US Patent: 6,591,719
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Adjustable Pliers Wrench
Self-Locking, Adjustable Pliers Wrench
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Patentees:
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| Daniel L. Poole (exact or similar names) - Phoenix, AZ |
| Robert N. Poole (exact or similar names) - Phoenix, AZ |
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Patent Dates:
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| Applied: |
Jul. 19, 2001 |
| Granted: |
Jul. 15, 2003 |
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Patent Pictures:
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Daniel L. and Robert N. Poole patent July 15, 2003 |
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Stan Schulz
Lock Jaw Pliers web site (Aug. 2009)
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Description: |
| Release lever on the swinging handle; gripping-tension adjusting screw in the intermediate link; base of intermediate link in the solid handle slides on a rod, against a compression spring. Arrangement intended to facilitate one-handed operation with no need to adjust for different size objects. The specifications describe alternate arrangements for some of the features.
In 2020, the patent number along with 6,776,072 appears on a HART brand self-adjusting locking pliers "Made in Taiwan," and the "LOCKJAW" web site is gone.
In addition to: [Alfred Schulz and Lucile Schulz, Antique and unusual wrenches : Malcolm, NE, 1992], the specifications cite an extensive list of patents as relevant prior art, beginning with 936,980 and including:
HOSTETTER - 2,751,801, 3,116,656, RE26,280
MANSPEAKER - 2,5322,285
MEAD - 2,523,385, 2,543,922, 2,669,145
ROMMEL, et al. - 3,195,382 |
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