Patent US3917200A successfully refreshed from Google Patents.
US3917200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic boom support for hand tools
Assignee: Individual
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Filing: 1973-12-14
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Granted: 1975-11-04
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Expires: 1993-12-14
Abstract
Abstract A boom is connected to a support member through a hinge connection which permits both vertical and horizontal movement of the end of the boom. A pneumatic linear actuator, including a cylinder and a piston, is connected between the boom and the support member at the hinge such that the length of the actuator changes with vertical movement of the boom about the hinge support. A bleed-type adjustable pneumatic pressure regulator controls the air pressure applied to the actuator so as to exactly counterbalance the weight of the boom and tools supported on the end of the boom.
Inventors
- 👤 Jay Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:19
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/005; B25; B25H; B25H1/00; B25H1/0021; B25H1/0028
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
190 words
A movable support for a hand-manipulated tool, such as a spray gun, permitting a wide range of movement in both vertical and horizontal direction, comprising: a support member including a substantially horizontally extending first boom, a second boom forming an extension of said first boom, hinge means connecting one end of the second boom to the free end of said first boom, the hinge means providing movement of the second boom relatively to the first boom about a vertical as well as horizontal axis, means connecting the load to the other end of the second boom, a pneumatic linear actuator including a cylinder and piston, means, including at least a part of the hinge means, connecting one end of the actuator to the second boom and the other end of the actuator to the first boom such that the length of the actuator changes with vertical movement of the second boom about the horizontal axis of the hinge means, and means including a pneumatic pressure regulator connecting the cylinder to a pressurized pneumatic source, the regulator pressurizing the actuator sufficiently to counterbalance the weight of the second boom and load.
Claim 2
Dependent Claim
190 words
A movable support for a hand-manipulated tool, such as a spray gun, permitting a wide range of movement in both vertical and horizontal direction, comprising: a support member including a substantially horizontally extending first boom, a second boom forming an extension of said first boom, hinge means connecting one end of the second boom to the free end of said first boom, the hinge means providing movement of the second boom relatively to the first boom about a vertical as well as horizontal axis, means connecting the load to the other end of the second boom, a pneumatic linear actuator including a cylinder and piston, means, including at least a part of the hinge means, connecting one end of the actuator to the second boom and the other end of the actuator to the first boom such that the length of the actuator changes with vertical movement of the second boom about the horizontal axis of the hinge means, and means including a pneumatic pressure regulator connecting the cylinder to a pressurized pneumatic source, the regulator pressurizing the actuator sufficiently to counterbalance the weight of the second boom and load.
Claim 3
Dependent Claim
10 words
Apparatus of claim 1 wherein the pressure regulator is adjustable.
Claim 4
Dependent Claim
23 words
Apparatus of claim 1 wherein the regulator maintains substantially constant pressure in the cylinder with changes in volume as the actuator changes length.
Claim 5
Dependent Claim
12 words
Apparatus of claim 3 wherein the regulator is a bleeding type regulator.
Claim 6
Dependent Claim
239 words
A movable support for a hand-manipulated tool, such as a spray gun, permitting a wide range of movement in both a vertical and horizontal direction, comprising: a support member in the form of a first boom, a second boom forming an extension of said first boom, hinge means connecting the second boom to the support member, the hinge means providing vertical as well as horizontal movement of the second boom about the hinge means and including a first hinge unit secured to the support member and a second hinge unit secured to the second boom, the two hinge units being connected to each other and having mutually perpendicular hinge axes, means connecting the load to one end of the second boom, a pneumatic linear actuator including a cylinder and piston and pivotally secured at one end to the second boom adjacent the end secured to the second hinge unit, the other end of the linear actuator being pivotally connected to the common connection between the first and second hinge units, means connecting one end of the actuator to the second boom and the other end to the support member such that the length of the actuator changes with vertIcal movement of the second boom about the hinge means, and means including a pneumatic pressure regulator connecting the cylinder to a pressurized pneumatic source, the regulator pressurizing the actuator sufficiently to counterbalance the weight of the second boom and load.
Claim 7
Dependent Claim
239 words
A movable support for a hand-manipulated tool, such as a spray gun, permitting a wide range of movement in both a vertical and horizontal direction, comprising: a support member in the form of a first boom, a second boom forming an extension of said first boom, hinge means connecting the second boom to the support member, the hinge means providing vertical as well as horizontal movement of the second boom about the hinge means and including a first hinge unit secured to the support member and a second hinge unit secured to the second boom, the two hinge units being connected to each other and having mutually perpendicular hinge axes, means connecting the load to one end of the second boom, a pneumatic linear actuator including a cylinder and piston and pivotally secured at one end to the second boom adjacent the end secured to the second hinge unit, the other end of the linear actuator being pivotally connected to the common connection between the first and second hinge units, means connecting one end of the actuator to the second boom and the other end to the support member such that the length of the actuator changes with vertIcal movement of the second boom about the hinge means, and means including a pneumatic pressure regulator connecting the cylinder to a pressurized pneumatic source, the regulator pressurizing the actuator sufficiently to counterbalance the weight of the second boom and load.
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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) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |