US4616378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for mounting floor pickup nozzle to dolly for vacuum cleaner
Assignee: SHOP-VAC Corp A CORP OF NJ
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Filing: 1985-04-24
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Granted: 1986-10-14
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Expires: 2005-04-24
Abstract
Abstract A mounting means secures a floor nozzle to the front of a wheeled dolly base which supports a vacuum cleaner that is connected to the outlet of the nozzle by a flexible hose. The mounting means includes a plate having struts extending therefrom to opposite ends of the nozzle. A rearward extension of the nozzle, disposed midway between the nozzle ends, is connected directly to the plate by a manually operable height adjusting means. An upwardly offset rearward facing ear on the plate is received by a slot that is centered at the front of the dolly base. Two of the swivel-type wheel units that support the base are each provided with a vertical pivot shaft that extends upwardly into and is frictionally held in a wheel well on the base. Before entering the wheel wells, the pivot shafts pass through apertures in the plate thereby fixing the nozzle against all forces in a horizontal plane.
Inventors
- 👤 Robert C. Berfield
- 👤 Robert Crevling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:33
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L11/00; A47L11/29; A47L11/30; A47L5/00; A47L5/12; A47L5/22; A47L5/36; A47L5/365; A47L9/009; A47L9/06
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
152 words
Mobile vacuum cleaner apparatus including: a vacuum cleaner, a dolly supporting said cleaner, a floor nozzle unit, mounting means securing said nozzle unit to said dolly in operative position at the front thereof, and conduit means operatively connecting an outlet of said nozzle unit to an inlet of said cleaner; said dolly including a horizontal base having well means at the front thereof, floor engaging swivel-type wheel means having a vertical axis portion removably held in said well means, handle means extending from said base at the rear thereof, and floor engaging additional wheel means connected to said base at the rear thereof; said nozzle unit including an elongated slot-like inlet facing the floor, said outlet being relatively small compared to said slot-like inlet; and said mounting means including a plate extending forward of said base and including aperture means through which said vertical axis portion extends before entering said well means.
Claim 2
Dependent Claim
152 words
Mobile vacuum cleaner apparatus including: a vacuum cleaner, a dolly supporting said cleaner, a floor nozzle unit, mounting means securing said nozzle unit to said dolly in operative position at the front thereof, and conduit means operatively connecting an outlet of said nozzle unit to an inlet of said cleaner; said dolly including a horizontal base having well means at the front thereof, floor engaging swivel-type wheel means having a vertical axis portion removably held in said well means, handle means extending from said base at the rear thereof, and floor engaging additional wheel means connected to said base at the rear thereof; said nozzle unit including an elongated slot-like inlet facing the floor, said outlet being relatively small compared to said slot-like inlet; and said mounting means including a plate extending forward of said base and including aperture means through which said vertical axis portion extends before entering said well means.
Claim 3
Dependent Claim
58 words
Mobile vacuum cleaner apparatus as set forth in claim 1 in which the nozzle unit includes an elongated bottom main section that is provided with a short rearward extension at the center thereof secured directly to said plate; said mounting means including first and second struts extending rearward from opposite ends of said main section to said plate.
Claim 4
Dependent Claim
22 words
Mobile vacuum cleaner apparatus as set forth in claim 2 in which the struts diverge as they extend forward from said plate.
Claim 5
Dependent Claim
52 words
Mobile vacuum cleaner apparatus as set forth in claim 2 in which the plate is provided with an upwardly offset ear that is disposed within an aperture of said base at the front thereof, said aperture being disposed midway between horizontally spaced first and second wheel wells that constitute said well means.
Claim 6
Dependent Claim
26 words
Mobile vacuum cleaner apparatus as set forth in claim 4 in which the ear extends rearward and enters the aperture from in front of the base.
Claim 7
Dependent Claim
22 words
Mobile vacuum cleaner apparatus as set forth in claim 5 in which the struts diverge as they extend forward from said plate.
