Back to results
US 3,995,653 AGranted
Inflation device
OwnerGlenn H. Mackal, George E. Lardner +1inventors
InventorsGlenn H. Mackal, George E. Lardner, Joseph Maz
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
OwnerGlenn H. Mackal, George E. Lardner +1inventors
InventorsGlenn H. Mackal, George E. Lardner, Joseph Maz
Estimating the term…
Device for inflating and deflating an inflatable article. The device has a body affixed to a wall of the inflatable article at a hole therethrough, the device having a tubular insert or nipple sealed to the body and a closure element or plug functioning as a stopper for the nipple, the plug being completely removable from the nipple to deflate the article. The plug has threaded engagement with the nipple, and functions as an inflating check valve when the valve is opened by partially unscrewing the plug from the nipple. The check valve is of novel construction, incorporating an annular seat formed integral with the body of the inflation device, a valve element in the form of a diaphragm on the plug cooperating with such annular seat, and a novel means for manually locally unseating the valve element from the annular valve seat when the plug is partially unscrewed from the nipple. The inflation device also incorporates a novel tether for the rotatable plug, the tether permitting free rotation of the plug with respect to the nipple, and the complete removal of the plug from the nipple while retaining it tethered, as during the deflation of the inflatable article.
An inflation device for an inflatable article, said device comprising a body having an annular flange adapted to be sealed to a wall of an inflatable article at an opening therethrough, a threaded tubular nipple disposed on the body, the nipple having a radially inwardly extending transverse annular flange thereon forming a transverse annular seat within the nipple, a tubular closure element applied to the outer free end of the nipple and having threaded engagement with the nipple, the closure element having a perforated partition extending across its axially inner end, and a flexible resilient imperforate diaphragm overlying the axially inner surface of the partition and centrally attached thereto, the annular outer edge of the diaphragm sealingly engaging the annular seat when the closure element is advanced into its axially inner closed position on the nipple.
Dependencies are inferred from the claim text.