US4141401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soft carrying case
Assignee: Individual
•
Filing: 1977-02-28
•
Granted: 1979-02-27
•
Expires: 1997-02-28
Abstract
Abstract A soft carrying case for battery-powered, hand-held calculators and the like, as described herein, prevents the user from turning on the calculator while that calculator is in the carrying case, and provides the user with a way of detecting when the calculator is on if inserted into the carrying case without first being turned off.
Inventors
- 👤 Arno R. Hindemit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:10
CPC Classifications
A; A45; A45C; A45C11/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
84 words
In combination, a portable, battery-powered electronic device having a power-on switch, and a carrying case of soft pliable material conforming substantially to the contours of the device and having a non-pliable, transparent insert positioned on the case to correspond to the location of the power-on switch of the device when that device is enclosed in the carrying case, said insert preventing interference of the carrying case with the power-on switch to preclude inadvertent actuation thereof when the device is enclosed in the carrying case.
Claim 2
Dependent Claim
84 words
In combination, a portable, battery-powered electronic device having a power-on switch, and a carrying case of soft pliable material conforming substantially to the contours of the device and having a non-pliable, transparent insert positioned on the case to correspond to the location of the power-on switch of the device when that device is enclosed in the carrying case, said insert preventing interference of the carrying case with the power-on switch to preclude inadvertent actuation thereof when the device is enclosed in the carrying case.
Claim 3
Dependent Claim
38 words
The combination as in claim 1 wherein the carrying case includes a plurality of inserts positioned on the case to correspond to the locations that the power-on switch of the device can have for all possible case-to-device orientations.
Claim 4
Dependent Claim
82 words
The combination as in claim 1 wherein the insert includes a transparent plate sandwiched between two rings for holding said plate firmly therebetween: said rings being held together by interference fit of the inside diameter of one of said rings with the outside diameter of the other of said rings; the material around the periphery of an opening in the case to receive the insert also being sandwiched between said two rings for holding the insert firmly in place on the case.
Claim 5
Dependent Claim
30 words
The combination as in claim 1 wherein the position of the power-on switch of the device is observable through the non-pliable insert when that device is enclosed in the case.
References Cited (Backward Citations)
US1535312A
Cited
US2290307A
Cited
US2681600A
Cited
US3295576A
Cited
US3314348A
Cited
US3286751A
Cited
US3731586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-26 | 1982-08-28 | 1983-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-26 | 1986-08-28 | 1987-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-26 | 1990-08-28 | 1991-02-27 | $7700.00 | Window Closed / Lapsed |