IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0843683
(2004-05-11)
|
등록번호 |
US-7703465
(2010-05-20)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
8 인용 특허 :
16 |
초록
▼
A locking assembly is disclosed for use with a walker or a rollator having foldable side members. The locking assembly includes a locking pin movable between a first position in which the corresponding side member is held in a locked, unfolded state and a second position in which the side member is
A locking assembly is disclosed for use with a walker or a rollator having foldable side members. The locking assembly includes a locking pin movable between a first position in which the corresponding side member is held in a locked, unfolded state and a second position in which the side member is in an unlocked, folded state. A lock plate extends transversely to the longitudinal axis of the corresponding side member, and includes an aperture adapted to receive a locking end of the locking pin when the pin is in its first position. A lever is coupled to the locking pin such that when the lever is pivoted by upwardly applied pressure, the locking pin is moved from its first position to its second position to permit rotation of the corresponding side member to its folded state.
대표청구항
▼
What is claimed is: 1. A foldable rollator comprising: a pair of side frames, each of the side frames having front and rear legs, a hand grip for grasping the side frame, and a pair of wheels associated with the front legs; a cross brace interconnecting the pair of side frames, the side frames bein
What is claimed is: 1. A foldable rollator comprising: a pair of side frames, each of the side frames having front and rear legs, a hand grip for grasping the side frame, and a pair of wheels associated with the front legs; a cross brace interconnecting the pair of side frames, the side frames being pivotable with respect to the cross brace to move between a first position perpendicular to the cross brace and a second position parallel to the cross brace; and a locking assembly associated with each side frame for selectively locking the side frames in the first position perpendicular to the cross brace, the locking assembly including an actuating lever proximate to the hand grip and extending from the front leg toward the rear leg and further comprising a locking pin the actuating lever having a first end directed toward the rear leg, which first end is graspable by a user's hand to unlock the locking assembly by applying an upward force on the first end of the actuating lever without moving the user's hand from the hand grip, the actuating lever pivotally coupled to the associated side frame at a second end opposite the first end, the locking pin pivotally coupled to the actuating lever between the first and second ends. 2. The rollator of claim 1, wherein the locking assembly further comprises: a housing having a bore, the locking pin extending through the bore; and a locking plate connected to an end sleeve of the cross brace, the locking plate including an aperture for receiving the locking pin. 3. The rollator of claim 2, wherein the locking plate extends substantially transversely to the longitudinal axis of a front leg of the side frame. 4. The rollator of claim 2, wherein the housing includes a second bore for receiving a front leg of the side frame. 5. The rollator of claim 2, further comprising a spring for biasing the locking pin towards the locking plate. 6. The rollator of claim 2, further comprising an elongate member connecting the actuating lever and the locking pin. 7. The rollator of claim 6, wherein the elongate member is pivotally attached to the actuating lever. 8. The rollator of claim 2, wherein the actuating lever is pivotally attached at an end to the housing. 9. The rollator of claim 1, further comprising a second pair of wheels associated with the rear legs. 10. A foldable rollator comprising: a pair of side frames, each of the side frames having front and rear legs, a hand grip for grasping the side frame, and a pair of wheels associated with the front legs; a cross brace interconnecting the pair of side frames, the side frames being pivotable with respect to the cross brace to move between a first position perpendicular to the cross brace and a second position parallel to the cross brace; and a locking assembly associated with each side frame for selectively locking the side frames in the first position perpendicular to the cross brace, the locking assembly including an actuating lever proximate to the hand grip, the actuating lever being graspable by a user's hand to unlock the locking assembly without moving the user's hand from the hand grip, wherein the locking assembly further comprises: a housing; a locking pin extending through a bore in the housing; and a locking plate connected to an end sleeve of the cross brace, the locking plate including an aperture for receiving the locking pin, further comprising an elongate member connecting the actuating lever and the locking pin, wherein the elongate member is pivotally attached to the actuating lever, wherein the elongate member is pivotally attached to the locking pin. 11. A foldable rollator comprising: a pair of side frames each having a substantially vertical front leg and a substantially vertical rear leg; wheels attached to lower ends of the front legs; a cross brace having a pair of substantially vertical end sleeves, wherein each front leg is concentric with and held in a distinct one of said end sleeves so that said front legs are rotatable