Bizarre Patents
Pet Toilet-Like Water Disk and Food Storage
One pet-friendly inventor patented "a device for watering pets, e.g., a dog or cat." The device, he helpfully noted, "has the general shape of a toilet."
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| Number | Title | Issue Date |
| 7441563 | Thermostatic expansion valve with check valve A valve is provided that comprises a valve body including an inlet, an outlet, and a check valve chamber having an opening through the side of the valve body. The valve has a cover secured within the side opening in the valve body. A first valve opening is disposed ... | 10/28/2008 |
| 7410608 | Methods for manufacturing a diaphragm for an air admittance valve In some embodiments, a process for manufacturing a diaphragm for an air admittance valve includes disposing a first center disk into a first cavity of a first mold, the first center disk includes a hollow stem. A material is provided into the first mold, through the... | 08/12/2008 |
| 7395835 | Air admittance valve In some embodiments, an air admittance valve includes a base, a screen plate and a diaphragm engageable with the screen plate. The diaphragm may include a first center disk having a stem and a membrane coupled to the first center disk. The membrane may have a contin... | 07/08/2008 |
| 7186282 | Motor-vehicle air cleaner A motor-vehicle air cleaner provided with a check valve mechanism on the lower cap of the air cleaner for drainage and ventilation, and a protection disposed on the outer edge; the check valve being closed as the engine runs to prevent from taking in water vapor and... | 03/06/2007 |
| 7059582 | Fuel cell supply having fuel compatible materials The present invention is directed to a fuel cell supply for a fuel cell having an outer casing, a liner member containing methanol, and a valve component comprising a valve body member and a slidable body member disposed inside the valve body member. The slidable bo... | 06/13/2006 |
| 6955181 | Valve body and seal assembly A valve seal assembly comprising a valve body having one or more peripheral integral seal retention grooves and one or more peripheral elastomeric seals, each seal being cast-in-place in an integral seal retention groove having adhesion-inhibiting surfaces and offse... | 10/18/2005 |
| 6782917 | Reciprocating cone anti-drainback apparatus An anti-drainback apparatus for a filter used in a vehicle transmission, allows fluid to keep the transmission pump primed when the engine is turned off. In one embodiment, the apparatus includes a seal disposed in a neck member of the filter at its outlet, and a bo... | 08/31/2004 |
| 5913330 | Pressure/vacuum relief valve assembly A non-sticking, field replaceable valve seat and pallet assembly for use in a pressure vacuum relief valve. The valve seat is adapted for positioning within a valve orifice inside the valve housing. The valve seat has three guide vanes spaced around and r... | 06/22/1999 |
| 5829952 | Check valve with a reversible valve ball and seat A reversible valve ball assembly for use in a down-hole pump oil field check valve. The reversible valve ball can be removed, inverted and reinserted into the check valve to provide a new valve ball sealing surface. The reversal of the valve ball is perfo... | 11/03/1998 |
| 5706854 | Venturi vent valve A Venturi vent valve is disclosed suitable for relieving pressure differentials in sewer systems and preventing the escape of odorous gases. The valve consists of a flared tube containing a conical valve so that the annulus forms a Venturi chamber. The co... | 01/13/1998 |
| 5657790 | Valves for pressurized containers A non-refillable valve for a pressurized container which includes a unidirectional stepped valve housing within which a freestanding blocking element is housed. The blocking element is preferably a reversible, symmetrical check that integrally includes st... | 08/19/1997 |
| 5431186 | Valve body design for use with pumps handling abrasive fluids An improved plastic valve body design and construction which has strength and durability similar to that of steel valve bodies but with significantly reduced manufacturing time and cost. The valve body comprises a unique and nonobvious combination of a pr... | 07/11/1995 |
| 5345965 | Valve body design for use with pumps handling abrasive fluids An improved plastic valve body design and construction which has strength and durability similar to that of steel valve bodies but with significantly reduced manufacturing time and cost. The valve body comprises a unique and nonobvious combination of a pr... | 09/13/1994 |
