Patents by Inventor Wilhelmus J. J. Maas
Wilhelmus J. J. Maas has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5749501Abstract: The shroud and skeletal body assembly for a trigger sprayer comprises: a skeletal body including a lower portion, an upright body portion extending upwardly from the lower portion and having a forwardly extending piston receiving portion, a waterway defining portion above the piston receiving portion and extending forwardly of the upright body portion, and hook structure extending rearwardly from the upright body portion; and a shroud having a top wall, spaced apart side walls, a back wall, and a short rear bottom wall extending forwardly from the back wall, and latch structure extending between the side walls at a position to be engaged by the hook structure when the shroud is brought into engagement with the skeletal body.Type: GrantFiled: June 10, 1996Date of Patent: May 12, 1998Assignee: AFA Products, Inc.Inventors: Wilhelmus J. J. Maas, Petrus L. W. Hurkmans
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Patent number: 5641125Abstract: The nozzle assembly comprises two pieces, they being: a nozzle cap; and, an integral nose bushing on which the nozzle cap is threadedly received. The integral nose bushing includes a body portion received and mounted in a body of a trigger sprayer and a bushing portion integral with the bushing portion. The bushing portion includes a generally cylindrical portion having a distal end and a proximal end with the proximal end having threads thereon and the distal end having a smooth outer cylindrical surface. The cylindrical portion has an annular slot therein defining an outer cylindrical flange and a central cylindrical portion. The central cylindrical portion has an outer end which extends outwardly of the outer cylindrical flange and which has an outer end having an annular wall defining therein a swirl cavity. The nose bushing has a passage therein communicating a waterway in the bushing portion with the annular slot in the cylindrical portion.Type: GrantFiled: February 23, 1995Date of Patent: June 24, 1997Assignee: AFA Products, Inc.Inventors: Douglas S. Martin, Wilhelmus J. J. Maas, Petrus L. W. Hurkmans
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Patent number: 5626259Abstract: An apparatus for the simultaneous dispensing of two liquids from two separate liquid reservoirs at least two actuations are necessary in order for the venting of the interior and relieving of the back pressure in the liquid reservoirs. The first actuation is accomplished by rotating a valve having two mating valve members for opening and closing two sets of vertically extending passageways. The first set of passageways allows liquid to flow from the two liquid reservoirs to the intake stem of the spray pump dispenser. The second set of passageways connects both liquid reservoirs to a venting passageway. The second actuation is accomplished by pulling the trigger on the spray pump dispenser so the venting passageway is exposed to the ambient atmosphere. The venting passage reseals when the trigger returns to its rest position.Type: GrantFiled: November 16, 1995Date of Patent: May 6, 1997Assignee: AFA Products, Inc.Inventors: Wilhelmus J. J. Maas, Petrus W. L. Hurkmans
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Patent number: 5561884Abstract: "Suction attachment, spray member suitable for use in such a suction attachment, and vacuum cleaner provided with such a suction attachment."A suction attachment (1) for a vacuum cleaner (119) is provided, which suction attachment (1) has an underpressure chamber (7) with a suction opening (23, 25) and a discharge channel (9) for connection to a suction motor assembly (121) of the vacuum cleaner (119). In the underpressure chamber (7) there is an inner chamber (11) which comprises a spray member (73) for distributing a cleaning liquid over a surface to be cleaned. The spray member (73) comprises a distributor plate (79) which is positioned near an upper side (19) of the inner chamber (11) in a central position relative to an orifice (75) of the inner chamber (11). The distributor plate (79) extends parallel to the side walls (51, 53) of the inner chamber (11) and can be sprayed with the cleaning liquid from a spray nozzle (99).Type: GrantFiled: September 9, 1994Date of Patent: October 8, 1996Assignee: U.S. Philips CorporationInventors: Everardus J. Nijland, Wilhelmus J. J. Maas
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Patent number: 5477989Abstract: The child-resistant nozzle cover is used to cover a nozzle cap of a nozzle assembly for a trigger sprayer having a body, the nozzle assembly including a nose bushing at a front end of the body, the nozzle cap being rotatably mounted on the nose bushing of the sprayer, and the nozzle cap having a proximal end, a distal end including a generally annular rear edge, and an outer surface. The cover comprises a generally annular hood substantially covering the outer surface of the nozzle cap, being rotatable about the nozzle cap and nose bushing and having a proximal end, a distal end, an outer peripheral surface and an inner generally annular surface. Retaining structure is provided at the proximal end of the hood for retaining the hood on the nozzle assembly.Type: GrantFiled: October 28, 1994Date of Patent: December 26, 1995Assignee: AFA Products, Inc.Inventors: Wilhelmus J. J. Maas, Petrus L. W. Hurkmans
