US4748714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaner with belt shifting
Assignee: Hoover Co
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Filing: 1986-11-06
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Granted: 1988-06-07
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Expires: 2006-11-06
Abstract
Abstract The invention comprehends a belt shifting arrangement for an upright cleaner in which belt shifting to an intermediate idler pulley is occasioned by either handle movement or pedal actuation. Either of these movements functions to cam the belt onto the idler pulley or to permit its movement back to an agitator drive pulley.
Inventors
- 👤 Donald B. Tschudy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:21
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/30; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20207; Y10T74/20213; Y10T74/2022
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
109 words
In an upright vacuum cleaner having a handle and an operator contactable means, the combination including; (a) a belt for driving an agitator of said upright cleaner, (b) a drive pulley and an idler pulley, (c) a shifting mechanism for engaging said belt and moving it from said drive pulley to said idler pulley, (d) a first means for engaging said shifting mechanism, actuated by said handle, for moving said shifting mechanism to place said belt on said idler pulley, and (e) a second means for engaging said shifting mechanism, actuated by said operator contactable means, for moving said shifting mechanism to place said belt on said idler pulley.
Claim 2
Dependent Claim
109 words
In an upright vacuum cleaner having a handle and an operator contactable means, the combination including; (a) a belt for driving an agitator of said upright cleaner, (b) a drive pulley and an idler pulley, (c) a shifting mechanism for engaging said belt and moving it from said drive pulley to said idler pulley, (d) a first means for engaging said shifting mechanism, actuated by said handle, for moving said shifting mechanism to place said belt on said idler pulley, and (e) a second means for engaging said shifting mechanism, actuated by said operator contactable means, for moving said shifting mechanism to place said belt on said idler pulley.
Claim 3
Dependent Claim
28 words
An upright vacuum cleaner as set out in claim 1 wherein; (a) said first and second means for engaging engage said shifting mechanism at spaced locations on it.
Claim 4
Dependent Claim
26 words
An upright vacuum cleaner as set out in claim 1 wherein; (a) said operator contactable means comprises a pedal located at rear portions of said cleaner.
Claim 5
Dependent Claim
27 words
An upright vacuum cleaner as set out in claim 3 wherein; (a) said pedal includes a push-push mechanism for always returning said pedal to its disengaged position.
Claim 6
Dependent Claim
26 words
An upright vacuum cleaner as set out in claim 4 wherein; (a) said push-push mechanism includes a pivoting pawl and a means for camming said pawl.
Claim 7
Dependent Claim
75 words
An upright vacuum cleaner as set out in claim 1 wherein; (a) a belt shifting rod is pivotally mounted with said vacuum cleaner, (b) said belt shifting rod includes a portion extending in a front to rear direction in said vacuum cleaner, (c) said first and second means for engaging said shifting mechanism moveable to forcedly abut said portion for pivoting movement of said shifting rod to thereby place said belt on said idler pulley.
Claim 8
Dependent Claim
31 words
An upright vacuum cleaner as set out in claim 6 wherein; (a) said first and second means for alternating engaging said shifting mechanism including separate cams moveable into said forced abutment.
Claim 9
Dependent Claim
106 words
A vacuum cleaner having a belt shifting arrangement including; (a) an operator manipulated lever extending outwardly from and terminating closely adjacent a hood of said cleaner, (b) said lever being capable of operator manipulation in a fore and aft direction of said hood, (c) said lever means being attached to a means for camming said belt to provide said belt shifting, (d) said lever forming a pedal, (e) said pedal seated on an arcuate ramp for arcuate movement relative to said vacuum cleaner, (f) said arcuate ramp formed in a housing for said pedal, and (g) a cover having an arcuate ramp disposed above said housing.
Claim 10
Dependent Claim
106 words
A vacuum cleaner having a belt shifting arrangement including; (a) an operator manipulated lever extending outwardly from and terminating closely adjacent a hood of said cleaner, (b) said lever being capable of operator manipulation in a fore and aft direction of said hood, (c) said lever means being attached to a means for camming said belt to provide said belt shifting, (d) said lever forming a pedal, (e) said pedal seated on an arcuate ramp for arcuate movement relative to said vacuum cleaner, (f) said arcuate ramp formed in a housing for said pedal, and (g) a cover having an arcuate ramp disposed above said housing.
Claim 11
Dependent Claim
25 words
The vacuum cleaner having the belt shifting arrangement of claim 8 wherein; (a) said pedal includes arcuate tracks captured between said housing and said cover.
Claim 12
Dependent Claim
24 words
The vacuum cleaner having the belt shifting arrangement of claim 9 wherein; (a) said means for camming includes a cam formed on said pedal.
Claim 13
Dependent Claim
33 words
The vacuum cleaner having the belt shifting arrangement of claim 10 wherein; (a) said pedal is resiliently urged rearwardly, and (b) a push-push mechanism in at least one position opposes said resilient urging.
References Cited (Backward Citations)
AU155204A
Cited
US2250282A
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US2616119A
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US2637874A
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US2714220A
Cited
US2740982A
Cited
US4446594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-07 | 1991-12-07 | 1992-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-07 | 1995-12-07 | 1996-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-07 | 1999-12-07 | 2000-06-07 | $7700.00 | Window Closed / Lapsed |