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US3945571A Expired / Lapsed US ⏱️ 0.0 years remaining

Self-contained portable pressure apparatus and hand gun assembly

Assignee: Individual
•
Filing: 1975-01-23
•
Granted: 1976-03-23
•
Expires: 1995-01-23
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Abstract

Abstract A portable self-contained pressure apparatus including a pressurized tank releasably fastened on a backpack carrier for carrying the tank on the back of a user during operation thereof while a handle attachment on the tank and backpack carrier assembly allows them to be manually carried to the point of use. A line pressure control and flexible hose coupling assembly couples the tank pressure to an air pressure responsive load device herein shown as a hand-held spray gun with a feed hopper for applying a texture coating to walls. The line pressure control reduces the tank pressure and affords selective pressure ranges as well as on-off pressure control to the spray gun. The line pressure control and flexible hose coupling assembly are detachable from the pressurized tank when not in use and carried in the feed hopper.

Inventors

  • 👤 James E. Rash

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 20:23
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/14; B05B7/1404; B05B7/1413; B05B7/1418; B05B7/1427

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 319 words
A portable, self-contained pressure apparatus readily carried around by hand to the location of operation and supported primarily by the back of a user when in operation, said apparatus comprising, in combination: a pressurized tank, a backpack carrier adapted to be releasably mounted on the back of a person, said carrier having a tank support frame and releasable tank fastening means on the support frame for releasably fastening the pressurized tank to the support frame, said carrier having a pair of laterally spaced, generally arcuate rigid shoulder straps attached at one end to an upper portion of said upright portion extending out away and then down therefrom to mount the tank support frame on the shoulders of the user and to dispose said support frame and tank at an angle of inclination with the tank outlet and at an elevated position in a demounted at rest position. handle means for hand carrying the backpack carrier and tank to a point of use, said handle means including a C-clamp portion surrounding the tank positioned and centered about the midpoint between the top and bottom of the tank, releasable fastening means holding the C-clamp portion on the tank and a handle grip portion affixed to and disposed a distance away from said C-clamp portion, a line pressure control and coupling means coupled to said tank to regulate the amount of air pressure from said tank to a pressure responsive load device, and a pressure driven spray gun coupled to the output of said line pressure control and coupling means, said spray gun being a pattern spray gun for spraying a fluent texture coating material on walls and the like, said spray gun having a feed hopper for storing a batch of fluent texture coating material and delivering said material to the spray gun which selectively sprays the material in response to air pressure from said line pressure control and coupling means.
Claim 2
Dependent Claim 319 words
A portable, self-contained pressure apparatus readily carried around by hand to the location of operation and supported primarily by the back of a user when in operation, said apparatus comprising, in combination: a pressurized tank, a backpack carrier adapted to be releasably mounted on the back of a person, said carrier having a tank support frame and releasable tank fastening means on the support frame for releasably fastening the pressurized tank to the support frame, said carrier having a pair of laterally spaced, generally arcuate rigid shoulder straps attached at one end to an upper portion of said upright portion extending out away and then down therefrom to mount the tank support frame on the shoulders of the user and to dispose said support frame and tank at an angle of inclination with the tank outlet and at an elevated position in a demounted at rest position. handle means for hand carrying the backpack carrier and tank to a point of use, said handle means including a C-clamp portion surrounding the tank positioned and centered about the midpoint between the top and bottom of the tank, releasable fastening means holding the C-clamp portion on the tank and a handle grip portion affixed to and disposed a distance away from said C-clamp portion, a line pressure control and coupling means coupled to said tank to regulate the amount of air pressure from said tank to a pressure responsive load device, and a pressure driven spray gun coupled to the output of said line pressure control and coupling means, said spray gun being a pattern spray gun for spraying a fluent texture coating material on walls and the like, said spray gun having a feed hopper for storing a batch of fluent texture coating material and delivering said material to the spray gun which selectively sprays the material in response to air pressure from said line pressure control and coupling means.
Claim 3
Dependent Claim 52 words
A portable, self-contained pressure apparatus as set forth in claim 1 wherein said tank support frame is generally L-shaped with a base portion and an upright portion and fastening means on the upright portion extending around the tank and releasably connected at the ends to fasten the tank to the support frame.
Claim 4
Dependent Claim 48 words
A portable, self-contained pressure apparatus as set forth in claim 1 wherein the center of gravity of the tank on the carrier support frame is closer to the bottom than the top in the at-rest position so that the assembly does not tend to tip toward the top.
Claim 5
Dependent Claim 54 words
A portable, self-contained pressure apparatus as set forth in claim 1 wherein said backpack carrier has a belt extending through slots in the support frame adapted to extend around the body of the user and having a releasable fastener at the free ends to fasten the support frame to the body of the user.
Claim 6
Dependent Claim 28 words
A portable, self-contained pressure apparatus as set forth in claim 1 wherein each of said shoulder straps includes a rigid core portion and an outer resilient cushion portion.
Claim 7
Dependent Claim 37 words
A portable, self-contained pressure apparatus as set forth in claim 1 wherein said grip portion handle means includes a rigid annular core portion and an outer resilient cushion portion together with a slot adjacent the grip portion.
Claim 8
Dependent Claim 23 words
A portable, self-contained pressure apparatus as set forth in claim 1 wherein said pressurized tank has a flow control valve at the top.
Claim 9
Dependent Claim 96 words
A portable, self-contained pressure apparatus as set forth in claim 7 wherein said line pressure control and coupling means includes: a first pressure regulator valve removably mounted on the flow control valve of the tank to reduce the tank pressure, a second pressure regulator valve coupled to said first regulator valve having a pressure indicator and a manually operable pressure adjustment member to vary the pressure over a lower range down to zero pressure, and an on-off valve coupled to said second pressure regulator valve to selectively turn the pressure from the tank on and off.
Claim 10
Dependent Claim 46 words
A portable, self-contained pressure apparatus as set forth in claim 8 wherein there is provided a first flexible flow line coupled between said first and second pressure regulator valves and a second flexible flow line coupled between said second pressure regulator valve and said on-off valve.
Claim 11
Dependent Claim 30 words
In portable, self-contained pressure apparatus as set forth in claim 9 wherein said on-off valve has coupling means to releasably couple the on-off valve to a pressure responsive load device.
Claim 12
Dependent Claim 44 words
Portable self-contained pressure and spray apparatus as set forth in claim 1 wherein said feed hopper has a handle and a top opening and is sized to receive said line pressure control and coupling means and said spray gun when detached from said tank.

References Cited (Backward Citations)

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US2083039A Cited
US2305269A Cited
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GB746918A Cited
US2932127A Cited
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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) 1979-03-23 1979-09-22 1980-03-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-03-23 1983-09-22 1984-03-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-03-23 1987-09-22 1988-03-23 $7700.00 Window Closed / Lapsed

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