in relation to said cross brace between a locked state and an unlocked state; a locking assembly associated with a front leg and corresponding end sleeve, said locking assembly comprising: a housing secured to said front leg; a locking pin extending through a first bore in said housing, said locking pin being movable between a first position in which said front leg and end sleeve are in the locked state and incapable of rotating in relation to each other and a second position in which said front leg and said end sleeve are in an unlocked state and incapable of rotating in relation to each other; a lock plate connected to said end sleeve and extending substantially transversely to the longitudinal axis thereof, said lock plate having an aperture adapted to receive a locking end of said locking pin when said locking pin is in the first position; and an actuating lever pivotally coupled to said housing, said lever having a force applying handle end away from the housing toward the rear leg, and a housing attach end operatively connected to the housing, a portion of the actuating lever between the force applying handle end, and the housing attach end being coupled to said locking pin, wherein a substantially upward force applied to the force applying handle end pivots said actuating lever with respect to said housing member and moves said locking pin upwardly to its second position allowing said front leg to be rotated relative to the cross brace, the actuating lever pivotally coupled to the associated side frame at a pivot end opposite the force applying handle end, the locking pin coupled to the actuating lever between the pivot end and the force appying handle end. 12. The foldable rollator of claim 11, wherein the housing includes a second bore through which extends the front leg, longitudinal axes of the first and second bores being substantially parallel to each other. 13. The foldable rollator according to claim 12, wherein the housing attach end of the actuating lever includes a third bore through which extends the leg, wherein said first and third bores are in alignment. 14. The foldable rollator according to claim 11, further comprising a spring for biasing said locking pin towards said first position, said spring adapted to be received in a recessed portion of said first bore and having a first end operatively engaging said locking pin and a second end operatively engaging a shoulder seat of said recessed portion. 15. The foldable rollator according to claim 11, further comprising an elongate member coupled between the portion of said actuating lever and said locking pm. 16. The foldable rollator according to claim 15, wherein the elongate member is pivotally attached to the portion of the actuating lever. 17. The foldable rollator according to claim 11, wherein the housing attach end of the actuating lever includes an extension portion extending therefrom, and the housing includes a recessed portion dimensioned to receive the extension portion, the extension portion and the recessed portion providing a fulcrum about which the actuating lever pivots relative to the housing. 18. The foldable rollator according to claim 17, wherein the extension portion includes a bulbous end received by the recessed portion of the housing. 19. The foldable rollator according to claim 11, wherein each side frame includes a substantially horizontal portion and a hand grip connected thereto. 20. The foldable rollator according to claim 11, further comprising wheels attached to lower ends of the rear legs. 21. A foldable rollator comprising: a pair of side frames each having a substantially vertical front leg and a substantially vertical rear leg; wheels attached to lower ends of the front legs; a cross brace having a pair of substantially vertical end sleeves, wherein each front leg is concentric with and held in a distinct one of said end sleeves so that said front legs are rotatable in relation to said cross brace between a locked state and an unlocked state; a locking assembly associated with a front leg and corresponding end sleeve, said locking assembly comprising: a housing secured to said front leg; a locking pin extending through a first bore in said housing, said locking pin being movable between a first position in which said front leg and end sleeve are in the locked state and incapable of rotating in relation to each other and a second position in which said front leg and said end sleeve are in an unlocked state and incapable of rotating in relation to each other; a lock plate connected to said end sleeve and extending substantially transversely to the longitudinal axis thereof, said lock plate having an aperture adapted to receive a locking end of said locking pin when said locking pin is in the first position; and an actuating lever pivotally coupled to said housing, said lever having a force applying handle end and a housing attach end operatively connected to the housing, a portion of the actuating lever between the force applying handle end and the housing attach end being coupled to said locking pin, wherein a substantially upward force applied to the handle end pivots said actuating lever with respect to said housing member and moves said locking pin to its second position allowing said front leg to be rotated relative to the cross brace, further comprising an elongate member coupled between the portion of said actuating lever and said locking pin, wherein the elongate member is pivotally attached to the locking pin.
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