CA975247A - Hydraulic circuitry for an excavator - Google Patents

Hydraulic circuitry for an excavator

Info

Publication number
CA975247A
CA975247A CA218,521A CA218521A CA975247A CA 975247 A CA975247 A CA 975247A CA 218521 A CA218521 A CA 218521A CA 975247 A CA975247 A CA 975247A
Authority
CA
Canada
Prior art keywords
excavator
hydraulic circuitry
circuitry
hydraulic
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
CA218,521A
Inventor
Donald L. Hopkins
John W. Bridwell
Kenneth R. Lohbauer
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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor 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
Priority claimed from CA158,237A external-priority patent/CA982089A/en
Application filed by Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Priority to CA218,521A priority Critical patent/CA975247A/en
Application granted granted Critical
Publication of CA975247A publication Critical patent/CA975247A/en
Expired legal-status Critical Current

Links

CA218,521A 1971-12-13 1975-01-23 Hydraulic circuitry for an excavator Expired CA975247A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA218,521A CA975247A (en) 1971-12-13 1975-01-23 Hydraulic circuitry for an excavator

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US20702771A 1971-12-13 1971-12-13
CA158,237A CA982089A (en) 1971-12-13 1972-12-06 Hydraulic circuitry for an excavator
CA218,521A CA975247A (en) 1971-12-13 1975-01-23 Hydraulic circuitry for an excavator

Publications (1)

Publication Number Publication Date
CA975247A true CA975247A (en) 1975-09-30

Family

ID=27162452

Family Applications (1)

Application Number Title Priority Date Filing Date
CA218,521A Expired CA975247A (en) 1971-12-13 1975-01-23 Hydraulic circuitry for an excavator

Country Status (1)

Country Link
CA (1) CA975247A (en)

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