GB2245325A - Air line connections for spray guns - Google Patents

Air line connections for spray guns Download PDF

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Publication number
GB2245325A
GB2245325A GB9115354A GB9115354A GB2245325A GB 2245325 A GB2245325 A GB 2245325A GB 9115354 A GB9115354 A GB 9115354A GB 9115354 A GB9115354 A GB 9115354A GB 2245325 A GB2245325 A GB 2245325A
Authority
GB
United Kingdom
Prior art keywords
hose
gun
ball
handle
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB9115354A
Other versions
GB2245325B (en
GB9115354D0 (en
Inventor
Rowland Charles Smith
Anthony John Bate
David Peter Whitby
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ITW Ltd
Original Assignee
ITW Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB888802130A external-priority patent/GB8802130D0/en
Application filed by ITW Ltd filed Critical ITW Ltd
Priority to GB9115354A priority Critical patent/GB2245325B/en
Publication of GB9115354D0 publication Critical patent/GB9115354D0/en
Publication of GB2245325A publication Critical patent/GB2245325A/en
Application granted granted Critical
Publication of GB2245325B publication Critical patent/GB2245325B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/0081—Apparatus supplied with low pressure gas, e.g. "hvlp"-guns; air supplied by a fan
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits
    • B05B15/652—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits whereby the jet can be oriented
    • B05B15/654—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits whereby the jet can be oriented using universal joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
    • B05B7/0815—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter
    • B05B7/0823—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter comprising a rotatable spray pattern adjusting plate controlling the flow rate of the spray shaping gas jets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/22—Couplings of the quick-acting type in which the connection is maintained by means of balls, rollers or helical springs under radial pressure between the parts
    • F16L37/23—Couplings of the quick-acting type in which the connection is maintained by means of balls, rollers or helical springs under radial pressure between the parts by means of balls

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)

Abstract

A spray gun is described having a ball and socket formation to connect an air delivery hose to the gun handle. The handle has a tube (12) terminating at a ball (170), a hose connection stem (172) has a serrated region (174) with a push fit into a hose. Tubular connector body (176) is screwed onto stem (172) defining a cavity (178) which holds captive a flanged seat member (180) biased upwardly by a compression spring (182). Sleeve (184) fits over the forward end of the body (176) on which it is held captive by retaining ring (186) cooperating with circumferential rib (188) on the inner surface of sleeve (184). Coil spring (190) biases sleeve (184) forwardly to abut ring (186). Body (176) is formed with three circumferentially spaced apertures through which latching balls (192) protrude, the balls being held captive between body (178) and sleeve (184). An automatic shut-off is provided which cuts off the flow of air when the gun is removed from the hose. <IMAGE>

