Famous Patents
The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 6789692 | Container latch valve A container is provided having corresponding shells that mate together about a joint to create an enclosed airtight container. A valve seat is formed on the exterior of a shell adjacent the joint. The valve seat has an opening in communication with the container int... | 09/14/2004 |
| 6247491 | Childproof cover for compressed gas valves A childproof cover for use with a compressed gas cylinder having a shut-off valve inhibits access to the valve. The childproof cover is especially intended for use with propane cylinders for barbecues. The cover includes a housing that surrounds the valve... | 06/19/2001 |
| 6209749 | Gas cylinder safety shield A lower portion of a shell is slidable along the length of the body of a gas cylinder, the upper portion of the shell is larger than the lower portion and includes a wall extending fixedly from the lower portion configured to laterally surround the valve,... | 04/03/2001 |
| 5845809 | Protective cover for a compressed gas bottle A cover for placement on a compressed gas bottle is dimensioned to closely conform to the shape and size of a top section of a compressed gas bottle with a control valve assembly installed thereon. The cover preferably includes a shell having first and se... | 12/08/1998 |
| 5638858 | Gas cylinder safety cover A new and improved gas cylinder safety cover for protecting the valve, gauge, and regulator assembly of pressurized cylinders, such as in oxyacetylene torch sets, from damage due to a fall or dropped object and additionally protecting nearby people from f... | 06/17/1997 |
| 5544782 | Precision investment casting pressure vessel A pressure vessel for reducing air entrapment bubbles inherent in lost pattern type casting mould compounds and for increasing the density of the mould material, which in turn has proven to provide a smoother finished surface to the cast material. The pre... | 08/13/1996 |
| 4678003 | Safety cap for valve on high-pressure cylinder A safety cap for protecting against damage and tampering the shut-off valve of a high-pressure gas cylinder. The safety cap has a female threaded base bracket which is engaged with the male-threaded neck ring of the gas cylinder. Hinges carried by the bas... | 07/07/1987 |
| 4635676 | Protective propane tank control housing assembly A protective propane tank valve housing assembly for motor vehicle propane fuel tanks, has an elongated propane fuel tank with a set of controls disposed on the tank and spaced apart in a direction lengthwise thereon. A casing has side and end panels, whi... | 01/13/1987 |
| 4352370 | Pressure vessel valve housing One half of the valve housing is mounted on a strap which is tightened around a pressure vessel by a clamp screw. The other half of the housing is pivoted to the first so that it can be swung open to expose the valve. The other half can be locked to the s... | 10/05/1982 |
| 4301828 | Protective cover device A protective cover device for use in maintaining the inlet and/or outlet valves mounted in a wall of a liquid storage tank in a contaminant-free state during periods of both use and non-use and wherein the tank valve projects outwardly from a wall on the ... | 11/24/1981 |
| 4162740 | Valve cover A valve cover for an upstanding pipe leading to a buried valve. The valve cover has a clamping portion and a lid portion. The clamping portion includes a C-shaped member with back portions that abut each other when the C-shaped member is secured about the... | 07/31/1979 |
| 4078691 | Safety cover for gas outlet A safety cover for a gas outlet comprising a mounting plate for securement to a gas outlet pipe and a cover hinged to the plate whereby the cover may be positioned over the outlet and pivotally moved out of the way to permit access to the gas outlet. Typi... | 03/14/1978 |
| 3963144 | Transport container for dangerous liquids In a transport container for dangerous liquids, a protective shell is provided for the charging and emptying fittings mounted on the container. The shell consists of an upwardly opening shell structure mounted on the container and having a central portion... | 06/15/1976 |
