Patent US3867058A successfully refreshed from Google Patents.
US3867058A
Expired / Lapsed
US
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Motion imparting apparatus
Assignee: Individual
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Filing: 1972-12-01
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Granted: 1975-02-18
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Expires: 1992-12-01
Abstract
Abstract A motion imparting apparatus having a member pivotally mounted in a fluid stream. An airfoil is pivotally connected to the member for cooperating with the fluid stream and being moved thereby to pivot the member. The airfoil stalls at extreme end positions of the swing of the member, and changes positions relative to the member to swing back-and-forth across the fluid stream. The apparatus may be mounted on a fan, and the like, for deflecting air dispensed thereby, or the member may be connected to and actuate in a known manner a suitable mechanism. The frequency of oscillation of the airfoil is varied by adjusting the angle of the pivot axis of the member in a direction parallel to the direction of flow of the fluid stream.
Inventors
- 👤 Ray V Hendrickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:23
CPC Classifications
F; F04; F04D; F04D25/00; F04D25/02; F04D25/08; F04D25/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
145 words
Apparatus for imparting motion, comprising a pivotally mounted member arranged in a fluid stream, the member including: a. an arm having a pair of spaced ends, and pivotally mounted at a one of The ends; b. an airfoil pivotally connected to the other of the ends, the arm and airfoil arranged for pivoting about substantially vertical axes between two extreme end positions and the airfoil arranged for swinging the other of the ends, and the airfoil being arranged for changing positions relative to the arm and the fluid stream as the arm approaches each end position for changing the direction of swinging movement of the airfoil; and c. stop means for causing the other of the ends and the airfoil to engage one another and determine the angle of the airfoil relative to the arm and the fluid stream in each position of the airfoil.
Claim 2
Dependent Claim
145 words
Apparatus for imparting motion, comprising a pivotally mounted member arranged in a fluid stream, the member including: a. an arm having a pair of spaced ends, and pivotally mounted at a one of The ends; b. an airfoil pivotally connected to the other of the ends, the arm and airfoil arranged for pivoting about substantially vertical axes between two extreme end positions and the airfoil arranged for swinging the other of the ends, and the airfoil being arranged for changing positions relative to the arm and the fluid stream as the arm approaches each end position for changing the direction of swinging movement of the airfoil; and c. stop means for causing the other of the ends and the airfoil to engage one another and determine the angle of the airfoil relative to the arm and the fluid stream in each position of the airfoil.
Claim 3
Dependent Claim
52 words
A structure as defined in claim 1, wherein the arm is pivotally arranged centrally of the fluid stream for permitting the airfoil to deflect the fluid stream, and further including a vanae affixed to the arm and arranged substantially parallel to the airfoil for assisting the airfoil in deflecting the fluid stream.
Claim 4
Dependent Claim
12 words
A structure as defined in claim 1, wherein the airfoil is symmetrical.
Claim 5
Dependent Claim
33 words
A structure as defined in claim 1, further including a fan having a frame, and means for vertically pivotally mounting the one end of the arm on the frame centrally of the fan.
Claim 6
Dependent Claim
63 words
A structure as defined in claim 4, wherein the mounting means includes a pair of brackets affixed to the frame in a common vertical plane, each bracket provided with an opening, and the member includes a rod arranged in the openings and the arm is a pair of codirectionally extending arms mounted on the airfoil and connected to the rod between the brackets.
Claim 7
Dependent Claim
57 words
A structure as defined in claim 5, wherein one of the brackets has a plurality of openings arranged along a line extending away from the fan for receiving the rod and permitting varying of the angle of a longitudinal axis of the rod with respect to the fan for changing the frequency of oscillation of the airfoil.
Claim 8
Dependent Claim
26 words
A structure as defined in claim 6, further including a vane mounted between the arms, the airfoil and vane being arranged for deflecting the fluid stream.
Claim 9
Dependent Claim
26 words
A structure as defined in claim 5, further including a vane mounted between the arms, the airfoil and vane being arranged for deflecting the fluid stream.
Claim 10
Dependent Claim
24 words
A structure as defined in claim 4, wherein the mounting means includes means for varying the frequency of oscillation of the member pivoting means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |