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:
Oct. 18, 2016
Filed:
Sep. 21, 2010
Applicant:
Ian Hill, Newry, GB;
Inventor:
Ian Hill, Newry, GB;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E02F 3/36 (2006.01); F16K 17/36 (2006.01); F16K 31/22 (2006.01);
U.S. Cl.
CPC ...
E02F 3/3618 (2013.01); E02F 3/365 (2013.01); E02F 3/3663 (2013.01); F16K 17/366 (2013.01); F16K 31/22 (2013.01);
Abstract
A coupler for coupling an attachment to an excavator having a latching member for retaining a rear pin of the attachment and a blocking member for retaining the front pin of the attachment. A hydraulic actuator and spring are provided for holding the latching and blocking members in their closed states. In the event of a failure of the actuator, the spring, the latching member and the blocking member together hold the front and rear pins in their respective recesses to allow continued operation of the coupler, while allowing the pins to move with respect to the coupler to create a rattling movement that can indicate to the operator that a failure has occurred.