US4492372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amusement helicopter
Assignee: Rawson Control Systems Inc
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Filing: 1982-02-11
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Granted: 1985-01-08
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Expires: 2002-02-11
Abstract
Abstract Helicopter intended for use as a toy and raisable on a four-bar linkage by a hydraulic cylinder through a hydraulic circuit. An electrical circuit provides for alternately flashing flight lights, pulsating front gun lights, and for providing through a speaker a chopper sound and a phasor gun sound. The hydraulic circuit includes a novel single spool for regulating flow through a valve between a combined motor pump tank to a cylinder at a fast speed up and slow speed down. The valve is mechanically linked to the joy stick. The four-bar linkage includes a safety bar which overrides the joy stick in the event that an individual or an object is positioned under the linkage in an elevated condition. The hydraulic circuit is provided with a joy stick stop limit within the joy stick throttle structure, a valve control stop link, a safety bar limit, and the inherent four-bar linkage limit, all of these limits acting to keep oil in the cylinder and provide for safety of operation. All of the electromechanical circuitry is positioned in one box which mounts within the enclosure providing for accessible and ease of replacement servicing as required.
Inventors
- 👤 Allan L. Lorence
- 👤 Thomas L. Maring
- 👤 James L. Rawson, deceased
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:32
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/12; G09B9/14; A; A63; A63G; A63G31/00; A63G31/16; G09B9/46
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
260 words
An amusement aircraft simulator comprising: a. frame support means including a raisable fourbar linkage having one end rotatably mounted about a shaft secured on said frome and an aircraft body supported on an other end of said linkage; b. hydraulic means including a motor-driven hydraulic pump, a reservoir, a geometrically configured valve means connected thereto connected in a hydraulic circuit, and a hydraulic cylinder connected between said frame and a midpoint of said fourbar linkage; c. electronic control means for controlling said hydraulic means and supported on said frame; d. stop pin means for limiting the distance of travel of said fourbar linkage; and connected to said valve means; e. safety bar means over a portion of said fourbar linkage, said safety bar means including pivoting structure connected at a rearward end to said fourbar linkage and having slotted key means at an other end, a first barbell crank connected to a forward end of said fourbar linkage and said slotted key means, and a joy stick linkage connected on opposing sides of said first barbell crank, and a second barbell crank connected to a rearward end of said fourbar linkage; f. joy stick means positioned at said other end of said fourbar linkage and including linkage means connected to said valve means; and, g. said aricraft body mounted to said other end of said fourbar linkage housing said joy stick means therein, whereby manual actuation of said joy stick means actuates said hydraulic means to further actuate said fourbar linkage to move said aircraft body to simulate free flight.
Claim 2
Dependent Claim
260 words
An amusement aircraft simulator comprising: a. frame support means including a raisable fourbar linkage having one end rotatably mounted about a shaft secured on said frome and an aircraft body supported on an other end of said linkage; b. hydraulic means including a motor-driven hydraulic pump, a reservoir, a geometrically configured valve means connected thereto connected in a hydraulic circuit, and a hydraulic cylinder connected between said frame and a midpoint of said fourbar linkage; c. electronic control means for controlling said hydraulic means and supported on said frame; d. stop pin means for limiting the distance of travel of said fourbar linkage; and connected to said valve means; e. safety bar means over a portion of said fourbar linkage, said safety bar means including pivoting structure connected at a rearward end to said fourbar linkage and having slotted key means at an other end, a first barbell crank connected to a forward end of said fourbar linkage and said slotted key means, and a joy stick linkage connected on opposing sides of said first barbell crank, and a second barbell crank connected to a rearward end of said fourbar linkage; f. joy stick means positioned at said other end of said fourbar linkage and including linkage means connected to said valve means; and, g. said aricraft body mounted to said other end of said fourbar linkage housing said joy stick means therein, whereby manual actuation of said joy stick means actuates said hydraulic means to further actuate said fourbar linkage to move said aircraft body to simulate free flight.
Claim 3
Dependent Claim
18 words
A simulator of claim 1 wherein said slotted key means provides a stop limit for safety of flight.
Claim 4
Dependent Claim
21 words
A simulator of claim 1 wherein said valve means includes a round spool having a plurality of wide and narrow orifices.
Claim 5
Dependent Claim
26 words
A simulator of claim 3 wherein said wide and narrow orifices are respectively for a fast downward and a slow upward movement of the aircraft body.
Claim 6
Dependent Claim
16 words
A simulator of claim 1 wherein said joy stick linkage includes adjustable means at both ends.
Claim 7
Dependent Claim
46 words
A simulator of claim 1 wherein said electronic control means includes means for generating sounds of flight, means for generating sounds of weapon firing, means for flashing flight lights, means for flashing weaponry lights, and speaker means for outputting said generated sounds in said aircraft body.
Claim 8
Dependent Claim
11 words
A simulator of claim 1 wherein said aircraft is a helicopter.
Claim 9
Dependent Claim
25 words
Aircraft of claim 1 including triangular side cover means rotatable about said linkage means for protecting said linkage means from insertion of any object therein.
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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) | 1988-01-08 | 1988-07-09 | 1989-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-08 | 1992-07-09 | 1993-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-08 | 1996-07-09 | 1997-01-08 | $7700.00 | Window Closed / Lapsed |