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US 6,607,054 B1Granted
Safety device
AssigneeRota Limited
InventorJohn Sidney Lindfield
Life of this patent
Estimating the term…
Abstract
There is provided a sealing device with a support portion and a sealing member. The support portion has a cover plate and a peripheral wall. In the center of the support portion is a central boss which is provided with a blind hole. The boss also has an arm which can be rotated about the boss due to a retaining plate. The blind hole in the boss can be used for receiving stems of various equipment, such as bars, railings, or ladders.
Claims3
A safety device comprising:
- a vacuum anchor having a sealing member to contact a surface;
- a support portion attached to said sealing member, said support portion having a boss adapted to interchangeably receive additional equipment;
- wherein said support portion comprises a radially extending arm rotatably mounted on said boss;
- a vacuum assembly being operable to produce a vacuum below said sealing member such that said safety device is held with respect to the surface by suction, and a removable retaining plate, wherein said radially extending arm has a collar portion disposed around said boss, said collar portion being retained by said removable retaining plate,
- wherein said boss has a central blind bore extending axially therein to allow insertion of a mating part of the additional equipment, said central blind bore being independent of said vacuum assembly,
- said sealing member comprises a base plate attached to said boss, and a sealing ring secured with respect to said base plate and extending about a periphery of said base plate,
- said sealing ring has a pair of concentric main sealing lips and an additional secondary peripheral sealing lip disposed radially outward from said pair of concentric main sealing lips, and
- said additional secondary peripheral sealing lip has an outward facing surface which has at least one peripheral reinforcing rib.
5 more elements
A safety device comprising:
- a vacuum anchor having a sealing member to contact a surface;
- a support portion attached to said sealing member, said support portion having a boss adapted to interchangeably receive additional equipment, wherein said support portion comprises a radially extending arm rotatably mounted on said boss;
- a vacuum assembly being operable to produce a vacuum below said sealing member such that said safety device is held with respect to the surface by suction, and a removable retaining plate, wherein said radially extending arm has a collar portion disposed around said boss, said collar portion being retained by said removable retaining plate,
- wherein said boss has a central blind bore extending axially therein to allow insertion of a mating part of the additional equipment, said central blind bore being independent of said vacuum assembly,
- said sealing member comprises a base plate attached to said boss, and a sealing ring secured with respect to said base plate and extending about a periphery of said base plate,
- said sealing ring has a pair of concentric main sealing lips and an additional secondary peripheral sealing lip disposed radially outward from said pair of concentric main sealing lips, and
- said outward facing surface of said additional secondary peripheral sealing lip has two peripheral reinforcing ribs.
4 more elements
A safety device comprising:
- a vacuum anchor having a sealing member to contact a surface;
- a support portion attached to said sealing member, said support portion having a boss adapted to interchangeably receive additional equipment, wherein said support portion comprises a radially extending arm rotatably mounted on said boss;
- a vacuum assembly being operable to produce a vacuum below said sealing member such that said safety device is held with respect to the surface by suction;
- a removable retaining plate, wherein said radially extending arm has a collar portion disposed around said boss, said collar portion being retained by said removable retaining plate;
- and
- wherein said sealing member comprises a sealing ring having a pair of concentric main sealing lips and an additional secondary peripheral sealing lip disposed radially outward from said pair of concentric main sealing lips, said additional secondary peripheral sealing lip having an outward facing surface having at least one peripheral reinforcing rib,
- said support portion has a boss adapted interchangeably receive additional equipment,
- said boss has a central blind bore extending axially therein to allow insertion of a mating part of the additional equipment, said central blind bore being independent of said vacuum assembly.
5 more elements
Dependencies are inferred from the claim text.