US3930630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner support apparatus
Assignee: Nilfisk Inc
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Filing: 1974-08-05
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Granted: 1976-01-06
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Expires: 1994-08-05
Abstract
Abstract Apparatus for supporting and tilting the collecting chamber of a vacuum cleaner is disclosed including a chassis rollable over a floor surface, having a pair of upstanding arms, a pair of arm members pivotally connected to the upstanding arms of the chassis, and a handle pivotally connected to the arm members. The handle can be locked in either of two positions, with the first push position being such that the gripping portion of the handle is placed above the pivot point of the arm member to the chassis such that the gripping portion is in a position convenient to the operator for rolling the chassis over the floor surface and with the second tilt position being rotated from the first push position about the pivotal connection of the handle with the arm members such that the gripping portion lies below the pivot point to allow pivoting of the arm members on the chassis to tilt the collecting chamber of the vacuum cleaner so that it empties the contents therefrom.
Inventors
- 👤 Richard F. Wulff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:11
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/32; A47L9/325; B; B62; B62B; B62B3/00; B62B3/08; B62B3/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
164 words
Apparatus for tilting the collecting chamber of a vacuum cleaner comprising in combination: a. a chassis; b. first means for allowing movement of the chassis over a floor surface; c. second means for pivotally mounting the collecting chamber to the chassis about a pivot point; d. a handle having a gripping portion; e. third means for pivotally interconnecting the handle to the second means; and f. fourth means for locking the handle relative to said second means in a first push position and a second tilt position, the first push position allowing the application of a force to the gripping portion of the handle to be transferred to the chassis to cause movement of the chassis over the floor surface, and the second tilt position being rotated from the first push position to allow the application of a force to the gripping portion to pivot the second means about the pivot point to therefore tilt the collecting chamber to allow emptying the contents therefrom.
Claim 2
Dependent Claim
164 words
Apparatus for tilting the collecting chamber of a vacuum cleaner comprising in combination: a. a chassis; b. first means for allowing movement of the chassis over a floor surface; c. second means for pivotally mounting the collecting chamber to the chassis about a pivot point; d. a handle having a gripping portion; e. third means for pivotally interconnecting the handle to the second means; and f. fourth means for locking the handle relative to said second means in a first push position and a second tilt position, the first push position allowing the application of a force to the gripping portion of the handle to be transferred to the chassis to cause movement of the chassis over the floor surface, and the second tilt position being rotated from the first push position to allow the application of a force to the gripping portion to pivot the second means about the pivot point to therefore tilt the collecting chamber to allow emptying the contents therefrom.
Claim 3
Dependent Claim
97 words
The apparatus of claim 1, wherein the handle includes an angular extension which is pivotally mounted on the second means such that in the first push position, the gripping portion of the handle is placed above the pivot point of the second means and the chassis and in the second tilt position, the gripping portion of the handle lies below the pivot point of the second means and the chassis creating a force advantage due to the leverage obtained and such that gripping portion of the handle is in a convenient position for tilting the collecting chamber.
Claim 4
Dependent Claim
23 words
The apparatus of claim 2, wherein the second means includes arm members connected to the collecting chamber and pivotable about the pivot point.
Claim 5
Dependent Claim
44 words
The apparatus of claim 3, wherein the chassis includes a flat surface and a pair of upright arms extending from the rear of the flat surface adjacent the handle and the pivot point is located on the uppermost portion of the two upstanding arms.
Claim 6
Dependent Claim
51 words
The apparatus of claim 4, wherein the second means includes at least two apertures and the fourth means includes at least one biased detent mechanism carried by the handle which extends into the apertures of the second means to selectively lock the handle in the first push and second tilt positions.
Claim 7
Dependent Claim
46 words
The apparatus of claim 5, wherein the arm members connected to the chamber are horizontal, the arm members include notches for camming the detent mechanism in a direction opposite to the bias of the detent mechanism, and the angular extension of the handle is offset L-shaped.
Claim 8
Dependent Claim
51 words
The apparatus of claim 2, wherein the second means includes at least two apertures and the fourth means includes at least one biased detent mechanism carried by the handle which extends into the apertures of the second means to selectively lock the handle in the first push and second tilt positions.
Claim 9
Dependent Claim
44 words
The apparatus of claim 1, wherein the chassis includes a flat surface and a pair of upright arms extending from the rear of the flat surface adjacent the handle and the pivot point is located on the uppermost portion of the two upstanding arms.
Claim 10
Dependent Claim
23 words
The apparatus of claim 7, wherein the second means includes arm members connected to the collecting chamber and pivotable about the pivot point.
Claim 11
Dependent Claim
51 words
The apparatus of claim 1, wherein the second means includes at least two apertures and the fourth means includes at least one biased detent mechanism carried by the handle which extends into the apertures of the second means to selectively lock the handle in the first push and second tilt positions.
References Cited (Backward Citations)
US267191A
Cited
US1798565A
Cited
US1937668A
Cited
US2121514A
Cited
US2291984A
Cited
US2683012A
Cited
US3527469A
Cited
US3658383A
Cited
US3702016A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |