| 摘要 |
A hold-open device comprising a small block that can easily be inserted into a pump handle, thereby holding the handle in the open position. A center hole provides for easy removal of the device when pumping is complete. Removal may be facilitated by simply placing one finger into the hole and sliding the device free of the pump handle. A finger-like protrusion at one corner of the block prevents the device from slipping out of the pump handle during operation.
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