| 5297579 | Ball and seat-type check valve for downhole rod pump The plunger of the valve has a semi-spherical valve member of reduced diameter, so that it is inwardly spaced from the ribs of the cage. The plunger is centralized and guided by top and bottom stems attached to the ball and working loosely in apertured we... | 03/29/1994 |
| 5275204 | Valve element A valve element is disclosed comprised of a body section, upper guide, lower guide, sealing section and reinforcement section. The reinforcement section is made of materials having a hardness greater than the lower guide and sealing section. The reinforce... | 01/04/1994 |
| 5176162 | Predetermined separation fitting A predetermined separation fitting for a fluid conduit includes a body and walls in the body defining a predetermined separation point. A force applied to the body above a predetermined value will cause the fitting to separate.... | 01/05/1993 |
| 5062452 | Valve member and method of making such a member A valve member comprising a lower support portion and an upper seal portion. The support portion is made of a relatively rigid plastic and the seal portion is made of a relatively soft plastic. The two plastic portions are integrally merged to form a sing... | 11/05/1991 |
| 4886085 | Vacuum check valve and method of control A value opening air flow control ring requires the poppet to travel a controlled distance off the poppet seat to obtain substantially unrestricted air flow, the restricted flow occurring during air flow pulsations which acts to inhibit valve pulsations an... | 12/12/1989 |
| 4683910 | High-speed protective check valving for pressure transducers and the like Sudden increases in fluid pressure which could be injurious to the diaphragm and seals of a sensitive capacitive pressure transducer, or the like, are instantly protectively blocked or "checked" automatically by a miniature naturally-powered valve having ... | 08/04/1987 |
| 4682625 | Springloaded shutoff valve apparatus Shutoff valve apparatus includes a spring-loaded piston with two guide portions disposed in bores and the piston includes a fluid passage extending through the piston and communicating with one of the bores in which a guide element is disposed. Any back p... | 07/28/1987 |
| 4667925 | Quick coupling hose connection with double acting backflow preventing valve An instant coupling comprises a male element (9) and a female element (1) which comprises a chamber (4) containing a valve (5) provided with a first sealing surface (10) which, when pressurized water is present, rests against a seat (12) and shuts-off wat... | 05/26/1987 |
| 4643221 | Vacuum check valve A vacuum check valve member has a lip arrangement, which provides one sealing portion, and an inner reinforced second sealing portion, the valve member, and particularly the valve lip, acting to tend to pull itself closed with minimal flow across valve me... | 02/17/1987 |
| 4628959 | Vacuum check valve A vacuum check valve assembly having an axially guided poppet valve and a minimal restriction to air flow. The poppet valve has a seal made of a fluoro-silicone rubber which has excellent non-sticking and non-leaking characteristics over a wide temperatur... | 12/16/1986 |
| 4215717 | Unidirectional valve A unidirectional valve includes a generally tubular housing through which fluid can flow substantially in a straight line. The housing has an interior valve seat portion at the inlet end, in the direction of desired flow, and a valve member which is axial... | 08/05/1980 |
| 4091837 | Freezeproof breather valve A valve for controlling the pressure within a tank to prevent excessive above or below atmospheric pressure conditions, including a pressure responsive valve and a vacuum responsive valve, wherein each valve includes a pallet with seals and blowdown rings... | 05/30/1978 |
| 4026318 | Valve for giant tires A valve for giant tires comprises a tubular element and a valve member slidable within the tubular element for opening and closing the valve. The tubular element comprises a first section for connection to the valve stem of a tire, a second section formin... | 05/31/1977 |
| 4016900 | Springless valve for pneumatic tires and the like Valve member is supported by clips which slide along fitting as valve is opened or closed by air pressure. Radial openings in wall of fitting may be exposed for discharge by backing fitting off stem. Especially adapted for fast filling and discharge of ai... | 04/12/1977 |
