US3683448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nozzle height adjusting mechanism for a suction cleaner
Assignee: White Consolidated Industries Inc
•
Filing: 1970-06-03
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Granted: 1972-08-15
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Expires: 1990-06-03
Abstract
Abstract A nozzle height adjusting mechanism for adjusting the height of the suction inlet of an upright suction cleaner, with respect to the surface being cleaned, which includes a rotatably mounted axle in the cleaner body adjacent the suction inlet and wheels on the radially offset outer ends of the axle. An adjusting member having a cam surface engaging a radially offset central portion of the axle is movably mounted on the body for effecting limited rotation of the axle about its axis and consequently adjustment of the height of the suction inlet. The adjusting member is conveniently located on the upper front portion of the body for manipulation by a user. The height adjusting mechanism also includes indexing means which facilitates rapid movement of the adjusting member to and releasable retention thereof in a selected one of a plurality of its adjusted positions.
Inventors
- 👤 Robert C Lagerstrom
- 👤 Willis E Berry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:47
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/34
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
243 words
An adjusting mechanism for adjusting the height of the suction inlet of an upright suction cleaner with respect to a surface to be cleaned, said cleaner including a cleaner body having front and rear ends and a top wall having an opening therein adjacent said front end, and said suction inlet being located in the underside of the cleaner body adjacent the front end thereof, said adjusting mechanism comprising an axle adapted to be rotatably mounted on the cleaner body adjacent the suction inlet and having a support portion and an adjusting portion having an offset section, said support portion being radially offset from the axis of rotation of said axle and having means mounted thereon adapted to engage the surface to be cleaned, and an adjusting member adapted to extend through said opening and including a portion adapted to be disposed above said top wall for manipulation by a user, said adjusting member being adapted to be movably mounted on the cleaner body and having a cam surface thereon adapted to be positioned closely adjacent the underside of said top wall and directly engaging the offset section of said axle, whereby movement of said adjusting member in opposite directions causes limited rotation of said axle and raising or lowering of said surface engaging means with respect to the underside of the cleaner body to thereby effect adjustment of the height of the suction inlet with respect to the surface to be cleaned.
Claim 2
Dependent Claim
243 words
An adjusting mechanism for adjusting the height of the suction inlet of an upright suction cleaner with respect to a surface to be cleaned, said cleaner including a cleaner body having front and rear ends and a top wall having an opening therein adjacent said front end, and said suction inlet being located in the underside of the cleaner body adjacent the front end thereof, said adjusting mechanism comprising an axle adapted to be rotatably mounted on the cleaner body adjacent the suction inlet and having a support portion and an adjusting portion having an offset section, said support portion being radially offset from the axis of rotation of said axle and having means mounted thereon adapted to engage the surface to be cleaned, and an adjusting member adapted to extend through said opening and including a portion adapted to be disposed above said top wall for manipulation by a user, said adjusting member being adapted to be movably mounted on the cleaner body and having a cam surface thereon adapted to be positioned closely adjacent the underside of said top wall and directly engaging the offset section of said axle, whereby movement of said adjusting member in opposite directions causes limited rotation of said axle and raising or lowering of said surface engaging means with respect to the underside of the cleaner body to thereby effect adjustment of the height of the suction inlet with respect to the surface to be cleaned.
Claim 3
Dependent Claim
33 words
The adjusting mechanism of claim 1, further characterized in that said offset section is located centrally of said axle and is generally V-shaped with the apex of the V engaging said cam surface.
Claim 4
Dependent Claim
67 words
The adjusting mechanism of claim 1, further characterized in that said adjusting member comprises a slide adapted to be shiftably mounted on the cleaner body and having a body portion, the portion of said adjusting member that is disposed above the top wall of said cleaner body comprises a handle portion on said slide body portion, and said cam surface is also provided on said body portion.
Claim 5
Dependent Claim
49 words
The adjusting mechanism of claim 3, further characterized in that said slide body portion is elongated and is adapted to be mounted for longitudinal movement on the cleaner body, and said cam surface comprises an elongated rib of varying thickness on the slide body portion and extending lengthwise thereof.
Claim 6
Dependent Claim
60 words
The adjusting mechanism of claim 4, further characterized in that indexing means is provided for releasably retaining said slide in a selected one of a plurality of longitudinally adjusted positions, said indexing means comprising a plurality of spaced recesses in said slide body portion and detent means carried by said cleaner body and biased toward and extendable into said recesses.
Claim 7
Dependent Claim
38 words
The adjusting mechanism of claim 5, further characterized in that said detent means comprises a clip having a resilient arm extending toward and movable into and out of said recesses upon movement of said slide in opposite directions.
Claim 8
Dependent Claim
40 words
The adjusting mechanism of claim 1, further characterized in that said adjusting member comprises a knob adapted to be rotatably mounted on said cleaner body, and said cam surface is provided on said knob and is of uniformly varying radius.
Claim 9
Dependent Claim
34 words
The adjusting mechanism of claim 7, further characterized in that said knob includes an axially extending, generally cylindrical portion, and said cam surface is formed around the outer periphery of said generally cylindrical portion.
Claim 10
Dependent Claim
58 words
The adjusting mechanism of claim 8, further characterized in that indexing means is provided for releasably retaining said knob in a selected one of a plurality of rotated positions, said indexing means comprising a plurality of circumferentially spaced rEcesses in said cam surface, said recesses coacting with said axle to releasably retain said knob in said rotated positions.
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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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |