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US 5,400,458 AGranted
Brush segment for industrial brushes
AssigneeMinnesota Mining and Manufacturing Company
InventorThomas W. Rambosek
Life of this patent
Estimating the term…
Abstract
A brush segment for an industrial brush is described. The brush segment includes a polymeric base portion, a plurality of bristles individually anchored to the polymeric base portion and projecting outwardly therefrom and means for securing the brush segment to the hub of a rotary brush. The polymeric base portion preferably comprises a thermoset urethane material. The root member may comprise an extension of material independent of the polymeric base portion which is non-mechanically secured to the polymeric base portion.
Claims7
A brush segment for an industrial brush;
- said brush segment comprising:
- (a) a polymeric base portion;
- (b) a root member having a neck portion embedded in said polymeric base portion and being non-mechanically bonded thereto, said root member comprises a material having the following properties:
- (i) hardness (Shore A)--at least 94;
- (ii) hardness (Shore D)--at least 50;
- (iii) % elongation at break--at least 300%;
- (iv) tensile stress at break, at least 5200 psi;
- and,
- (c) a plurality of bristles each having first and second ends, the first ends individually embedded in said polymeric base portion such that each of said second ends project outwardly therefrom in a direction generally opposite to said root member;
- at least some of said bristles being positioned over said root member neck portion.
7 more elements
A brush segment for a brush;
- said brush segment comprising:
- (a) a polymeric base portion comprising a thermoset resin;
- said polymeric base portion having the following properties:
- (i) hardness (Shore A) at least 90;
- (ii) hardness (Shore D) at least 50;
- (iii) tensile stress at break at least 3900 psi;
- and,
- (iv) 100% elongation at a stress of at least 1100 psi;
- (b) a plurality of bristles each having first and second ends, the first ends individually anchored in said polymeric base portion such that each of said second ends projects outwardly therefrom;
- and,
- (c) a single root member means for securing said brush segment to a hub, each of said bristles positioned substantially over said single root member.
8 more elements
Dependencies are inferred from the claim text.