Abstract

A control system for extending and retracting a ram of a hydraulic coupler for coupling an attachment to an arm of an excavator or back hoe, said control system being adapted to provide an audible and/or visual alert to an operator to indicate a leak of fluid or loss of fluid pressure from said ram and/or …

Legal parties

Party
Inventors (applicants): Nick Elwell, Ian Hill
Assignees (initial): Hill Engineering Limited (Newry, County Down, GB)
Agents: Gardner, Linn, Burkhart & Flory, LLP (attorney)

The application was examined by Michael Quandt, Edward Look (USPTO dept. 3745)

Claims

  • 1. A control system for extending and retracting a ram of a hydraulic coupler for coupling …
  • 2. A control system as claimed in claim 1 , wherein the first and second …
  • 3. A control system as claimed in claim 2 , wherein the control box is mounted …

International priority data

GB: 1010266.3 / Jun. 18, 2010 (national)
GB: 0918114.0 / Oct. 16, 2009 (national)

Cited documents

Patents

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Drawings

Brief Description of the Drawings

An embodiment of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which: FIG. 1 shows a hydraulic circuit for a coupler …

Description

Field of the Invention

This invention relates to a control system for a hydraulic coupler for safely and quickly connecting and disconnecting attachments, such as buckets, to the arm of an excavator or backhoe …

Detailed Description of the Drawings

FIG. 1 shows a hydraulic circuit for a hydraulic coupler control system in accordance with an embodiment of the present invention. High pressure oil is supplied to the coupler operating …

More details about Control System for a Hydraulic Coupler

Miscellaneous patent data

The assignee location is Newry, County Down (GB); its organization is Hill Engineering Limited, particularly claims a control system for extending and retracting a ram of a hydraulic coupler…, similar documents are classified under Pyrotechnical actuators, special provision for automatic return, Servomotor systems with programme control derived from a store or timing device, Control devices therefor, Both inlet and exhaust controlled by motive fluid pressure in supply line or chamber, Spring-type feedback bias means, the telescopic type, Biased cut off with adjustable trip, Correlated throttle valve and distributor, electrical control means, Cooperating valve ports in cylinder and relatively movable central member, the exemplary patent drawings are Electrical schematic for the control, hydraulic circuit for a coupler, Control System for a Hydraulic, embodiment of a hydraulic circuit, the inventor's name is Nick Elwell, the term of the patent grant was extended by 671 days, the application publication date is Oct. 15, 2010, the protection scope is defined by 6 claims, numbered 12/905,164 (application), the examination was conducted by Edward Look, the main examiner, Michael Quandt, the assistant (3745 USPTO department), the grant number is 08863640, the applicant's last name is Hill, and his first name is Ian, developed by Nick Elwell et al., the known agent's company name - Gardner, Linn, Burkhart & Flory, LLP, the patent was granted on Oct. 21, 2014, assigned to a foreign company or corporation, the primary classification With Signal, Indicator or Inspection Means has been designated to the document, the invention description is illustrated by 3 drawings, the invention details are shown in 3 figures, the claim number 1 is selected as exemplary, the invention is titled Control System for a Hydraulic Coupler.

Invention classification information

The invention is classified under With Signal, Indicator or Inspection Means, Parallel arrangements of independent servomotor systems, Component parts, Hydraulic or pneumatic drives, Testing fluid-pressure actuator systems or apparatus, so far as not provided for elsewhere. The designated search classifications include With Signal, Indicator or Inspection Means, Having a signal, indicator or inspection means.

Patent details
Publication number 08863640
Publication date Oct. 21, 2014
Kind code B2
Application number 12/905,164
Application date Oct. 15, 2010
Application type U
Application series code 12
Extension term 671
National classification 91/1
Total number of claims 6
Exemplary claims 1
Number of drawings 3
Number of figures 3
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