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:
Feb. 28, 1989
Filed:
Feb. 29, 1988
Kennedy M O'Brien, Great Barr, GB;
Keith E Dunton, Rugely, GB;
Peter E Newley, Leigh Woods, GB;
Michael H Purser, Plymouth, GB;
Jonathan M Isherwood, Leamington Spa, GB;
Robert W Tansley, Stratford-upon-Avon, GB;
Driver Southall Limited, , GB;
Abstract
A weighing hopper (20) comprising: a body portion for containing articles; a port in the body portion; a door (21) pivotally connected to the body portion for rotation about a first axis (A) between a first position in which the port is closed by the door (21) to retain articles in the body portion and a second position in which articles contained in the hopper (20) can be discharged through the port; and a mechanism (23) for moving the door (21) between its first and second positions comprising a first member (58) rigidly connected to the door (21); a second member (60) pivotally connected to the first member (58) for rotation about a second axis (E) parallel to and spaced from the first axis (A); and a third member (62) pivotally connected to the second member (60) for rotation about a third axis (B) parallel to and spaced from the second axis (E), and pivotally connected to the body portion for rotation about a fourth axis (C) parallel to and fixedly spaced from the first axis (A) so that rotation of the third member (62) about the fourth axis causes rotation of the door (21) about the first axis (A); and a first stop member (D) which defines the first closed position of the door (21) as a position just after the third axis (B) has moved through a straight line joining the second (E) and fourth (C) axes.