US3350866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic lawn tongs
Assignee: Individual
•
Filing: 1965-01-18
•
Granted: 1967-11-07
•
Expires: 1985-01-18
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:59
CPC Classifications
A; A01; A01D; A01D7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
341 words
A LIGHT AND INEXPENSIVE AUTOMATIC LAWN TONG COMPRISING AN UPPER RAKE-HEAD PROVIDED WITH A SOCKET AT ONE END THEREOF, AN UPPER GROUP OF ABOUT ONE DOZEN RESILIENT TINES EXTENDING FROM THE OTHER END OF SAID UPPER RAKE-HEAD, SAID UPPER GROUP OF TINES HAVING A SLIGHT CURVATURE AT THEIR FREE ENDS DIRECTED DOWNWARD, A LONG STRAIGHT HANDLE ATTACHED TO THE SOCKET OF SAID UPPER RAKE-HEAD; A LOWER RAKE-HEAD NORMALLY ALIGNED AND SUBSTANTIALLY PARALLEL WITH THE UPPER RAKE-HEAD AND PROVIDED WITH A SOCKET AT ONE END THEREOF, A LOWER GROUP OF ABOUT ONE DOZEN RESILIENT TINES EXTENDING FROM THE OTHER END OF SAID LOWER RAKE-HEAD, SAID LOWER GROUP OF TINES ALSO HAVING A CURVATURE AT THEIR FREE ENDS BUT DIRECTED UPWARD AND WHICH INTERMESH WITH THE UPPER GROUP OF TINES, THE CURVATURE OF SAID LOWER GROUP OF TINES BEING APPRECIABLY GREATER THAN THE CURVATURE OF SAID UPPER GROUP OF TINES SO THAT THE EFFECTIVE LENGTH OF THE LOWER GROUP OF TINES IS APPRECIABLY LESS THAN THAT OF THE UPPER GROUP OF TINES, A SHORT STRAIGHT SHAFT ATTACHED TO THE SOCKET OF SAID LOWER RAKE-HEAD; PIVOT MEANS JOINING SAID HANDLE AND SAID SHAFT, SAID PIVOT BEING PURPOSELY LOCATED AT A DISTANCE FROM THE RAKE-HEADS TO PROVIDE NOT ONLY FOR THE NORMAL ALIGNED PARALLEL PROXIMITY OF TE TWO RAKE-HEADS PREVIOUSLY MENTIONED, BUT ALSO TO PROVIDE FOR MAINTAINING A PROPER RELATIONSHIP BETWEEN THE TWO RAKE-HEADS AS THEY AUTOMATICALLY SEPARATE WHILE RAKING, AND IN ADDITION TO PROVIDE FOR THE USER''S CONVENIENCE IN THE MANUAL SEPARATION OF THE TWO RAKE-HEADS; A RESTORING SPRING MEANS INTERCONNECTING THE HANDLE AND THE SHAFT, SAID SPRING BEING OF THE WRAP-AROUND TYPE MADE FROM SPRING TEMPERED SHEET METAL, RIGIDLY ATTACHED AT ITS TWO ENDS TO THE HANDLE, FITTING CLOSELY AROUND THE SHAFT, AND LOCATED NEAR THE PIVOT; AND A ALIGNMENT MEANS OF THE ENCOMPASSING TYPE MADE FROM SHEET METAL AND RIGIDLY ATTACHED AT ITS TWO ENDS TO THE SHAFT NEAR THE RAKE-HEAD, AND PROVIDING ON ITS LEFT AND RIGHT SIDES A GUIDE FOR THE HANDLE AND CLOSED AT ITS TOP TO LIMIT MOVEMENT.
Claim 2
Dependent Claim
341 words
A LIGHT AND INEXPENSIVE AUTOMATIC LAWN TONG COMPRISING AN UPPER RAKE-HEAD PROVIDED WITH A SOCKET AT ONE END THEREOF, AN UPPER GROUP OF ABOUT ONE DOZEN RESILIENT TINES EXTENDING FROM THE OTHER END OF SAID UPPER RAKE-HEAD, SAID UPPER GROUP OF TINES HAVING A SLIGHT CURVATURE AT THEIR FREE ENDS DIRECTED DOWNWARD, A LONG STRAIGHT HANDLE ATTACHED TO THE SOCKET OF SAID UPPER RAKE-HEAD; A LOWER RAKE-HEAD NORMALLY ALIGNED AND SUBSTANTIALLY PARALLEL WITH THE UPPER RAKE-HEAD AND PROVIDED WITH A SOCKET AT ONE END THEREOF, A LOWER GROUP OF ABOUT ONE DOZEN RESILIENT TINES EXTENDING FROM THE OTHER END OF SAID LOWER RAKE-HEAD, SAID LOWER GROUP OF TINES ALSO HAVING A CURVATURE AT THEIR FREE ENDS BUT DIRECTED UPWARD AND WHICH INTERMESH WITH THE UPPER GROUP OF TINES, THE CURVATURE OF SAID LOWER GROUP OF TINES BEING APPRECIABLY GREATER THAN THE CURVATURE OF SAID UPPER GROUP OF TINES SO THAT THE EFFECTIVE LENGTH OF THE LOWER GROUP OF TINES IS APPRECIABLY LESS THAN THAT OF THE UPPER GROUP OF TINES, A SHORT STRAIGHT SHAFT ATTACHED TO THE SOCKET OF SAID LOWER RAKE-HEAD; PIVOT MEANS JOINING SAID HANDLE AND SAID SHAFT, SAID PIVOT BEING PURPOSELY LOCATED AT A DISTANCE FROM THE RAKE-HEADS TO PROVIDE NOT ONLY FOR THE NORMAL ALIGNED PARALLEL PROXIMITY OF TE TWO RAKE-HEADS PREVIOUSLY MENTIONED, BUT ALSO TO PROVIDE FOR MAINTAINING A PROPER RELATIONSHIP BETWEEN THE TWO RAKE-HEADS AS THEY AUTOMATICALLY SEPARATE WHILE RAKING, AND IN ADDITION TO PROVIDE FOR THE USER''S CONVENIENCE IN THE MANUAL SEPARATION OF THE TWO RAKE-HEADS; A RESTORING SPRING MEANS INTERCONNECTING THE HANDLE AND THE SHAFT, SAID SPRING BEING OF THE WRAP-AROUND TYPE MADE FROM SPRING TEMPERED SHEET METAL, RIGIDLY ATTACHED AT ITS TWO ENDS TO THE HANDLE, FITTING CLOSELY AROUND THE SHAFT, AND LOCATED NEAR THE PIVOT; AND A ALIGNMENT MEANS OF THE ENCOMPASSING TYPE MADE FROM SHEET METAL AND RIGIDLY ATTACHED AT ITS TWO ENDS TO THE SHAFT NEAR THE RAKE-HEAD, AND PROVIDING ON ITS LEFT AND RIGHT SIDES A GUIDE FOR THE HANDLE AND CLOSED AT ITS TOP TO LIMIT MOVEMENT.
References Cited (Backward Citations)
US3164945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |