The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 09, 1999
Filed:
Aug. 21, 1997
Manfred Leischner, Kunzelsau, DE;
Bernd Limbacher, Schwabisch Hall, DE;
Dieter Pilz, Neuenstein, DE;
R. Stahl Schaltgerate GmbH, , DE;
Abstract
In a plastic housing of the 'Flameproof Enclosure' ignition protection type, one part of the housing is provided at the parting plane with a rib (31) and the other housing part is provided with a groove complementary thereto. The cross-sectional dimensions of the groove are larger than the cross-sectional dimensions of the rib (31). The gap-like space obtained thereby is filled with a coating which adheres integrally either to the rib (31) or to the walls (14, 15) of the groove (13). This gives rise, between the coating and the other part to which it does not adhere integrally, to a gap which meets the requirement placed on an 'ex-gap' of a flameproof housing.