IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0087728
(2007-01-24)
|
등록번호 |
US-8246267
(2012-08-21)
|
우선권정보 |
EP-06100777 (2006-01-24) |
국제출원번호 |
PCT/SE2007/000062
(2007-01-24)
|
§371/§102 date |
20081219
(20081219)
|
국제공개번호 |
WO2007/086795
(2007-08-02)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Combisafe International AB
|
대리인 / 주소 |
Birch, Stewart, Kolasch & Birch, LLP
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
3 |
초록
▼
A safety post mountable in a post holder includes an elongate tubular member and a locking device arranged inside of the tubular member. The locking device includes a lever and a bias spring device biasing the lever against an inner surface of the wall of the tubular member. The lever has a lock pro
A safety post mountable in a post holder includes an elongate tubular member and a locking device arranged inside of the tubular member. The locking device includes a lever and a bias spring device biasing the lever against an inner surface of the wall of the tubular member. The lever has a lock protrusion and a release protrusion extending through a first and second aperture portions of the wall, respectively. The lock protrusion is retractable to a release position inside of an outer surface of the tubular member by operation of the release protrusion in a counter biasing direction. The release protrusion has a support surface arranged to support the safety post against a support surface of the post holder, and the release protrusion is related to the lock protrusion such that, in the release position, the release protrusion is still protruding from said outer surface to an extent.
대표청구항
▼
1. A safety post comprising an elongate tubular member and a locking device arranged inside of the tubular member at a first end thereof, which is arranged to be received in a post holder, wherein said locking device includes a lever and a bias spring device biasing the lever against a first inner s
1. A safety post comprising an elongate tubular member and a locking device arranged inside of the tubular member at a first end thereof, which is arranged to be received in a post holder, wherein said locking device includes a lever and a bias spring device biasing the lever against a first inner surface of the wall of the tubular member, wherein the lever has a lock protrusion extending through a first aperture portion of said wall, and protruding from an outer surface of said wall, and a release protrusion extending through a second aperture portion of said wall, and protruding from said outer surface, wherein said release protrusion is arranged at a distance from said lock protrusion, and farther from said first end than the lock protrusion, wherein the lock protrusion is retractable to a release position inside of said outer surface of the tubular member by operation of the release protrusion in a counter biasing direction, in a first operation step requiring a first operation force exerted on said release protrusion, wherein said release protrusion has a support surface, which is arranged to support the safety post against said post holder, and wherein said release protrusion is related to said lock protrusion such that in the release position the release protrusion is still protruding from said outer surface, and wherein a non-protruding position of the release protrusion is obtained by a further operation of the release protrusion in the counter biasing direction, in a second operation step requiring a second operation force, which is distinctly higher than the first operation force, wherein said lever has an elongate major portion, extending substantially longitudinal of the tubular member, and comprising a first end of the lever, and a second end of the lever is an elongate end portion, connected with said major portion at an angle greater than 0° and less than 180° wherein in the first operation step the release protrusion is depressed such that the first end engages and pivots about the first inner surface of the wall such that the second end approaches and engages an opposite inner surface of the wall, and in the second operation step the second end engages and pivots about the opposite inner surface of the wall such that the first end approaches the opposite inner surface of the wall. 2. A safety post according to claim 1, wherein the said elongate end portion is connected at an angle of 90° relative to said elongate major portion. 3. A safety post according to claim 1, wherein the spring constant of said bias spring device is larger during said second operation step than during said first operation step. 4. A safety post according to claim 3, wherein said bias spring device comprises a primary spring element, which provides said biasing, and an secondary spring element, which is in operation in common with said primary spring element during said second operation step. 5. A safety post according to claim 3, wherein said bias spring device comprises at least one spring, which has a primary spring section and a secondary spring section, which is connected in series with said first spring section, and which has a larger spring constant than the primary spring section. 6. A safety post according to claim 1, wherein said lock protrusion has an oblique snap-in surface. 7. A safety post according to claim 1, wherein the second end of the lever extends in a radial direction perpendicular to a longitudinal axis of the tubular member. 8. A safety post according to claim 1, wherein said lever is suspended such that, during said first operation step, said first operation force forms a first lever arm between the release protrusion and the first end of the lever, and a counter acting force generated by said bias spring device forms a second lever arm between the bias spring device and the first end of the lever; during said second operation step, the second operation force forms a third lever arm between the release protrusion and the second end of the lever, and a counter acting force generated by said bias spring device forms a fourth lever arm between the bias spring device and the second end of the lever; and a ratio of the first lever arm to the second lever arm is bigger than a ratio of the third arm to the fourth arm. 9. A safety post according to claim 1, wherein the bias spring device is positioned between the release protrusion and the first end of the lever. 10. A safety post according to claim 7, wherein an axial dimension of the tubular member in the radial direction is substantially equal to a sum of axial dimensions of the second end and the lock protrusion in the radial direction.
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