Patent US3633942A successfully refreshed from Google Patents.
US3633942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wand lock for vacuum cleaner
Assignee: NEW REGINA CORP
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Filing: 1970-01-08
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Granted: 1972-01-11
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Expires: 1990-01-08
Abstract
Abstract A locking mechanism for coupling together tubular sections forming a so-called wand useful in connection with vacuum cleaners and the like. The locking mechanism provides long life in effectively holding together the wand sections, is easy to manipulate and prevents leakage of air from the system.
Inventors
- 👤 Carl E Meyerhoefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:54
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/24; A47L9/242; Y; Y10; Y10T; Y10T403/00; Y10T403/53; Y10T403/535
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
136 words
A locking mechanism comprising in combination: a pair of tubular sections having ends adapted to be disposed in telescopic relationship, said sections each including walls of a thickness and of material such that they are flexible under pressure, said outermost section having a slotted opening extending axially from its telescoped end; a clamping band circumferentially surrounding the outermost of said sections adjacent its telescoped end, said band having an integral bearing surface portion overlying said slotted opening; and a cam element pivotally supported for rotation between oppositely disposed, outwardly projecting portions of said band and which are located adjacent either end of said band; means for rotating said cam element to cause its periphery to act against the bearing surface portion of said band so that said band is tightened and the outermost section is compressed.
Claim 2
Dependent Claim
136 words
A locking mechanism comprising in combination: a pair of tubular sections having ends adapted to be disposed in telescopic relationship, said sections each including walls of a thickness and of material such that they are flexible under pressure, said outermost section having a slotted opening extending axially from its telescoped end; a clamping band circumferentially surrounding the outermost of said sections adjacent its telescoped end, said band having an integral bearing surface portion overlying said slotted opening; and a cam element pivotally supported for rotation between oppositely disposed, outwardly projecting portions of said band and which are located adjacent either end of said band; means for rotating said cam element to cause its periphery to act against the bearing surface portion of said band so that said band is tightened and the outermost section is compressed.
Claim 3
Dependent Claim
25 words
A mechanism as defined in claim 1, in which said bearing surface portion includes inwardly directed projections for abutting against the sides of said openings.
Claim 4
Dependent Claim
23 words
A mechanism as defined in claim 2, further including a relatively flat slotted portion of said band lying opposite said bearing surface portion.
Claim 5
Dependent Claim
28 words
A mechanism as defined in claim 3, in which said means for rotating said cam element includes a pivot pin extending between the outward projections of said band.
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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |