US4336628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nozzle with pivoted wand
Assignee: Hoover Co
•
Filing: 1980-06-05
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Granted: 1982-06-29
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Expires: 2000-06-05
Abstract
Abstract The invention described provides a nozzle that includes a pivoted wand to permit relative movement in a vertical plane between the wand and nozzle during manipulation by the operator. The center for the pivot for the wand is located at floor level. This permits friction generated forces that are imparted to the nozzle to be imposed so as to prevent unbalanced moments being generated tending to tip the nozzle during its movement over a floor or carpeting.
Inventors
- 👤 David A. Bradshaw
- 👤 Joseph F. Oles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:00
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
71 words
A pivoting nozzle and wand arrangement including; (a) a nozzle body, (b) a bottom plate attached to the bottom of said nozzle body, (c) a floor centered pivot means adjacent said bottom plate extending into said nozzle body for freely pivoting said wand, (d) whereby friction induced forces generated by nozzle movement over a floor pass through said floor centered pivot means to produce substantially no unbalanced moment to the nozzle.
Claim 2
Dependent Claim
71 words
A pivoting nozzle and wand arrangement including; (a) a nozzle body, (b) a bottom plate attached to the bottom of said nozzle body, (c) a floor centered pivot means adjacent said bottom plate extending into said nozzle body for freely pivoting said wand, (d) whereby friction induced forces generated by nozzle movement over a floor pass through said floor centered pivot means to produce substantially no unbalanced moment to the nozzle.
Claim 3
Dependent Claim
92 words
A nozzle including; (a) a nozzle body, (b) a first pivot structure mounted with said nozzle body and non-rotatably fixed relative thereto and having its center located substantially at floor level; and (c) a wand and a second pivot structure non-rotatably fixed relative to said wand and having its center at substantially floor level, said wand being directly pivoted to said nozzle by pivoting cooperation of said first and second pivot structures, (d) whereby friction induced forces generated by nozzle movement over a floor produce substantially no unbalanced moment to the nozzle.
Claim 4
Dependent Claim
92 words
A nozzle including; (a) a nozzle body, (b) a first pivot structure mounted with said nozzle body and non-rotatably fixed relative thereto and having its center located substantially at floor level; and (c) a wand and a second pivot structure non-rotatably fixed relative to said wand and having its center at substantially floor level, said wand being directly pivoted to said nozzle by pivoting cooperation of said first and second pivot structures, (d) whereby friction induced forces generated by nozzle movement over a floor produce substantially no unbalanced moment to the nozzle.
Claim 5
Dependent Claim
126 words
A pivoting nozzle and wand arrangement including; (a) a nozzle body, (b) a bottom plate attached to the bottom of the nozzle body, (c) an arcuately shaped portion formed in said bottom plate, (d) at least one arcuately shaped portion formed in said nozzle body, (e) a wand piece disposed between said arcuately shaped portions and having surfaces cooperating with said nozzle body and bottom plate arcuate shaped portions, (f) said arcuately shaped portions forming conforming surfaces for pivotal reception of said wand piece, (g) said conforming arcuately shaped portions having as their center a pivot point, (h) said pivot point being located at floor level, (i) whereby friction induced forces generated by nozzle movement over a floor produce substantially no unbalanced moment to the nozzle.
Claim 6
Dependent Claim
126 words
A pivoting nozzle and wand arrangement including; (a) a nozzle body, (b) a bottom plate attached to the bottom of the nozzle body, (c) an arcuately shaped portion formed in said bottom plate, (d) at least one arcuately shaped portion formed in said nozzle body, (e) a wand piece disposed between said arcuately shaped portions and having surfaces cooperating with said nozzle body and bottom plate arcuate shaped portions, (f) said arcuately shaped portions forming conforming surfaces for pivotal reception of said wand piece, (g) said conforming arcuately shaped portions having as their center a pivot point, (h) said pivot point being located at floor level, (i) whereby friction induced forces generated by nozzle movement over a floor produce substantially no unbalanced moment to the nozzle.
Claim 7
Dependent Claim
30 words
The pivoting nozzle and wand arrangement of claim 3 wherein; (a) said arcuately shaped portion formed in said bottom plate is apertured to form a suction opening for said nozzle.
Claim 8
Dependent Claim
36 words
The pivoting nozzle and wand arrangement of claim 3 wherein; (a) a seal is provided for the end of said wand piece, (b) said seal riding on said arcuately shaped portion formed in said bottom plate.
Claim 9
Dependent Claim
22 words
The pivoting nozzle and wand arrangement of claim 3 wherein; (a) said wand piece is hollow for the passage of suction air.
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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) | 1985-06-28 | 1985-12-28 | 1986-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-28 | 1989-12-28 | 1990-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-28 | 1993-12-28 | 1994-06-29 | $7700.00 | Window Closed / Lapsed |