IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0509262
(2006-08-24)
|
등록번호 |
US-7490684
(2009-02-17)
|
발명자
/ 주소 |
- Seymour,Craig A.
- Seymour,Gretchen
|
출원인 / 주소 |
- Seymour,Craig A.
- Seymour,Gretchen
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
10 인용 특허 :
11 |
초록
▼
An infant stroller that can propel itself under its own power, or in other circumstances provide propulsion assistance to aid the stroller attendant so as to reduce the required effort to push a stroller over various types of terrain. The stroller having a base frame formed of a plurality of connect
An infant stroller that can propel itself under its own power, or in other circumstances provide propulsion assistance to aid the stroller attendant so as to reduce the required effort to push a stroller over various types of terrain. The stroller having a base frame formed of a plurality of connected substantially rigid formed tubular or molded plastic members, the frame adapted to fold for storage. Provided on the frame and interfacing with the ground are a plurality of wheels of which at least one wheel is an electrically driven wheel. The stroller includes two handle arms secured to the rear portion of the frame with a handle grip bar secured to an upper portion of the arms. The handle grip has a battery compartment for receiving a rechargeable battery pack therein. The stroller includes an electrically powered drive means for providing power assist to drive one or more driven wheels over sometimes hilly, grassy or rough terrain. Once discharged, the battery can be removed and replaced with a recharged battery, or on certain embodiments the stroller can also recharge while exposed to direct sunlight. The attendant controls the stroller's electric drive by manipulating a motor control bar located near the stroller handle grip.
대표청구항
▼
What is claimed is: 1. A self-propelled electrically powered stroller for transporting one or more infants, the stroller comprising: a stroller frame configured to support the weight of an infant, the frame comprising: a base frame comprising a plurality of connected substantially rigid formed elon
What is claimed is: 1. A self-propelled electrically powered stroller for transporting one or more infants, the stroller comprising: a stroller frame configured to support the weight of an infant, the frame comprising: a base frame comprising a plurality of connected substantially rigid formed elongated members, the base frame adapted to fold for storage; a plurality of wheels wherein at least one wheel is a driven wheel, the wheels rotably secured to the stroller frame, the wheels arranged to stably and rollably support the stroller frame upon ground; a handle assembly comprising: two elongated substantially rigid handle arms, the arms having an upper and an opposing lower end, the arms foldably secured at a lower end to the rear portion of the base frame; and a handle grip bar having a battery receiving compartment with electrical contacts secured therein, the handle grip bar secured along opposing end portions to the upper ends of the elongated handle arms, the handle grip bar configured to be grasped by a human hand for guiding or pushing the stroller; an electrically powered drive means for driving the at least one driven wheel so as to propel the stroller over the ground, the drive means secured to the stroller frame; a rechargeable battery pack for storing and supplying electrical energy to power the drive means, the battery pack removably secured within the battery receiving compartment of the handle grip bar, the battery pack having electrical contacts thereon for electrically engaging with the contacts in the battery compartment; one or more infant seats secured to the base frame so as to ride upon the frame and wheels; a canopy positioned above the infant seats, the canopy secured to the stroller frame, the canopy configured to shelter the infant seat from sun rays and rain; a safety power interrupt device, the safety power interrupt device comprising: a safety switch device secured to the handle grip bar; a safety key removably received into the safety switch, wherein removing the safety key from the switch interrupts electrical power from the battery to the drive means such as to stop the drive means, wherein frictional and rotary inertia of the drive means brakes rolling motion of the stroller; and a lanyard having two ends, one end secured to the safety key, an opposing end having a hook secured thereto, the hook configured to retentively engage onto a stroller operator, the lanyard and safety key cooperating so as to pull the safety key out of the safety switch if stroller gets away from the operator so as to brake the stroller; and a drive motor control means, the drive motor control means comprising: a spring return electrical drive off-on switch for selectably providing or interrupting electrical power from the battery to the drive means; and a motor control bar distally spaced from and substantially parallel to the handle grip bar, the motor control bar positioned and configured to be operable by attendant's fingers, wherein the attendant has a palm of a hand resting on the grip bar and wherein the attendant manipulates the motor control bar with fingers of the hand, the motor control bar connected to the electrical drive switch wherein compressing the motor control bar against the handle grip provides power to the drive means and wherein releasing the hand compression on the motor control bar interrupts the power. 2. The stroller of claim 1, wherein the frame material is selected from the group consisting of tubular aluminum, tubular steel, reinforced plastic; and wherein the wheels comprise rubber treads secured over plastic wheels. 3. The stroller of claim 2, wherein the electrically powered drive means comprises: a wheel drive shaft, the shaft rotably and torsionally connected to the at least one driven wheel; a gear reduction transmission having an input shaft and an output shaft, the output shaft connected to the wheel drive shaft wherein the output shaft transmits rotary motion and torque to the wheel drive shaft, the gear reduction transmission secured to the stroller frame; and an electric drive motor having a drive shaft, the drive motor secured to the gear reduction transmission, the motor drive shaft connect to the input shaft of the transmission, wherein the motor transmits rotary motion and torque to the input shaft. 4. The stroller of claim 3, wherein the transmission further comprises a foot operated means of selectively engaging/disengaging the transmission output shaft from the wheel drive shaft, wherein disengaging the transmission permits the stroller to be manually propelled without electrical power. 5. The stroller of claim 4, wherein the plurality of wheels consists of four wheels, and wherein the base frame comprise a back member secured to two opposing side members, each side of the frame having two wheels located generally at opposing ends of the side member. 6. The stroller of claim 5 further comprising a solar cell assembly secured to a top portion of the canopy, the solar cell assembly providing electrical power to charge the battery pack. 7. The stroller of claim 5 wherein the battery pack is a 24 volt rechargeable storage battery pack, and wherein the motor comprises a 12 to 19 volt electric motor. 8. The stroller of claim 7 wherein the at least one driven wheel comprises one driven rear wheel. 9. The stroller of claim 7, wherein the at least one driven wheel comprises two driven opposing rear wheels, and wherein the wheel drive shaft extends between the two driven wheels, wherein at least one driven wheel further comprise drive teeth disposed on an inner facing perimeter of the wheel, the drive teeth engaging with a ratchet pawl drive connected to an end of the wheel drive shaft, wherein the pawl driven wheel is permitted to rotate faster than non-pawl driven wheel such that the stroller can be easily steered while rolling. 10. The stroller of claim 7 further comprising a 24 volt solar cell assembly secured to a top portion of the canopy, the solar cell assembly electrically connected to the battery terminals in the battery receiving compartment, the solar cell assembly providing electrical power to charge the 24 volt battery pack.
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