Claim 8
Dependent Claim
33 words
Mobile vacuum cleaner apparatus as set forth in claim 6 also including adjustable fastening means securing said rearward extension to said plate for adjusting vertical spacing between the latter and said rearward extension.
Claim 9
Dependent Claim
44 words
Mobile vacuum cleaner apparatus as set forth in claim 7 in which each of said struts is provided with a flattened end that is received by a complementary slot in said plate to form generally horizontally pivot connections between said plate and said struts.
Claim 10
Dependent Claim
26 words
Mobile vacuum cleaner apparatus as set forth in claim 8 in which said flattened ends are forwardly offset and enter said slots from below said plate.
Claim 11
Dependent Claim
33 words
Mobile vacuum cleaner apparatus as set forth in claim 9 in which the plate is provided with an upturned edge at the rear thereof, said upturned edge engaging the bottom of the base.
Claim 12
Dependent Claim
33 words
Mobile vacuum cleaner apparatus as set forth in claim 2 also including adjustable fastening means securing said rearward extension to said plate for adjusting vertical spacing between the latter and said rearward extension.
Claim 13
Dependent Claim
44 words
Mobile vacuum cleaner apparatus as set forth in claim 11 in which each of said struts is provided with a flattened end that is received by a complementary slot in said plate to form generally horizontally pivot connections between said plate and said struts.
Claim 14
Dependent Claim
26 words
Mobile vacuum cleaner apparatus as set forth in claim 12 in which said flattened ends are forwardly offset and enter said slots from below said plate.
Claim 15
Dependent Claim
40 words
Mobile vacuum cleaner apparatus as set forth in claim 2 in which there are generally horizontal pivot connections between the struts and the plate, and generally vertical pivot connections between the struts and the main section of said nozzle unit.
Claim 16
Dependent Claim
52 words
Mobile vacuum cleaner apparatus as set forth in claim 1 in which the plate is provided with an upwardly offset ear that is disposed within an aperture of said base at the front thereof, said aperture being disposed midway between horizontally spaced first and second wheel wells that constitute said well means.
Claim 17
Dependent Claim
25 words
Mobile vacuum cleaner apparatus as set forth in claim 15 which the ear extends rearward and enters the aperture from in front of the base.
Claim 18
Dependent Claim
33 words
Mobile vacuum cleaner apparatus as set forth in claim 1 in which the plate is provided with an upturned edge at the rear thereof, said upturned edge engaging the bottom of the base.
Claim 19
Dependent Claim
85 words
Mobile vacuum cleaner apparatus including: a vacuum cleaner, a dolly supporting said cleaner, a floor nozzle unit, mounting means securing said nozzle unit to said dolly in operative position at the front thereof, and conduit means operatively connecting an outlet of said nozzle unit to an inlet of said cleaner; said mounting means including a plurality of frictionally held stems that extend perpendicular to the direction of forces which, under normal usage of the apparatus, are transferred from the floor nozzle unit to the dolly.
Claim 20
Dependent Claim
85 words
Mobile vacuum cleaner apparatus including: a vacuum cleaner, a dolly supporting said cleaner, a floor nozzle unit, mounting means securing said nozzle unit to said dolly in operative position at the front thereof, and conduit means operatively connecting an outlet of said nozzle unit to an inlet of said cleaner; said mounting means including a plurality of frictionally held stems that extend perpendicular to the direction of forces which, under normal usage of the apparatus, are transferred from the floor nozzle unit to the dolly.
Claim 21
Dependent Claim
33 words
Mobile vacuum dolly apparatus as set forth in claim 18 in which all forces from raising the floor nozzle unit are transferred to the dolly without placing loads on the frictionally held stems.
Claim 22
Dependent Claim
30 words
Mobile vacuum cleaner apparatus as set forth in claim 18 in which each of the frictionally held stems constitutes part of a caster wheel assembly which partially supports the dolly.
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) | 1989-10-13 | 1990-04-14 | 1990-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-13 | 1994-04-14 | 1994-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-13 | 1998-04-14 | 1998-10-14 | $7700.00 | Window Closed / Lapsed |