Patent US3571884A successfully refreshed from Google Patents.
US3571884A
Expired / Lapsed
US
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Sheave flange opening device
Assignee: Reliance Electric Co
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Filing: 1968-10-03
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Granted: 1971-03-23
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Expires: 1988-10-03
Abstract
Abstract A device for opening the flanges of a variable pitch sheave having two axially movable flanges urged toward one another by a spring means. The device, consisting of a screw-operated mechanism, may be mounted on and removed from the sheave, and is operable to apply pressure to the opposing flanges in the direction to open the flanges and to hold the flanges in open position while the sheave is being assembled on a shaft and a belt is being mounted and positioned on the sheave. After the installation of the sheave has been completed, the device is removed from the sheave, which thereafter operates in the normal manner.
Inventors
- 👤 Jackson Chung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:44
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/32; F16H55/52; F16H55/56; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53613; Y10T29/53622; Y10T29/53796; Y10T29/53848; Y10T29/53857; Y10T29/53861
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
132 words
A device for opening the flanges of a sheave having two axially movable flanges, a sleeve for each of said flanges attached to the respective flange and extending in the same direction therefrom in concentric relation, and a spring urging said flanges toward one another: said device comprising a crossmember for mounting at the end of said sheave adjacent said sleeves, a plurality of spaced members connected at one end to said crossmember and having means at the other end for connection to the adjacent sheave flange, and a means engaging said crossmember at one end and having means at the other end for engaging the sleeve of the other sheave flange to apply a force to said last-mentioned sleeve for opening said flanges and retaining said flanges in an open position.
Claim 2
Independent Claim
132 words
A device for opening the flanges of a sheave having two axially movable flanges, a sleeve for each of said flanges attached to the respective flange and extending in the same direction therefrom in concentric relation, and a spring urging said flanges toward one another: said device comprising a crossmember for mounting at the end of said sheave adjacent said sleeves, a plurality of spaced members connected at one end to said crossmember and having means at the other end for connection to the adjacent sheave flange, and a means engaging said crossmember at one end and having means at the other end for engaging the sleeve of the other sheave flange to apply a force to said last-mentioned sleeve for opening said flanges and retaining said flanges in an open position.
Claim 3
Dependent Claim
39 words
A device for opening flanges of a sheave as defined in claim 1 in which said plurality of spaced means connecting the member to the adjacent sheave flange includes two bolts extending from said crossmember to said adjacent flange.
Claim 4
Dependent Claim
38 words
A device for opening flanges of a sheave as defined in claim 1 in which said crossmember consists of a bar extending transversely at the end of the sheave on the side on which said sleeves are positioned.
Claim 5
Dependent Claim
49 words
A device for opening flanges of a sheave as defined in claim 1 in which said means for applying a force to the sleeve of said other flange consists of a screw extending through said crossmember and a pressure applying member seating on the adjacent end of said sheave.
Claim 6
Dependent Claim
49 words
A device for opening flanges of a sheave as defined in claim 2 in which said means for applying a force to the sleeve of said other flange consists of a screw extending through said crossmember and a pressure applying member seating on the adjacent end of said sheave.
Claim 7
Dependent Claim
48 words
A device for opening flanges of a sheave a defined in claim 3 in which said means for applying a force to the sleeve of said other flange consists of a screw extending through said crossmember and pressure applying member seating on the adjacent end of said sheave.
Claim 8
Dependent Claim
38 words
A device for opening flanges of a sheave as defined in claim 2 in which said crossmember consists of a bar extending transversely at the end of the sheave on the side on which said sleeves are positioned.
Claim 9
Dependent Claim
25 words
A device for opening flanges of a sheave as defined in claim 5 in which said screw extends through a threaded hole in said crossmeMber.
Claim 10
Dependent Claim
36 words
A device for opening flanges of a sheave as defined in claim 5 in which said screw extends through a hole in said crossmember and through a nut disposed on the inner side of said crossmember.
Claim 11
Dependent Claim
36 words
A device for opening flanges of a sheave as defined in claim 6 in which said screw extends through a hole in said crossmember and through a nut disposed on the inner side of said crossmember.
Claim 12
Dependent Claim
25 words
A device for opening flanges of a sheave as defined in claim 4 in which said pressure applying member consists of a transversely disposed plated.
Claim 13
Dependent Claim
25 words
A device for opening flanges of a sheave as defined in claim 6 in which said pressure applying member consists of a transversely disposed bar.
References Cited (Backward Citations)
US3099875A
Cited
US3368266A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |