IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0873161
(2010-08-31)
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등록번호 |
US-8316999
(2012-11-27)
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발명자
/ 주소 |
- Solinski, Andrew L.
- Sorzano, Todd D.
- Pike, Robert T.
- Dotsey, Michael A.
|
출원인 / 주소 |
- Graco Children's Products Inc.
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대리인 / 주소 |
Lempia Summerfield Katz LLC
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인용정보 |
피인용 횟수 :
4 인용 특허 :
4 |
초록
▼
A brake assembly for a stroller has a wheel rotatable about a wheel axis and a plurality of pockets on the wheel spaced from and circumferentially around the wheel axis. A brake lever has an actuator arm and a link arm fixedly connected to one another and is movable between a braking orientation and
A brake assembly for a stroller has a wheel rotatable about a wheel axis and a plurality of pockets on the wheel spaced from and circumferentially around the wheel axis. A brake lever has an actuator arm and a link arm fixedly connected to one another and is movable between a braking orientation and a released orientation. A boss is driven by the link arm between a braking position and a released position corresponding respectively to the braking and released orientations of the brake lever. A biasing mechanism is configured to bias and retain the boss into engagement with one of the plurality of pockets when the brake lever is moved to the braking orientation and to bias and retain the boss out of engagement with the plurality of pockets when the brake lever is moved to the released position.
대표청구항
▼
1. A brake assembly for a stroller comprising: a stroller wheel rotatable about a wheel axis;a plurality of pockets on the wheel spaced from and circumferentially around the wheel axis;a brake lever having an drive arm and a link arm fixedly connected to one another, the brake lever movable between
1. A brake assembly for a stroller comprising: a stroller wheel rotatable about a wheel axis;a plurality of pockets on the wheel spaced from and circumferentially around the wheel axis;a brake lever having an drive arm and a link arm fixedly connected to one another, the brake lever movable between a braking orientation and a released orientation;a boss driven by the link arm between a braking position and a released position corresponding respectively to the braking and released orientations of the brake lever; anda biasing mechanism configured to bias and retain the boss in one direction into engagement with one of the plurality of pockets when the brake lever is moved to the braking orientation and to bias and retain the boss in another direction out of engagement with the plurality of pockets when the brake lever is moved to the released position. 2. A brake assembly according to claim 1, wherein the plurality of pockets is formed on a surface of a center hub on the wheel, each of the plurality of pockets facing radially inward toward the wheel axis. 3. A brake assembly according to claim 1, wherein the actuator arm is a pedal arm and has a foot pad is carried on a distal end. 4. A brake assembly according to claim 1, wherein the wheel is rotatable about an axle. 5. A brake assembly according to claim 4, wherein the axle is received through an oblong slot of a shuttle and the wheel is mounted for rotation on the axle. 6. A brake assembly according to claim 1, wherein the biasing mechanism has a spring, an over-center link, a slidable shuttle connected to the over-center link and to the brake lever, the boss being carried on the shuttle and the spring connected to the over-center link and the shuttle. 7. A brake assembly according to claim 1, wherein the brake lever has an elbow between the actuator arm and the link arm and is pivotable about a lever axis spaced from the wheel axis. 8. A brake system for a stroller comprising: a first wheel rotatable on an axle on one side of the stroller;a brake actuator pivotally movable about a pivot point spaced radially from the axle between a braking orientation and a released orientation; anda first brake assembly that can be actuated by the brake actuator, the first brake assembly including a plurality of pockets on the first wheel spaced radially outward from and circumferentially around the axle;a first shuttle movable along a linear path perpendicular to the axle between a braking position and a released position corresponding respectively to the braking and released orientations of the brake actuator, the brake actuator having one end pivotally connected to the first shuttle;a first boss projecting from the first shuttle and configured to seat in any one of the plurality of pockets in the braking position; anda first over-center linkage coupled to the first shuttle and the brake actuator,wherein the first over-center linkage biases the first boss into engagement with one of the plurality of pockets when the brake actuator is moved to the braking orientation, andwherein the first over-center linkage biases the first boss out of engagement with the plurality of pockets when the brake actuator is moved to the released position. 9. A brake system according to claim 8, further comprising: a second wheel on a second side of the stroller opposite the one side; anda second brake assembly associated with the second wheel including a plurality of pockets on the second wheel, a second shuttle, a second boss, and a second over-center linkage, the brake actuator operable to simultaneously actuate the first and second brake assemblies. 10. A brake system according to claim 9, further comprising a cable interconnecting the first and second shuttles and extending between the sides of the stroller within a frame cross-member. 