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:
Aug. 12, 1986
Filed:
Dec. 21, 1983
Josef Keuschnigg, Ehrenhausen, AT;
Arnulf Kissich, Zeltweg, AT;
Voest-Alpine Aktiengesellschaft, Vienna, AT;
Abstract
In a drive arrangement for the loading arms (5) of a loading ramp for a heading machine or longwall shearing machine, each loading arm (5) is rotatably supported in off-center position on a rotary disc (7) and extended beyond its axis of rotation (6) by guide arm (10) arranged so as to swivel around a bearing point on one end of a steering lever (11). The heading machine or longwall shearing machine has--for broadening its loading ramp--laterally outwardly swivellable parts (2) having arranged thereon, in a manner preventing angular movement, an arm (14) extending beyond the pivotal axis (4) of the extendible part (2). For automatic adaptation of the removal width of the loading arms (5) to the selected working width of the loading ramp, the other end of the steering lever (11) is hinged to the free end of the arm (14) connected with the outwardly swivellable part (2).