT DOCUMENTS
Mar- 27, 2003
Related US. Patent Documents
DE
692011
*
5/1940
............... .. 280/284
FR
933079
*
4/1948
............... .. 280/284
* Cited by examiner
Reissue of:
(64) Patent NO; Issued; Appl, NO; Filed: 63
6,206,397
Primary ExamineriKevin Hurley
Mar, 27, 2001 09/039,135 Mar. 13, 1998
(74) Attorney, Agent, or FirmiRobert O. Intellectual Property LaW Of?ces (57) ABSTRACT
Continuation-in- art of a
lication No. 08/724 303 ?led 0n
( ) Sep‘ 19, 1996, HEW abanlzllgned, which is a coIitinuratiomim part of application No‘ 05,558,162, ?led on NOV‘ 15, 1995,
(51)
~
~
A rear suspension system for a bicycle. The system directs the rear'Wheel along a predetermined, S-shaped path as the
now Pat. No. 5,628,524, which is a continuation-in-part of
suspens10n 15 Compressed The Path 15 Con?gured to PrOVlde
application No. 08/377,931, ?led on Jan. 25, 1995, nOW Pat.
a chainstay lengthening effect only at those points Where this
NO' _5’_553’881' _
(60)
'
Guillot;
_
is needed to counterbalance the pedal inputs of the rider; at
5332131011211 apphcanon NO‘ 60/040’702’ ?led on Mar‘ 13’ ' IIlt- Cl-
B 62K 25/28
those points on the Wheel travel path Where there is a chainstay lengthening e?‘ect, the chain tension Which results from the pedal inputs exerts a doWnWard force on the rear
(2006-01)
Wheel, preventing unwanted compression of the suspension.
(52)
US. Cl. ...................................... .. 280/284; 280/283
mounted adjacent the bottom bracket shell to provide the
(58)
Field of Classi?cation Search ............... .. 280/283,
desired Control Characteristics
The system employs a dual eccentric crank mechanism
280/284, 285, 286, 275 See application ?le for complete search history.
15 Claims, 26 Drawing Sheets
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FIG. 5
520
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52b
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FIG. 80%)‘,@272 mm.”
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FIG. 9
FIG. IO 22
Sheet 8 0f 26
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Sheet 9 0f 26
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U.S. Patent
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FIG. IZA
Sheet 10 0f 26
FIG. I35
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FIG. I3D
US RE39,159 E
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FIG. I4A
Sheet 11 0f 26
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U.S. Patent
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Sheet 14 0f 26
US RE39,159 E
FIG. l7 PRIOR ART I8
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FIG. 22
Sheet 18 0f 26
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342
320
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354b 350 360
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324b 344 ~ -348
364d 354d 366d 3552 362
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Sheet 19 0f 26
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US RE39,159 E