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Patent number: 5467900Abstract: The trigger sprayer comprises: a body having a cylinder therein; a liquid inlet in communication with the cylinder; an outlet waterway in communication with the cylinder; an outlet nozzle which has an outlet orifice and which is movable to and from a position in communication with the waterway; a piston having an inner and an outer end and being received in said cylinder and being movable between an outer at rest position and an inner pumping stroke position during the pumping strokes of the piston in the cylinder; a trigger operatively coupled to the body and acting on the outer end of the piston; a precompression valve in the cylinder, the valve being operable to allow liquid in the cylinder to enter the waterway only after a predetermined pressure is established in the cylinder and to stop liquid from entering the waterway when the pressure in the cylinder falls below the predetermined pressure; and, biasing structure for biasing the piston away from the valve.Type: GrantFiled: March 16, 1994Date of Patent: November 21, 1995Assignee: AFA Products, Inc.Inventors: Wilhelmus J. J. Maas, Petrus L. W. Hurkmans
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Patent number: 5397060Abstract: The nozzle assembly for a foam-spray-off trigger sprayer comprises a barrel with perforated end wall member and a nozzle member which has an elongate central axis and which is constructed to be mounted on the outer end of a nose bushing having liquid direction structure for directing liquid into a swirl. The nozzle member has a rear barrel portion and a front barrel portion with an internal wall therebetween. The internal wall has an orifice located on the central axis and is positioned to receive swirling liquid from the nose bushing for injection into the front barrel portion. The barrel with perforated end wall member includes an outer hollow cylindrical body and a transversely extending perforated wall mounted in the cylindrical body and structure for mounting the barrel with perforated end wall member for axial movement on and relative to the front barrel portion.Type: GrantFiled: January 21, 1994Date of Patent: March 14, 1995Assignee: AFA Products, Inc.Inventors: Wilhelmus J. J. Maas, Petrus L. W. Hurkmans
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Patent number: 5341965Abstract: The trigger operated pumping mechanism for a fluid dispensing device comprises a body extending rearwardly from a discharge end of the fluid dispensing device toward a hand gripping formation of the fluid dispensing device. The body has a hollow cylinder therein extending to a rear wall. A piston is received in the cylinder. A trigger is movably mounted to the body, has a front side and a back side, and is coupled to the piston. A biasing mechanism for biasing the trigger away from the body to bias the piston coupled to the trigger out of the cylinder is positioned between the body and the trigger. The biasing mechanism includes non-metal, non-coiled, elongate spring structure having opposite ends, extending rearwardly from the trigger toward the hand gripping formation, having one end positioned adjacent to and acting against the trigger and having another end positioned rearwardly of the trigger adjacent the body at a location which is closer to the rear wall of the cylinder than to the trigger.Type: GrantFiled: July 14, 1993Date of Patent: August 30, 1994Assignee: AFA ProductsInventors: Wilhelmus J. J. Maas, Petrus L. W. Hurkmans
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Patent number: 5318206Abstract: The trigger operated pumping mechanism for a fluid dispensing device comprises a body and the pumping mechanism comprises a cylinder in the body of the dispensing device, a piston received in the cylinder and having a piston rod extending outwardly therefrom to an outer end and a trigger movably mounted to the body and having a front side and a back side. A first coupling structure is provided on the outer end of the piston rod for coupling to the trigger. A second coupling structure is provided on the back side of the trigger for releasably coupling to the first coupling structure on the piston rod in a snap-fitting manner and a spring is provided outside of the cylinder for biasing the trigger away from the body.Type: GrantFiled: February 24, 1992Date of Patent: June 7, 1994Assignee: AFA Products, Inc.Inventors: Wilhelmus J. J. Maas, Petrus L. S. Hurkmans
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Patent number: 5297701Abstract: The trigger operated dispensing device for mounting to a container comprises: a body made of plastic material and having a pumping chamber therein. The pumping chamber has an open outer end and an inner back wall, a pumping mechanism associated with the body and includes a plastic piston situated in the pumping chamber and a plastic trigger coupled to the body. Non-metal biasing structure is situated between the trigger and the body for biasing the piston out of the pumping chamber. Non-metal fluid inlet structure and non-metal fluid outlet structure are associated with the pumping chamber and comprise first and second plastic flap valves in or adjacent the back wall. Also provided is non-metal structure for coupling the body to the container. The trigger operated dispensing device has only parts made of non-metal or synthetic material therein.Type: GrantFiled: February 24, 1992Date of Patent: March 29, 1994Assignee: AFA Products, Inc.Inventors: Emile B. Steijns, Wilhelmus J. J. Maas, Petrus L. W. Hurkmans
