US Patent: 3,838,615
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| OIL FILTER WRENCH
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Patentees:
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| Frederick R. McFarland (exact or similar names) - Lancaster, PA |
| Walter L. Diffenderfer (exact or similar names) - Lancaster, PA |
| USPTO Classifications: |
| 81/64 |
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Patent Dates:
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| Applied: |
Dec. 10, 1973 |
| Granted: |
Oct. 01, 1974 |
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Patent Pictures:
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Patent 3,838,615 - edited drawing |
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Stan Schulz
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Description: |
| "SUMMARY OF THE INVENTION:
A principle object of the present invention is to provide an improved oil filter wrench for truck or other heavy duty use which permits a large torque to be applied to the filter can without crushing the can sidewall.
The foregoing object is achieved by providing an oil filter wrench which includes a saddle-like anchor of relatively large area which distributes the load to a correspondingly large area of the sidewall of the can when the wrench lever pulls the band tightly about the filter can."
The patent number appears on a K-D "band type" oil filter wrench sized for filters with external diameter just over 4." |
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