11. A brake system according to claim 8, wherein the first over-center linkage includes an over-center link rotatable about a rotation axis of the axle and a spring connected to the first shuttle and to the over-center link. 12. A brake system according to claim 8, wherein the first shuttle has a body with a slot, the axle extending through the slot and the shuttle slidable perpendicular to the axle to the extent of the slot. 13. A brake assembly for a stroller comprising: a stroller wheel rotatable about a wheel axis;a plurality of pockets on the wheel spaced from and circumferentially around the wheel axis;a brake lever having a drive arm and a link arm fixedly connected to one another, the brake lever movable between a braking orientation and a released orientation;a boss driven by the link arm between a braking position and a released position corresponding respectively to the braking and released orientations of the brake lever; anda biasing mechanism configured to bias and retain the boss into engagement with one of the plurality of pockets when the brake lever is moved to the braking orientation and to bias and retain the boss out of engagement with the plurality of pockets when the brake lever is moved to the released position,wherein the biasing mechanism has an over-center link with a central opening concentric with the wheel axis, the over center link having one end coupled to a spring and an opposite end coupled to a slidable shuttle which carries the boss and which is pivotally connected to the brake lever. 14. A brake assembly according to claim 13, wherein the spring is a torsion spring with one leg connected to the over-center link and another leg connected to the shuttle. 15. A brake assembly according to claim 13, wherein the shuttle slides along a linear path aligned with and perpendicular to the wheel axis. 16. A brake assembly for a stroller comprising: a stroller wheel rotatable about a wheel axis;a plurality of pockets on the wheel spaced from and circumferentially around the wheel axis;a brake lever having a drive arm and a link arm fixedly connected to one another, the brake lever movable between a braking orientation and a released orientation;a boss driven by the link arm between a braking position and a released position corresponding respectively to the braking and released orientations of the brake lever;a biasing mechanism configured to bias and retain the boss into engagement with one of the plurality of pockets when the brake lever is moved to the braking orientation and to bias and retain the boss out of engagement with the plurality of pockets when the brake lever is moved to the released position; anda shuttle movable along a linear path perpendicular to the wheel axis and pivotally connected to a distal end of the link arm, the shuttle being movable between the braking and released positions, the boss affixed to and projecting from the shuttle. 17. A brake assembly according to claim 16, wherein the boss is a pin that is oriented parallel to the wheel axis and protrudes from a surface of the shuttle facing the plurality of pockets. 18. A brake assembly for a stroller comprising: a stroller wheel mounted for rotation on an axle defining a wheel axis;a plurality of pockets on the wheel spaced from and circumferentially around the wheel axis;a brake lever having a drive arm and a link arm fixedly connected to one another, the brake lever movable between a braking orientation and a released orientation;a boss driven by the link arm between a braking position and a released position corresponding respectively to the braking and released orientations of the brake lever; anda biasing mechanism configured to bias and retain the boss into engagement with one of the plurality of pockets when the brake lever is moved to the braking orientation and to bias and retain the boss out of engagement with the plurality of pockets when the brake lever is moved to the released position,wherein the axle is received through an oblong slot of a shuttle, andwherein the boss is carried on the shuttle, which is pivotally connected to the link arm and movable in a linear path perpendicular to the wheel axis between the braking and released positions. 19. A brake assembly for a stroller comprising: a stroller wheel rotatable about a wheel axis;a plurality of pockets on the wheel spaced from and circumferentially around the wheel axis;a brake lever having a drive arm and a link arm fixedly connected to one another, the brake lever movable between a braking orientation and a released orientation;a boss driven by the link arm between a braking position and a released position corresponding respectively to the braking and released orientations of the brake lever; anda biasing mechanism configured to bias and retain the boss into engagement with one of the plurality of pockets when the brake lever is moved to the braking orientation and to bias and retain the boss out of engagement with the plurality of pockets when the brake lever is moved to the released position,wherein the biasing mechanism has a torsion spring with one leg connected to a slidable shuttle and another leg connected to an over-center link rotatable about the wheel axis. 20. A stroller wheel brake system comprising: two wheels, one on each side of a stroller frame and each with a center hub defining a wheel axis;a plurality of pockets spaced radially outward from and circumferentially around the wheel axis on each of the two wheels;a brake lever mounted adjacent one of the two wheels and movable between a braking orientation and a released orientation;a shuttle adjacent each of the two wheels, each shuttle movable along a path perpendicular to the wheel axis between a braking position and a released position corresponding respectively to the braking and released orientations of the brake lever;a brake boss on each of the shuttles;a cable extending between and connected to each of the shuttles; anda biasing mechanism coupled to each of the shuttles configured to bias each brake boss in one direction into engagement with a pocket on the respective wheel when the brake lever is moved to the braking orientation and to bias each brake boss in a direction opposite the one direction out of engagement with the plurality of pockets on the respective wheel when the brake lever is moved to the released position.
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