Description

IMPROVEXENTS IN SPRAY GUNS This invention relates to an improved spray gun and more particularly to a ball and socket connector for connecting an air line to the spray gun handle.
In existing hand held spray guns the air is supplied to the gun handle via a hose with the disadvantage that it restricts the movement of the hand held gun and with continuous use makes the movement of the gun cumbersome and tiring for the operator.
An aim of the present invention is to overcome the above mentioned disadvantage and provide an improved ball and socket connection.
According to the present invention there is provided a spray gun having a ball formation at the base of the handle for reception in a socket formation at the end of an air delivery hose so that the gun can be connected air-tightly to the hose while being pivotable at the ball and socket joint at an acute angle to the handle, wherein an automatic shut-off is provided which cuts off the flow of air when the gun is removed from the hose.
Preferably a further connection is made between the hose and ball and socket joint to increase the pivoting angle of the hose relative to the handle by 150.
An embodiment of the improved ball and socket joint will now be described, by way of example only, with reference to the accompanying drawings, in which: Fig. 1 is an exploded perspective view of a ball and socket connector; and Fig. 2 is an axial cross-sectional view of the assembled ball and socket joint shown in Fig. 1.
The ball and socket joint illustrated is used between an air supply hose and an air connection of a tube extending through the handle of the gun.
The problem hitherto presented by existing spray guns is the provision of a satisfactory connection between the handle tube and an air supply hose (not shown) leading from a compressor or other air source to the spray gun. With the high volume low pressure air flow that is employed, the hose has to be of relatively large diameter, and if it has to be rigidly connected to the gun body, an operator would encounter relatively high forces from bending the hose during the operation of pait spraying which would make the gun hard to ##e. T problem is solved by the provision of a ball and socket joint between the hose and an air delivery tube 12 in the spray gun handle.
As shown in Figs. 1 and 2 the handle tube 12 terminates at a ball formation 170. A hose connector stem 172 has a serrated lower region 174 that is a push fit into a plastics or rubber air hose. A tubular connector body 176 is screwed onto the stem 172 and defines with it a cavity 178 in which is held captive a flanged seat member 180 that is biased upwardly by coil spring 182 in compression.
A sleeve 184 fits over the forward end of the body 176 on which it is held captive by a retaining ring 186 which cooperates with a circumferential rib 188 on the inner surface of the sleeve 184. A coil spring 190 biases the sleeve 184 forwardly into a position abutting the ring 186. The body 176 is formed towards its forward end with at least three circumferentially spaced apertures through which latching balls 192 can protrude, the balls being held captive between the body 176 and the sleeve 184. When the sleeve 184 is forward, the rib 188 registers with the balls 192 to prevent them retracting, but when the sleeve 184 is pulled back the rib 188 is clear of the balls 192 which are free to retract. The action of the spring 190 is to provide a normally locked condition of the balls 192.
To connect the hose to the handle, the sleeve 184 is pulled back and the ball 170 of the handle tube 12 is inserted into the body 176, after which the sleeve 184 is released to latch the balls 192 in their projecting position preventing the ball 170 from being withdrawn.
The seat member 180 has a spherical face 193 that is urged by spring 182 against the ball 170 to make an airtight seal therewith. With this arrangement the gun and hose are releasably but securely connected together, but the ball and socket joint allows free pivoting movement within a range of angular travel that is sufficient for most spraying purposes.
A regulating valve for the air may be built into the gun itself or into the hose connector. The hose connector may be provided with an automatic shut-off which cuts off the flow of air when the gun is removed from the hose.
In a modified construction of the hand-held spray gun the ball and socket joint connecting the spray gun handle with an air supply hose is connected to a further universal connection, i.e. another ball and socket joint, to increase the pivot angle of the hose relative to the handle through an acute angle in excess of 250.

Claims (6)

CLAIMS:
1. A spray gun having a ball formation at the base of the handle for reception in a socket formation at the end of an air delivery hose so that the gun can be connected air-tightly to the hose while being pivotable at the ball and socket joint at an acute angle to the handle, wherein an automatic shut-off is provided which cuts off the flow of air when the gun is removed from the hose.
2. A spray gun as claimed in Claim 1, wherein a further connection is made between the hose and ball and socket joint to increase the pivoting angle of the hose relative to the handle by 150.
3. A spray gun as claimed in Claim 1 or 2, wherein the socket joint connecting the spray gun handle with an air supply hose is connected to a further universal connection to increase the pivot angle of the hose relative to the handle.
4. A spray gun as claimed in Claim 3, wherein the universal connection is another ball and socket joint through an acute angle in excess of 250.
5. A spray gun as claimed in any preceding claim, wherein a regulating valve for the air is built into the gun or into the hose connector.
6. A spray gun substantially as hereinbefore described with reference to and as shown by the accompanying drawings.
GB9115354A 1988-02-01 1991-07-16 Improvements in spray guns Expired - Fee Related GB2245325B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9115354A GB2245325B (en) 1988-02-01 1991-07-16 Improvements in spray guns

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888802130A GB8802130D0 (en) 1988-02-01 1988-02-01 Spraygun
GB9115354A GB2245325B (en) 1988-02-01 1991-07-16 Improvements in spray guns

Publications (3)

Publication Number Publication Date
GB9115354D0 GB9115354D0 (en) 1991-08-28
GB2245325A true GB2245325A (en) 1992-01-02
GB2245325B GB2245325B (en) 1992-05-20

Family

ID=26293393

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9115354A Expired - Fee Related GB2245325B (en) 1988-02-01 1991-07-16 Improvements in spray guns

Country Status (1)

Country Link
GB (1) GB2245325B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1343903A (en) * 1971-04-13 1974-01-16
US4035004A (en) * 1976-03-18 1977-07-12 Hengesbach Robert W Ball and socket connector and combination thereof with spray gun

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1343903A (en) * 1971-04-13 1974-01-16
US4035004A (en) * 1976-03-18 1977-07-12 Hengesbach Robert W Ball and socket connector and combination thereof with spray gun

Also Published As

Publication number Publication date
GB2245325B (en) 1992-05-20
GB9115354D0 (en) 1991-08-28

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20000131