Abstract: An injection moulding process for making a moulded article particularly a toothbrush consisting partly of a hard first plastics material by providing a first injection mould introducing a component into the cavity adjacent to the surface; injecting a plastics material into the cavity so that the plastic material is fixed to the component and the component forms part of the outer surface of the article. In a second moulding operation another material such as an elastomer may be injected. A toothbrush product made by this process is also described.
Type:
Grant
Filed:
June 12, 2001
Date of Patent:
November 20, 2007
Assignee:
GlaxoSmithKline Consumer Healthcare GmbH & Co KG
Abstract: An electrically driven toothbrush having a replaceable head section with a plug part which is engageable with a socket in its handle to connect its driveable head to its motor in the handle. The head section has a resiliently deformable end surface, and there is an engaging concavity and convexity in the respective meeting end surfaces of the plug part and the socket. The concavity and convexity engage to facilitate locking together of the head and handle. A separate replaceable head section for such a toothbrush is also provided.
Type:
Grant
Filed:
April 24, 2001
Date of Patent:
May 29, 2007
Assignee:
GlaxoSmithKline Consumer Healthcare GmbH & Co KG
Abstract: A composition for reducing dentinal hypersensitivity and remineralizing exposed dentinal surface and open dentinal tubules, comprising a non-aqueous carrier and a desensitizing amount of a desensitizing/remineralizing agent which consists essentially of a water soluble calcium salt and an incompatible ingredient which would otherwise react with the calcium salt. Upon contact with saliva when applied to an oral cavity, the desensitizing/remineralizing is then formed in situ by the reaction between the calcium salt and the incompatible ingredient, thereby remineralizing exposed dentinal surface and open dentinal tubules.
Type:
Grant
Filed:
October 10, 2001
Date of Patent:
February 27, 2007
Assignee:
Block Drug Company, Inc.
Inventors:
Jin Xu, Stephen W. Mruphy, Bala Nayar, Michael E. Trama