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Patent number: 5267692Abstract: The adjustable nozzle assembly for a trigger sprayer comprises a nose bushing and an integral nozzle cap capable of being screwed upon the bushing. The nozzle cap has a discharge orifice located in its front face and a flange skirt extending from a front wall thereof. A nozzle cap flange skirt is threaded inside the rear portion thereof and an internally contoured or stepped surface is located forwardly of the threads to provide reduced diameter annular surfaces at two locations rearward of an inner wall surface of the cap and forward of the internal threads inside the nozzle cap flange skirt.Type: GrantFiled: July 13, 1992Date of Patent: December 7, 1993Assignee: AFA Products Inc.Inventors: Wilhelmus J. J. Maas, Petrus L. W. Hurkmans
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Patent number: 5238152Abstract: The child resistant trigger sprayer bottle cap/bottle neck assembly comprises a trigger sprayer having a body including a cylindrical base. First coupling structure in the form of at least one deflectable tab with an opening therein is incorporated into the cylindrical base for coupling to a bottle neck. Second coupling structure in the form of a locking lug is provided on a bottle neck and is adapted to engage and couple with the first coupling structure by reason of the lug being received in the opening in the tab. There is also provided a locking ring which is received over the cylindrical base mounted on the neck for maintaining the first and second coupling structures in a coupled locked position.Type: GrantFiled: February 24, 1992Date of Patent: August 24, 1993Assignee: AFA Products Inc.Inventors: Wilhelmus J. J. Maas, Petrus L. W. Hurkmans
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Patent number: 5228602Abstract: The trigger operated pumping mechanism for a fluid dispensing device comprises a body. The pumping mechanism comprises a cylinder in the body of the dispensing device, a piston received in the cylinder, a trigger movably mounted to the body and having a front side and a back side, and being coupled to the piston, and a non-metal biasing mechanism for biasing the trigger away from the body to bias the piston coupled to the trigger out of the cylinder. The biasing mechanism includes a separate, non-coiled elongate, generally flat, spring having elongate, opposed flat surfaces and opposite ends and being positioned between the body and the trigger. The trigger back side has a back wall. The spring has one flat surface of one end portion at one end of the spring positioned adjacent the back wall of the trigger and has the other end of the spring positioned rearwardly of the trigger and engaging against the body.Type: GrantFiled: February 24, 1992Date of Patent: July 20, 1993Assignee: AFA Products Inc.Inventors: Wilhelmus J. J. Maas, Petrus L. W. Hurkmans
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Patent number: 5152436Abstract: The snap-in trigger (30) for mounting in a trigger sprayer housing (25) comprises a trigger (30) which includes flexible members (80,85) carrying pivotal mounting elements (100,105) which mate with corresponding elements (110,115) in a base, e.g., the sprayer housing (25). The flexible members (80,85) are flexed towards each other during attachment of the trigger (30) to the base, to allow easy mating of the pivotal mounting elements (100,105,110,115). The trigger (30) also includes a flexible locking member (90) which can be pivoted between a first position in which the locking member is spaced apart from the vicinity of the pivotal mounting elements (100,105,110,115), (e.g.Type: GrantFiled: May 25, 1991Date of Patent: October 6, 1992Assignee: AFA Products, Inc.Inventors: Wilhelmus J. J. Maas, Petrus L. W. Hurkmans
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Patent number: 4991778Abstract: The adjustable nozzle assembly for a trigger sprayer comprises a nose bushing and an integral nozzle cap capable of being screwed upon the bushing. The nozzle cap has a discharge orifice located in its front face and a flange skirt extending from a front wall thereof. A nozzle cap flange skirt is threaded inside the rear portion thereof and an internally contoured or stepped surface is located forwardly of the threads to provide reduced diameter annular surfaces at two locations rearward of an inner wall surface of the cap and forward of the internal threads inside the nozzle cap flange skirt.Type: GrantFiled: November 16, 1989Date of Patent: February 12, 1991Assignee: AFA Products, Inc.Inventors: Wilhelmus J. J. Maas, Petrus L. W. Hurkmans
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Patent number: D346547Type: GrantFiled: February 24, 1992Date of Patent: May 3, 1994Assignee: AFA Products Inc.Inventors: Emile B. Steijns, Wilhelmus J. J. Maas
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Patent number: D346962Type: GrantFiled: February 24, 1992Date of Patent: May 17, 1994Assignee: AFA CorporationInventors: Emile B. Steijns, Wilhelmus J. J. Maas
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Patent number: D347788Type: GrantFiled: February 24, 1992Date of Patent: June 14, 1994Assignee: AFA Products, Inc.Inventors: Emile B. Steijns, Wilhelmus J. J. Maas
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Patent number: D353321Type: GrantFiled: October 1, 1993Date of Patent: December 13, 1994Assignee: AFA Products, Inc.Inventors: Emile B. Steijns, Wilhelmus J. J. Maas
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Patent number: D355361Type: GrantFiled: October 1, 1993Date of Patent: February 14, 1995Assignee: AFA Products, Inc.Inventors: Emile B. Steijns, Wilhelmus J. J. Maas