IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0522841
(2003-07-17)
|
등록번호 |
US-7305737
(2007-12-11)
|
우선권정보 |
NO-20023796(2002-08-09) |
국제출원번호 |
PCT/NO03/000249
(2003-07-17)
|
§371/§102 date |
20050315
(20050315)
|
국제공개번호 |
WO04/018232
(2004-03-04)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
14 인용 특허 :
3 |
초록
▼
A roller/foot device (1) comprising a cylindrical outer sleeve (10), a guide sleeve (20) arranged inside the outer sleeve (10), locking sleeve (30) arranged inside the outer sleeve (10), a spring device where one end abuts against the outer sleeve's closed end (13) and the other end abuts against on
A roller/foot device (1) comprising a cylindrical outer sleeve (10), a guide sleeve (20) arranged inside the outer sleeve (10), locking sleeve (30) arranged inside the outer sleeve (10), a spring device where one end abuts against the outer sleeve's closed end (13) and the other end abuts against one end portion of the guide sleeve or the locking sleeve and a roller element (41) which is rotatably mounted abutting against the locking sleeve's (20) end portion which is located at the extreme end of the outer sleeve (10). The sleeves comprise ribs which can slide towards each other and cause the roller element (41) to assume different positions in the longitudinal direction of the outer sleeve (10) when the device (1) is subjected to forces. The device (1) can thereby be employed as a roller device with the roller element (41) in an outer position and as a foot device with the roller element (41) in an inner position.
대표청구항
▼
The invention claimed is: 1. A roller/foot device (1), characterised in that it comprises a cylindrical outer sleeve (10) with one end completely or partly closed (13) by an end surface and one open (17) end, where the outer sleeve's inner wall comprise first elongated ribs (11), which ribs extend
The invention claimed is: 1. A roller/foot device (1), characterised in that it comprises a cylindrical outer sleeve (10) with one end completely or partly closed (13) by an end surface and one open (17) end, where the outer sleeve's inner wall comprise first elongated ribs (11), which ribs extend in the outer sleeve's longitudinal direction with inclined end portions (15) with a step (16) and which ribs are arranged in parallel with grooves between round the circumference of the sleeve (10), a guide sleeve (20) arranged inside the outer sleeve (10) where the guide sleeve's outer wall comprises second ribs (21) where the width of each of the second ribs is equal to or less than the grooves between the first ribs (11) and which second ribs have end portions comprising at least one inclined surface (22,23) and grooves (24) between the ribs (21) which grooves (24) similarly have end portions with at least one inclined surface (26,27), a locking sleeve (30) arranged inside the outer sleeve (10) further out towards the open end of the outer sleeve than the guide sleeve (20), where the outside of the locking sleeve comprises third ribs (31) having the same width and being arranged at the same distance apart as the second ribs (21) in the guide sleeve (20), and which locking sleeve have inclined end portions (32) at an angle which is adapted to the first ribs' inclined end portions (15) and which inclined end portions (32) abut against the second ribs' end portions (22), a spring device where one end abuts against the outer sleeve's closed end (13) and the other end abuts against one end portion of the guide sleeve, a roller element (41) which is rotatably mounted abutting against the locking sleeve's (20) end portion located at the extreme end of the outer sleeve (10), with the result that when the roller element (41) is subjected to a force that acts inwardly in the outer sleeve (10), the spring device will exert a counterforce which presses the roller element (41) towards the outer sleeve's open end, when the force that acts inwardly in the outer sleeve is sufficiently great (greater than the force from the spring device), the second ribs (21) on the guide sleeve will slide in the longitudinal direction in the grooves on the outer sleeve (10), the end portions (32) of the third ribs will slide towards the end portions (15) of the first ribs, thus generating a movement of the locking sleeve (30) in the circumferential direction, the movement in the circumferential direction being stopped by the third ribs (31) abutting against the steps (16) on the first ribs' end surfaces (15) in a position where the roller element (41) is in its first position, or against the first ribs' (11) side walls in a second position where the roller element (41) is in its second position, depending on the roller element's initial position before the roller element was subjected to a force, when the force acting inwardly in the outer sleeve (10) is less than the force from the spring device, the roller element is pressed into an outer, third position and when the roller element (41) is subjected to repeated forces in the inward direction, the roller element will assume a sequence of positions in the outer sleeve's longitudinal direction, where the roller element in the first position protrudes from the outer sleeve and in the second position is completely inside the outer sleeve. 2. A roller device according to claim 1, characterised in that it further comprises several ball bearings and a locking ring and that the locking sleeve is provided with a cup-shaped recess in the end facing out towards the outer sleeve's open end, the recess being adapted to receive the ball bearings and the roller element, and the locking ring is designed to be able to be clamped into the locking sleeve so that the ball bearings and the roller element are held against the recess in the locking sleeve. 3. A roller device according to claim 2, characterised in that it further comprises a bearing ring which is adapted to fit between the locking ring and the ball bearings. 4. A roller device according to claim 3, characterised in that the bearing ring comprises at least one spring mechanism. 5. A roller device according to claim 1, characterised in that the end portions of the second ribs on the guide sleeve comprise two inclined surfaces. 6. A roller device according to claim 1, characterised in that the roller element is made of a soft/flexible material surrounded by a harder material. 7. A roller device according to claim 1, characterised in that the outer sleeve also comprises tension devices for attachment to a piece of furniture. 8. A roller device according to claim 1, characterised in that a protective pad is provided on the edge of the outer sleeve's open end. 9. A roller device according to claim 8, characterised in that the pad is doughnut-shaped with an outer diameter equal to or larger than the outer sleeve's outer diameter.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.