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:
Jun. 27, 1995
Filed:
Feb. 23, 1993
Wilfried Mertens, Lunen, DE;
Abstract
A drive station for a mineral mining installation employs a plough box containing a chain wheel around which a drive chain for a mineral winning machine, such as a plough, is entrained. The chain wheel is supported on a shaft rotatably supported by bearings in a casing or housing fitted to the plough box. An access opening in the plough box enables the chain wheel to be fitted onto or removed from the shaft and a collar of the casing engages on a fitting ring inside the opening which locates the plough box and the casing or housing. The ring has a radial projection which extends into a pocket adjoining the access opening and a pair of pins which employ strain gauges engage on the ring projection to provide electrical signals indicating the tension in the upper and lower runs of the chain.