Patent US3295270A successfully refreshed from Google Patents.
← Back to Patent Explorer
US3295270A Expired / Lapsed US ⏱️ 0.0 years remaining

Folded oil well mast structure

Assignee: Lee C Moore Corp
•
Filing: 1964-11-05
•
Granted: 1967-01-03
•
Expires: 1984-11-05
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Homer J Woolslayer
  • 👤 Jenkins Cecil

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 04:12
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/02; E21B7/023

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 194 words
A FOLDED MAST STRUCTURE COMPRISING A BASE HAVING FRONT AND REAR ENDS, A RECLINING LOWER MAST SECTION HAVING A FOOT PIVOTALLY CONNECTED TO SAID BASE, SAID SECTION EXTENDING FORWARD OVER THE BASE FROM SAID FOOT, AN UPPER MAST SECTION RECLINING ABOVE THE LOWER SECTION AND HAVING A HEAD AT THE BACK OF THE BASE, MEANS HINGING THE FRONT END OF THE LOWER SIDE OF THE UPPER SECTION TO THE FRONT END OF THE UPPER SIDE OF THE LOWER SECTION, THE UPPER SIDE OF THE UPPER SECTION EXTENDING FORWARD BEYOND SAID HINGING MEANS TO OVERHANG THE UNDERLYING LOWER SECTION, RIGID, UNITARY LEGS INCLINED LENGTHWISE OF THE BASE AND HAVING UPPER ENDS PIVOTED TO SAID OVERHANG, SHOES PIVOTALLY CONNECTING THE LOWER ENDS OF THE LEGS TO SAID BASE BETWEEN THE LOCATIONS OF THE ENDS OF THE RECLINING LOWER SETION, AND MEANS FOR SWINGING ONE OF THE MAST SECTIONS UPWARDLY, THE LOWER ENDS OF THE LEGS BEING HELD DOWN BY SAID SHOES IN A POSITION TO CAUSE THE LEGS TO SWING THE OTHER MAST SECTION UPWARDLY RELATIVE TO SAID ONE SECTION UNTIL BOTH SECTIONS ARE ERECT WITH THE UPPER SECTION RESTING ON TOP OF THE LOWER SECTION.
Claim 2
Dependent Claim 194 words
A FOLDED MAST STRUCTURE COMPRISING A BASE HAVING FRONT AND REAR ENDS, A RECLINING LOWER MAST SECTION HAVING A FOOT PIVOTALLY CONNECTED TO SAID BASE, SAID SECTION EXTENDING FORWARD OVER THE BASE FROM SAID FOOT, AN UPPER MAST SECTION RECLINING ABOVE THE LOWER SECTION AND HAVING A HEAD AT THE BACK OF THE BASE, MEANS HINGING THE FRONT END OF THE LOWER SIDE OF THE UPPER SECTION TO THE FRONT END OF THE UPPER SIDE OF THE LOWER SECTION, THE UPPER SIDE OF THE UPPER SECTION EXTENDING FORWARD BEYOND SAID HINGING MEANS TO OVERHANG THE UNDERLYING LOWER SECTION, RIGID, UNITARY LEGS INCLINED LENGTHWISE OF THE BASE AND HAVING UPPER ENDS PIVOTED TO SAID OVERHANG, SHOES PIVOTALLY CONNECTING THE LOWER ENDS OF THE LEGS TO SAID BASE BETWEEN THE LOCATIONS OF THE ENDS OF THE RECLINING LOWER SETION, AND MEANS FOR SWINGING ONE OF THE MAST SECTIONS UPWARDLY, THE LOWER ENDS OF THE LEGS BEING HELD DOWN BY SAID SHOES IN A POSITION TO CAUSE THE LEGS TO SWING THE OTHER MAST SECTION UPWARDLY RELATIVE TO SAID ONE SECTION UNTIL BOTH SECTIONS ARE ERECT WITH THE UPPER SECTION RESTING ON TOP OF THE LOWER SECTION.

References Cited (Backward Citations)

CH65418A Cited
US2573528A Cited
US2683584A Cited
GB738198A Cited
DE942619C Cited
US3033527A Cited
US3181658A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1970-01-02 1970-07-04 1971-01-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1974-01-02 1974-07-04 1975-01-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1978-01-02 1978-07-04 1979-01-03 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag