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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0629471 (2000-07-31) |
우선권정보 | GB-0018813 (1999-08-11); GB-0008068 (2000-04-04) |
발명자 / 주소 |
|
대리인 / 주소 |
|
인용정보 | 피인용 횟수 : 3 인용 특허 : 10 |
A ladder is provided which has considerably reduced tendency to slip. Typically, the ladder 1 has rungs 5 and side members 2 with end caps 3 resting on the ground 4. Securing member 6, made typically from aluminium alloy, has friction member 7 provided with spikes 16. Pivot member 8 on the securing
1. A portable ladder having resistance to slippage on ground, which comprisesside members each having a lower end and rungs secured therebetween; a securing member which is pivotally attached to the lower ends of both side members; the securing member comprising a plate extending essentially complet
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