Patent US4726573A successfully refreshed from Google Patents.
Patent US3709531A successfully refreshed from Google Patents.
US3709531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft and hub assembly and improved clip fastener therefor
Assignee: Lau Inc
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Filing: 1971-04-08
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Granted: 1973-01-09
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Expires: 1991-04-08
Abstract
Abstract The fan hub is attached to a drive shaft by means of a generally C-shaped clip member which has an arched or curved leg positioned in a slot on the hub between the hub and a flat formed on the drive shaft. The clip member is first positioned on the shaft and then the hub is slid into place flattening the curvature of the leg of the clip member and driving a pair of barbs into frictional engagement with the shaft providing a torque and thrust transmitting connection. An upper portion of the clip member drops into a detent opening formed on the hub for retaining the clip member, hub, and shaft in assembled relation.
Inventors
- 👤 R Beehler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:53
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; F16D1/10; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7047; Y10T403/7061; Y10T403/7098; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20732; Y10T74/20834; Y10T74/2084
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
140 words
A shaft and hub assembly in combination with a fastener for transmitting torque and thrust comprising a drive shaft, means on said shaft defining a flat along a longitudinal surface thereof, a hub adapted to be received on said shaft having a longitudinal slot positioned radially opposite said shaft flat and defining with said flat a longitudinal clearance space, a clip-like spring fastener formed of essentially flat stock material having an extended longitudinally curved leg with the concave side of the curvature thereof facing said flat and adapted to be received in said clearance space accompanied by a flattening movement of said leg, means on said leg surface adjacent said flat defining at least one protuberance which is engageable with said flat for preventing longitudinal movement of said fastener on said shaft, and means retaining said fastener on said hub.
Claim 2
Dependent Claim
140 words
A shaft and hub assembly in combination with a fastener for transmitting torque and thrust comprising a drive shaft, means on said shaft defining a flat along a longitudinal surface thereof, a hub adapted to be received on said shaft having a longitudinal slot positioned radially opposite said shaft flat and defining with said flat a longitudinal clearance space, a clip-like spring fastener formed of essentially flat stock material having an extended longitudinally curved leg with the concave side of the curvature thereof facing said flat and adapted to be received in said clearance space accompanied by a flattening movement of said leg, means on said leg surface adjacent said flat defining at least one protuberance which is engageable with said flat for preventing longitudinal movement of said fastener on said shaft, and means retaining said fastener on said hub.
Claim 3
Dependent Claim
45 words
The assembly of claim 1 in which said slot is formed with a transverse width less than the corresponding width of said flat defining a pair of longitudinally extending hub edges which directly engage said flat for resisting rotation of said hub on said shaft.
Claim 4
Dependent Claim
31 words
The assembly of claim 1 in which said fastener is formed with a curved outer clip portion longitudinally overlying said leg and engageable with said hub at an outer surface thereof.
Claim 5
Dependent Claim
17 words
The assembly of claim 3 further comprising detent means on said hub engageably by said clip portion.
Claim 6
Dependent Claim
129 words
A shaft and hub assembly in combinatioN with a fastener for transmitting torque and thrust comprising a drive shaft, means on said shaft defining a flat along a longitudinal surface thereof, a hub adapted to be received on said shaft having a longitudinal slot positioned radially opposite said shaft flat and defining with said flat a longitudinal clearance space, a clip-like spring fastener having an extended longitudinally curved leg adapted to be received in said clearance space accompanied by a flattening movement of said leg, means on said leg outer surface defining a pair of longitudinally spaced said barbs which have oppositely directed shaft engaging portions engageable with said shaft for preventing longitudinal movement of said fastener on said shaft, and means for retaining said fastener on said hub.
Claim 7
Dependent Claim
129 words
A shaft and hub assembly in combinatioN with a fastener for transmitting torque and thrust comprising a drive shaft, means on said shaft defining a flat along a longitudinal surface thereof, a hub adapted to be received on said shaft having a longitudinal slot positioned radially opposite said shaft flat and defining with said flat a longitudinal clearance space, a clip-like spring fastener having an extended longitudinally curved leg adapted to be received in said clearance space accompanied by a flattening movement of said leg, means on said leg outer surface defining a pair of longitudinally spaced said barbs which have oppositely directed shaft engaging portions engageable with said shaft for preventing longitudinal movement of said fastener on said shaft, and means for retaining said fastener on said hub.
Claim 8
Dependent Claim
103 words
A unitary spring steel clip fastener for connecting a hub having a longitudinal internal slot to a shaft having a flat positionable opposite such slot, comprising a longitudinally extending curved leg portion adapted to be received by flattening in such slot in frictional engagement with the shaft at such flat, a partially encircling outer clip portion adapted to be received in a detent or recess on such hub, the curvature of said leg portion facing outwardly from said clip portion and toward the flat, and means in said leg portion defining a pair of oppositely facing barbs for frictional engagement with such flat.
Claim 9
Dependent Claim
103 words
A unitary spring steel clip fastener for connecting a hub having a longitudinal internal slot to a shaft having a flat positionable opposite such slot, comprising a longitudinally extending curved leg portion adapted to be received by flattening in such slot in frictional engagement with the shaft at such flat, a partially encircling outer clip portion adapted to be received in a detent or recess on such hub, the curvature of said leg portion facing outwardly from said clip portion and toward the flat, and means in said leg portion defining a pair of oppositely facing barbs for frictional engagement with such flat.
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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |