← Back to Patent Explorer
US3136274A Expired / Lapsed US ⏱️ 0.0 years remaining

Lawn perforator

Assignee: KRIKEN MACHINE Manufacturing CO
•
Filing: 1960-09-12
•
Granted: 1964-06-09
•
Expires: 1980-09-12
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Ward M Townsend

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 06:09
CPC Classifications
A; A01; A01B; A01B45/00; A01B45/02; A01B45/023

Claims Analysis

Total Claims: 1
Claim 1
Independent Claim 216 words
A LAWN PERFORATOR, SAID PERFORATOR COMPRISING A COMBINATION OF A SUPPORTING FRAME AND A MOVABLE FRAME, SAID SUPPORTING FRAME HAVING A SUPERSTRUCTURE, GUIDE MEANS IN THE SUPERSTRUCTURE OF THE MOVABLE FRAME FOR GUIDING THE MOVABLE FRAME TO A SUBSTANTIALLY UP AND DOWN MOVEMENT BUT SAID GUIDE MEANS ALLOWING SUFFICIENT LATERAL MOVEMENT OF THE MOVABLE FRAME TO VARY THE POSITION OF THE MOVABLE FRAME WITH RESPECT TO THE SUPPORTING EARTH FOR THE LAWN PERFORATOR, A YIELDABLE MEANS CONNECTING THE SUPPORTING FRAME AND THE MOVABLE FRAME TO URGE THE MOVABLE FRAME IN A DOWNWARD DIRECTION, A CAM AND CAM FOLLOWER ASSEMBLY MOUNTED ON THE SUPPORTING FRAME AND THE MOVABLE FRAME FOR RAISING THE MOVABLE, A BEARING MEANS ON SAID CAM, SAID BEARING MEANS BEING OFF CENTER WITH RESPECT TO THE CENTER OF THE CAM, SAID BEARING MEANS CONTACTING SAID MOVABLE FRAME FOR MOVING SAID MOVABLE FRAME WITH RESPECT TO THE SUPPORTING FRAME, MEANS TO ROTATE THE CAM, A TINE ATTACHED TO THE LOWER PART OF THE MOVABLE FRAME FOR MOVEMENT INTO THE LAWN, SAID TINE HAVING A PASSAGEWAY THEREIN FOR DIRECTING A LIQUID INTO THE LAWN, A LIQUID RESERVOIR IN THE LAWN PERFORATOR, A CONNECTING MEANS INTERCONNECTING THE RESERVOIR AND THE PASSAGEWAY IN THE TINE, AND PUMP MEANS FOR PUMPING THE LIQUID THROUGH THE PASSAGEWAY IN THE TINE.

References Cited (Backward Citations)

US13505A Cited
US1732972A Cited
US2255040A Cited
US2223559A Cited
US2345425A Cited
US2302944A Cited
DE826518C Cited
US2800066A Cited
US2838986A Cited
US2866422A Cited
US2930334A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1967-06-09 1967-12-09 1968-06-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1971-06-09 1971-12-09 1972-06-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1975-06-09 1975-12-09 1976-06-09 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag