Patent US3807594A successfully refreshed from Google Patents.
US3807594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for securing the handle of a vacuum flask
Assignee: ISOLIERFLASCHEN KG
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Filing: 1973-01-29
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Granted: 1974-04-30
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Expires: 1993-01-29
Abstract
Abstract An arrangement for securing the handle of a vacuum flask including an outer flask jacket and a headpiece having a handle connected thereto, the handle having a downwardly extending portion and a lower free end, a pin-shaped securing element extending from the lower free handle end at a predetermined oblique angle towards an aperture formed in the periphery of the jacket and being insertable therein in jamming engagement so as to form a permanent connection with the jacket.
Inventors
- 👤 A Zimmermann
- 👤 H Dammer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:10
CPC Classifications
A; A47; A47J; A47J41/00; A47J41/0083; A47J45/00; A47J45/06; A47J45/067
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
131 words
An arrangement for securing a handle to a vacuum flask, comprising: an outer flask jacket having an aperture formed in the circumferential wall thereof; and a flask headpiece adapted to be positioned on the upper end of said jacket; a handle connected to said headpiece and extending therefrom, said handle including a downwardly depending portion extending in spaced relationship with said jacket and a lower end portion projecting towards said jacket; a handle securing means being formed at a free end face of said lower end portion in alignment with said aperture in said jacket and projecting at an oblique angle W relative to the end face, said securing means, upon positioning of said headpiece on said jacket, extending through said aperture so as to be jammed fast within said jacket.
Claim 2
Dependent Claim
131 words
An arrangement for securing a handle to a vacuum flask, comprising: an outer flask jacket having an aperture formed in the circumferential wall thereof; and a flask headpiece adapted to be positioned on the upper end of said jacket; a handle connected to said headpiece and extending therefrom, said handle including a downwardly depending portion extending in spaced relationship with said jacket and a lower end portion projecting towards said jacket; a handle securing means being formed at a free end face of said lower end portion in alignment with said aperture in said jacket and projecting at an oblique angle W relative to the end face, said securing means, upon positioning of said headpiece on said jacket, extending through said aperture so as to be jammed fast within said jacket.
Claim 3
Dependent Claim
21 words
An arrangement as claimed in claim 1, said handle securing means comprising a pin projecting towards said aperture in said jacket.
Claim 4
Dependent Claim
23 words
An arrangement as claimed in claim 2, said aperture in said jacket being dimensioned in correspondence with the cross-sectional dimensions of said pin.
Claim 5
Dependent Claim
67 words
An arrangement as claimed in claim 3, said pin being substantially droplet-shaped in longitudinal section and having a line of symmetry coinciding with an imaginary line defining said angle W relative to said handle end portion, said aperture being an essentially rectangular slot extending in the peripheral direction of said jacket, said pin having a width corresponding substantially to the maximum cross-sectional width of said droplet-shaped pin.
Claim 6
Dependent Claim
48 words
An arrangement as claimed in claim 3, said pin comprising a prigmatic land on the free end surface of said handle end portion, said land being trapezoidally-shaped in longitudinal section, said aperture in said jacket being essentially a rectangular slot extending in the peripheral direction of said jacket.
Claim 7
Dependent Claim
35 words
An arrangement as claimed in claim 2, said pin and an imaginary line extending normal to said free end surface of the handle end portion subtending an acute angle whereby said pin extends obliquely downwardly.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-29 | 1977-10-29 | 1978-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-29 | 1981-10-29 | 1982-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-29 | 1985-10-29 | 1986-04-30 | $7700.00 | Window Closed / Lapsed |