US3787142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fan guard
Assignee: Individual
•
Filing: 1972-05-01
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Granted: 1974-01-22
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Expires: 1992-05-01
Abstract
Abstract This disclosure relates to fan guard which includes a pair of guard halves each including a plurality of peripheral wires circumscribing progressively reduced areas from a first peripheral wire toward a most remote and smaller second peripheral wire with at least an additional peripheral wire therebetween, the guard halves being disposed with the first peripheral wires adjacent each other and means in the form of hooks pivotally connected to the additional peripheral wire of a first of the pair of guard halves and hooked upon the additional peripheral wire of a second of the pair of guard halves for maintaining the same in assembled relationship. Each hook includes an eye and a hooking nose at opposite ends of a spanning portion and the spanning portions are disposed inboard of, in contact with, and in spanning relationship to the first peripheral wires of both the first and second guard halves.
Inventors
- 👤 R Dupke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:29
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/70; F04D29/701; F04D29/703; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/219
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
156 words
A fan guard comprising a pair of guard halves each including a plurality of peripheral wires circumscribing progressibely reduced areas from a first peripheral wire toward a most remote and smaller second peripheral wire with at least an additional peripheral wire therebetween, said guard halves being disposed with said first peripheral wires adjacent each other while said second peripheral wires are remote from each other, and means for removably securing said guard halves to each other, said securing means being a plurality of hooks each having first and second ends and a spanning portion therebetween, said first ends being pivotally connected to the additional peripheral wire of a first of said pair of guard halves, said second ends being hooked upon the additional peripheral wire of a second of said pair of guard halves, and said spanning portions are disposed inboard of and span said first peripheral wires of both said first and second guard halves.
Claim 2
Dependent Claim
156 words
A fan guard comprising a pair of guard halves each including a plurality of peripheral wires circumscribing progressibely reduced areas from a first peripheral wire toward a most remote and smaller second peripheral wire with at least an additional peripheral wire therebetween, said guard halves being disposed with said first peripheral wires adjacent each other while said second peripheral wires are remote from each other, and means for removably securing said guard halves to each other, said securing means being a plurality of hooks each having first and second ends and a spanning portion therebetween, said first ends being pivotally connected to the additional peripheral wire of a first of said pair of guard halves, said second ends being hooked upon the additional peripheral wire of a second of said pair of guard halves, and said spanning portions are disposed inboard of and span said first peripheral wires of both said first and second guard halves.
Claim 3
Dependent Claim
21 words
The fan guard as defined in claim 1 wherein said spanning portions contact inboard surface portions of said first peripheral wires.
Claim 4
Dependent Claim
40 words
The fan guard as defined in claim 1 including a further peripheral wire between said first and additional peripheral wires of said first guard half, and said spanning portions are likewise disposed inboard of and span said further peripheral wire.
Claim 5
Dependent Claim
40 words
The fan guard as defined in claim 1 wherein the axial distance between said first and additional wire of said first guard half is greater than the axial distance between said first and additional wires of said second guard half.
Claim 6
Dependent Claim
28 words
The fan guard as defined in claim 1 wherein said first ends are eyes and said second ends are radially inwardly opening noses in the second positions thereof.
Claim 7
Dependent Claim
34 words
The fan guard as defined in claim 1 wherein the diameter of the additional wire of said first guard half is less than the diameter of the additional wire of said second guard half.
Claim 8
Dependent Claim
47 words
The fan guard as defined in claim 1 wherein said first ends are eyes and said second ends are radially inwardly opening noses in the second positions thereof, and each hook includes two aligned eyes, noses and spanning portions constructed from a single piece of bent wire.
Claim 9
Dependent Claim
57 words
The fan guard as defined in claim 1 wherein said first ends are eyes and said second ends are radially inwardly opening noses in the second positions thereof, and each hook includes two aligned eyes, noses and spanning portions constructed from a single piece of bent wire with ends of the bent wire located at said eyes.
Claim 10
Dependent Claim
40 words
The fan guard as defined in claim 3 wherein the axial distance between said first and additional wire of said first guard half is greater than the axial distance between said first and additional wires of said second guard half.
Claim 11
Dependent Claim
57 words
The fan guard as defined in claim 3 wherein said first ends are eyes and said second ends are radially inwardly opening noses in the second positions thereof, and each hook includes two aligned eyes, noses and spanning portions constructed from a single piece of bent wire with ends of the bent wire located at said eyes.
Claim 12
Dependent Claim
57 words
The fan guard as defined in claim 4 wherein said first ends are eyes and said second ends are radially inwardly opening noses in the second positions thereof, and each hook includes two aligned eyes, noses and spanning portions constructed from a single piece of bent wire with ends of the bent wire located at said eyes.
Claim 13
Dependent Claim
57 words
The fan guard as defined in claim 9 wherein said first ends are eyes and said second ends are radially inwardly opening noses in the second positions thereof, and each hook includes two aligned eyes, noses and spanning portions constructed from a single piece of bent wire with ends of the bent wire located at said eyes.
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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |