US3813044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure dosing apparatus, especially for grinding and polishing machines
Assignee: Individual
•
Filing: 1973-01-29
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Granted: 1974-05-28
•
Expires: 1993-01-29
Abstract
Abstract A high pressure dosing apparatus includes a housing with a chamber for receiving material to be dispensed. A dispensing output is controlled by a control valve which operates in response to pressure within the chamber so that the outlet is opened only when the pressure within the chamber exceeds a given level. A pressure generating means for controlling pressure within the chamber includes a pressure operated piston having a piston rod extending into the chamber. A pair of stops are provided for limiting the movement of the piston in opposite directions.
Inventors
- 👤 W Westenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:50
CPC Classifications
B; B05; B05B; B05B1/00; B05B1/30; B05B1/3006; B05B9/00; B05B9/01; B24; B24B; B24B57/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
250 words
In a high pressure dosing apparatus for dispensing abrasive and polishing material, having a housing with a material supply chamber and a dispensing outlet in said chamber, a bore in said housing extending in longitudinal alignment with said supply chamber, passage means interconnecting said supply chamber and said bore, and a cOntrol valve mechanism in said housing for normally closing said dispensing outlet, the improvement wherein said control valve mechanism comprises a nozzle pin extending longitudinally through said supply chamber, through said passage means, and through said bore, said nozzle pin comprising a handle end extending out of said housing and a valve closing end located in said supply chamber adjacent to said dispensing outlet for opening and closing said dispensing outlet, a differential surface on said nozzle pin adjacent to said dispensing outlet for lifting said valve closing end of said nozzle pin off said dispensing outlet in response to a given pressure in said supply chamber, said apparatus further comprising control means in said bore and operatively connected to said nozzle pin for varying the pressure response characteristic of said nozzle pin, and pressure supply means operatively connected to said supply chamber for applying said given pressure to said differential surface, said pressure supply means including piston means and cylinder means as well as stop means positioned to limit the stroke of said piston means, said handle end of said nozzle pin outside said housing permitting the manual operation of said nozzle pin independently of said given pressure.
Claim 2
Dependent Claim
250 words
In a high pressure dosing apparatus for dispensing abrasive and polishing material, having a housing with a material supply chamber and a dispensing outlet in said chamber, a bore in said housing extending in longitudinal alignment with said supply chamber, passage means interconnecting said supply chamber and said bore, and a cOntrol valve mechanism in said housing for normally closing said dispensing outlet, the improvement wherein said control valve mechanism comprises a nozzle pin extending longitudinally through said supply chamber, through said passage means, and through said bore, said nozzle pin comprising a handle end extending out of said housing and a valve closing end located in said supply chamber adjacent to said dispensing outlet for opening and closing said dispensing outlet, a differential surface on said nozzle pin adjacent to said dispensing outlet for lifting said valve closing end of said nozzle pin off said dispensing outlet in response to a given pressure in said supply chamber, said apparatus further comprising control means in said bore and operatively connected to said nozzle pin for varying the pressure response characteristic of said nozzle pin, and pressure supply means operatively connected to said supply chamber for applying said given pressure to said differential surface, said pressure supply means including piston means and cylinder means as well as stop means positioned to limit the stroke of said piston means, said handle end of said nozzle pin outside said housing permitting the manual operation of said nozzle pin independently of said given pressure.
Claim 3
Dependent Claim
69 words
The high pressure dosing apparatus of claim 1, wherein said dispensing outlet comprises a valve seat, said control means comprising a spring located in said bore for normally urging said nozzle pin against said valve seat, said nozzle pin having a shoulder within said bore against which the spring rests, and an adjustable stopper means in said bore for biasing the spring against said shoulder of the nozzle pin.
Claim 4
Dependent Claim
57 words
The high pressure dosing apparatus of claim 2, wherein said passage means comprise a wall opposite said dispensing outlet, a hole in said wall axially aligned with said outlet, and with said bore, and means for sealing said hole against said supply chamber and the nozzle pin which extends movably through said hole and said sealing means.
Claim 5
Dependent Claim
44 words
The high pressure dosing apparatus of claim 2, wherein said adjustable stopper means comprise a bushing in said bore positioned to limit the movement of said nozzle pin in a direction away from said valve seat, and an adjusting screw threaded into said bushing.
Claim 6
Dependent Claim
26 words
The high pressure dosing apparatus of claim 4, wherein said adjusting screw has a central aperture, through which said nozzle pin extends out of said housing.
Claim 7
Dependent Claim
49 words
The high pressure dosing apparatus of claim 1, wherein the end of said nozzle pin positioned to engage said valve seat has a conical tip, the diameter of said nozzle pin in said supply chamber being greater than the diameter of said valve seat to form said differential surface.
Claim 8
Dependent Claim
49 words
The high pressure dosing apparatus of claim 1, wherein the end of said nozzle pin positioned to engage said valve seat has a spherical shape, the outer diameter of said valve seat being smaller than the diameter of said end of said nozzle pin to form said differential surface.
Claim 9
Dependent Claim
78 words
The high pressure dosing apparatus of claim 2, wherein said dispensing outlet comprises an intermediate member connected to said housing, said intermediate member having a longitudinal bore, a spray cap on the end of said intermediate member away from said chamber, cup screw means for holding said spray cap on said intermediate member, said valve seat being positioned between said spray cap and said intermediate member, said nozzle pin extending through said longitudinal bore in said intermediate member.
Claim 10
Dependent Claim
54 words
The high pressure dosing apparatus of claim 8, further comprising a bearing member positioned within said longitudinal bore of said intermediate member for supporting and guiding said nozzle pin, said bearing member having a substantially square cross sectional shape with rounded edges engaging the internal surface of said longitudinal bore of said intermediate member.
Claim 11
Dependent Claim
60 words
The high pressure dosing apparatus of claim 1, wherein said pressure supply means comprIse means for coupling displacement of said piston means to said supply chamber, said coupling means including a piston rod sealingly extending from said piston means into said supply chamber, said piston means having a reaction surface greater than the cross sectional area of said piston rod.
Claim 12
Dependent Claim
65 words
The high pressure dosing apparatus of claim 10, further comprising a head member fixedly mounted on said housing at the end of said cylinder away from said supply chamber, said stop means comprising a bearing member mounted in said head member, a stop bolt threaded into said bearing member and having one end positioned to engage said piston, and means for rotating said stop bolt.
Claim 13
Dependent Claim
124 words
The high pressure dosing apparatus of claim 11, further comprising a bearing bushing having an outer end, said bearing bushing being positioned within said head member axially aligned with said stop bolt, said outer end of said bearing bushing extending out of said head member, said head member having an internally extending flange, said bearing bushing further having an externally extending flange engaging said internally extending flange for inhibiting axial movement of said bearing bushing, said stop bolt extending into said bearing bushing, means for coupling said bearing bushing to said stop bolt for rotary movement while permitting relative axial movement of said bearing bushing and stop bolt, and manual knob means on said outer end of said bearing bushing externally of said apparatus.
Claim 14
Dependent Claim
57 words
The high pressure dosing apparatus of claim 11, wherein said bearing member comprises a nut having axially extending passages, said pressure supply means further comprising a source of air pressure coupled to said head member for moving said piston means, whereby air pressure from said source reaches said piston means through the passages in said bearing member.
Claim 15
Dependent Claim
34 words
The high pressure dosing apparatus of claim 10, wherein said piston rod sealingly extending from said piston means into said supply chamber is positioned at an acute angle with respect to said nozzle pin.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |