CA1122881A - Header height valve - Google Patents

Header height valve

Info

Publication number
CA1122881A
CA1122881A CA339,806A CA339806A CA1122881A CA 1122881 A CA1122881 A CA 1122881A CA 339806 A CA339806 A CA 339806A CA 1122881 A CA1122881 A CA 1122881A
Authority
CA
Canada
Prior art keywords
valve
flow
cavity
pump
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA339,806A
Other languages
English (en)
French (fr)
Inventor
Alan D. Jackson
Frank N. Alexander
Homer R. Graber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cessna Aircraft Co
Original Assignee
Cessna Aircraft Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cessna Aircraft Co filed Critical Cessna Aircraft Co
Application granted granted Critical
Publication of CA1122881A publication Critical patent/CA1122881A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/01—Locking-valves or other detent i.e. load-holding devices
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D41/00—Combines, i.e. harvesters or mowers combined with threshing devices
    • A01D41/12—Details of combines
    • A01D41/14—Mowing tables
    • A01D41/145—Header lifting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Fluid-Pressure Circuits (AREA)
CA339,806A 1979-03-12 1979-11-14 Header height valve Expired CA1122881A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/019,815 US4283996A (en) 1979-03-12 1979-03-12 Header height valve
US019,815 1979-03-12

Publications (1)

Publication Number Publication Date
CA1122881A true CA1122881A (en) 1982-05-04

Family

ID=21795178

Family Applications (1)

Application Number Title Priority Date Filing Date
CA339,806A Expired CA1122881A (en) 1979-03-12 1979-11-14 Header height valve

Country Status (5)

Country Link
US (1) US4283996A (enExample)
BR (1) BR7907811A (enExample)
CA (1) CA1122881A (enExample)
FR (1) FR2451484A1 (enExample)
GB (1) GB2045472B (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3733679A1 (de) * 1987-10-05 1989-04-13 Rexroth Mannesmann Gmbh Steuerschaltung fuer einen mit einer verstellpumpe betriebenen hydraulischen kraftheber
DE3733677A1 (de) * 1987-10-05 1989-04-13 Rexroth Mannesmann Gmbh Lastunabhaengige steuereinrichtung fuer hydraulische verbraucher
US5454223A (en) * 1993-05-28 1995-10-03 Dana Corporation Hydraulic load sensing system with poppet valve having an orifice therein
JP4276491B2 (ja) * 2003-08-04 2009-06-10 日立建機株式会社 方向切換弁ブロック
DE102005062350A1 (de) * 2005-12-23 2007-07-05 Abb Technology Ag Hydraulikventil
US10487474B2 (en) 2017-06-23 2019-11-26 Deere & Company System and method for hydraulic actuator lock valve

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3049101A (en) * 1961-04-03 1962-08-14 New York Air Brake Co Hydraulic mechanism
US3198088A (en) * 1963-08-13 1965-08-03 Caterpillar Tractor Co Fluid motor control system
US3272085A (en) * 1963-11-19 1966-09-13 Parker Hannifin Corp Fluid system and valve assembly therefor
US3410306A (en) * 1966-10-27 1968-11-12 Gen Signal Corp Control valve with lockout element
US3508847A (en) * 1968-09-11 1970-04-28 Cessna Aircraft Co Pump control system
JPS5226311B2 (enExample) * 1973-08-24 1977-07-13
US4040438A (en) * 1974-04-18 1977-08-09 Koehring Control valve with flow control means
NL7800061A (nl) * 1977-02-14 1978-08-16 Beermann Kg Martor Argentax Handbediende snijinrichting.

Also Published As

Publication number Publication date
GB2045472B (en) 1983-02-23
FR2451484A1 (fr) 1980-10-10
BR7907811A (pt) 1980-10-14
FR2451484B1 (enExample) 1984-04-27
GB2045472A (en) 1980-10-29
US4283996A (en) 1981-08-18

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Legal Events

Date Code Title Description
MKEX Expiry
MKEX Expiry

Effective date: 19990504