Patent US4595993A successfully refreshed from Google Patents.
US4595993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manually reciprocative section of an electronic apparatus
Assignee: Sharp Corp
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Filing: 1983-05-17
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Granted: 1986-06-17
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Expires: 2003-05-17
Abstract
Abstract A manually reciprocative section of an electronic apparatus including a programmable calculator comprises a spring, a lock element, and a lock release element. The reciprocative section is drawn out of and enclosed into the housing of the electronic apparatus. The spring shows a maximum stroke when the reciprocative section is fully enclosed within the housing and a minimum stroke when the reciprocative section is fully drawn out of the housing. The reciprocative section carries a keyboard etc. to store it when it is in no use. The lock means comprises a lock lever secured on the housing of the apparatus, and a cavity for capturing and releasing the lock lever in response to the movement of the reciprocative section.
Inventors
- 👤 Keiji Yao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:26
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/02; G06F3/0202; B; B41; B41J; B41J5/00; B41J5/08; B41J5/10; Y; Y10; Y10S; Y10S292/00; Y10S292/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
123 words
An electronic apparatus comprising a housing, a reciprocative section mounted in said housing for reciprocating movement into and out of said housing, spring means for continuously urging said reciprocative section in a first direction, lock means for locking said reciprocative section to said housing, said lock means comprises a lock lever secured to said housing and an engagement unit secured to said reciprocative section, a cavity located in said engagement unit, said cavity having an opening for receiving said lock lever and surface means for engagement with said lock lever, a projection having first, second, third and fourth sides positioned in said cavity surface and means on said sides for engagement with said lock lever and for holding said lock lever in place.
Claim 2
Dependent Claim
123 words
An electronic apparatus comprising a housing, a reciprocative section mounted in said housing for reciprocating movement into and out of said housing, spring means for continuously urging said reciprocative section in a first direction, lock means for locking said reciprocative section to said housing, said lock means comprises a lock lever secured to said housing and an engagement unit secured to said reciprocative section, a cavity located in said engagement unit, said cavity having an opening for receiving said lock lever and surface means for engagement with said lock lever, a projection having first, second, third and fourth sides positioned in said cavity surface and means on said sides for engagement with said lock lever and for holding said lock lever in place.
Claim 3
Dependent Claim
60 words
An electronic apparatus as set forth in claim 1, wherein said projection first side has two surfaces at an angle to each other forming an intersection facing said cavity opening, said intersection being located to one side of said cavity opening so that said lock lever is directed around said second side of said projection upon entering said cavity opening.
Claim 4
Dependent Claim
65 words
An electronic apparatus as set forth in claim 2, wherein said cavity has a back wall, said projection third side has two surfaces intersecting at an angle to each other facing said cavity back wall, and said third side intersecting surfaces holding said lock lever in place in the absence of movement of said reciprocative section in a second direction opposite to said first direction.
Claim 5
Dependent Claim
67 words
An electronic apparatus as set forth in claim 3, wherein said cavity back wall includes a plurality of surfaces, one said back wall surface directs said lock lever to said third side intersecting surfaces, another said back wall surface positions said lock lever so that it is directed around said fourth side of said projection when there is movement of said reciprocative section in said second direction.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-16 | 1989-12-16 | 1990-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-16 | 1993-12-16 | 1994-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-16 | 1997-12-16 | 1998-06-17 | $7700.00 | Window Closed / Lapsed |