Miller UK Limited

Other

Ronald Keith Miller

Gary Miller

Gary Pendleton

Howard Reay

Paul Grant

Doreen Jacqueline Miller

Paul Maguire

Michael Fenwick

Couplers for attaching an accessory to an excavator arm of an excavator. Couplers having a first side for attaching the coupler to the excavator arm and a second side onto which the accessory will be coupled. The coupler includes a latch for selectively securing and releasing an attachment pin of the accessory in a jaw, groove, hook or slot in the second side of the coupler. The coupler is fully controllable from within the cab of the excavator and it allows improved security in the securement of the accessory to the coupler, i.e. preventing accidental decouplings, but while still allowing intentional decoupling operations to be carried out without undue burden.

Coupler

The coupler has a pair of spaced side frames () in each of which a first hook like aperture () is provided for engagement with a first pivot pin provided on an excavator bucket and wherein a locking pin () is moveable from and into a locking position in which it prevents the latching hook () from disengage from a second pivot pin (), () or () on the bucket there being a plurality of locking positions for the pin to accommodate different buckets. Preferably, a plurality of spaced apertures (), (), () are formed on each of the side frames (), those in one frame being transversely aligned with those in the other frames, and preferably also a plurality of spaced apertures () and/or latching surfaces are formed on the latching hook or on an extension thereof, through or against which the locking pin () can be passed or can bear to prevent relative movement between the hook () and side frames. Preferably, the piston end cylinder device () for operating the latching hook has a much longer stroke than usual and the side frames () of the coupler are longer than those of known couplers, there being a downwardly opening recess () in the side frames which is much wider than usual to accommodate different pin spacings on the buckets of different manufacturers.

Universal coupler for excavator buckets

Bucket for excavator

A coupler ( ) for connecting a dipper arm ( ) of an excavator to a bucket ( ) without the need for the operator of the excavator to leave the cab of the excavator, the coupler ( ) having means for connecting it to the end of the dipper arm, and means, including a latching hook ( ) for connecting it to one of a plurality of different buckets ( ) and wherein locking means ( ) is provided to prevent inadvertent unlatching of the latching hook ( ), said locking means ( ) being operable from the cab. The locking means may be gravity operated and include resiliently deformable means ( ), thereon to prevent unlatching when the coupler ( ) is inverted. Alternatively, it may be spring ( ) operated in which case, further means ( ) is provided to move the locking means against the bias of the spring. Preferably, the hook ( ) has a special internal profile ( ) so that when it is supporting the weight of a bucket, it will tend to move to a latching position, not to an unlatching position.

Quick coupler for bucket excavators

Coupler for bucket excavators

Growing community of inventors

Newcastle upon Tyne, United Kingdom

Ronald Keith Miller