Patent US4251703A successfully refreshed from Google Patents.
US4251703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pushbutton for use with pushbutton switches
Assignee: Alcatel Lucent NV
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Filing: 1979-10-25
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Granted: 1981-02-17
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Expires: 1999-10-25
Abstract
Abstract For physically disabled persons suffering from a disturbed coordination of movements it is necessary for the operating keys of e.g., telephone subsets, to be made variable with respect to the operating pressure. For this purpose the push-button head is designed in such a way that additional compression springs can be inserted or removed from above.
Inventors
- 👤 Siegfried Hoeft
- 👤 Gerhard Klause
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:11
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/02; H01H3/12; H01H2003/127
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
102 words
A pushbutton for a pushbutton switch comprising an actuating push rod; an energy-storing device for resetting, said pushbutton being held enagagingly in position with detent members moulded thereto to provide a resetting position; and wherein said pushbutton includes at least one latch member insertable from the top side such that space is provided below said latch member for receiving a second energy-storing device, said pushbutton further including a hole therethrough for receiving said second energy-storing device from above said switch without removing said pushbutton, said second energy-storing device being compressed and retained by said latch member and supported by said pushbutton switch.
Claim 2
Dependent Claim
102 words
A pushbutton for a pushbutton switch comprising an actuating push rod; an energy-storing device for resetting, said pushbutton being held enagagingly in position with detent members moulded thereto to provide a resetting position; and wherein said pushbutton includes at least one latch member insertable from the top side such that space is provided below said latch member for receiving a second energy-storing device, said pushbutton further including a hole therethrough for receiving said second energy-storing device from above said switch without removing said pushbutton, said second energy-storing device being compressed and retained by said latch member and supported by said pushbutton switch.
Claim 3
Dependent Claim
26 words
A pushbutton as claimed in claim 1, wherein said latch member is of cylindrical configuration and is connected to said pushbutton with a bayonet catch means.
Claim 4
Dependent Claim
18 words
A pushbutton as claimed in claim 2, wherein said bayonet catch means is undercut at said latch member.
Claim 5
Dependent Claim
30 words
A pushbutton as claimed in claim 3, further comprising at least one engaging cam on said latch member, capable of engaging behind a freely cut out tab of said pushbutton.
Claim 6
Dependent Claim
28 words
A pushbutton as claimed in claim 4, wherein in the top side of said latch member there is provided a slot for permitting actuation of said latch member.
Claim 7
Dependent Claim
15 words
A pushbutton as claimed in claim 1, wherein said energy-storing device comprises a helical spring.
Claim 8
Dependent Claim
17 words
A pushbutton as claimed in claim 6, wherein said helical spring is retained by an extension means.
Claim 9
Dependent Claim
15 words
A pushbutton as claimed in claim 7, wherein said extension means is of tubular design.
Claim 10
Dependent Claim
22 words
A pushbutton as claimed in claim 8, wherein said tubular extension means also receives the actuating push rod of said pushbutton switch.
Claim 11
Dependent Claim
18 words
A pushbutton as claimed in claim 1, wherein the top side thereof further includes a snap-on type cap.
Claim 12
Dependent Claim
20 words
A pushbutton as claimed in claim 10, further including a small recess at the upper edge for loosening said cap.
Claim 13
Dependent Claim
20 words
A pushbutton as claimed in claim 11, wherein said cap is comprised of transparent material for covering an inscription label.
Claim 14
Dependent Claim
14 words
A pushbutton as claimed in claim 12, wherein said pushbutton is rectangular in outline.
Claim 15
Dependent Claim
14 words
A pushbutton as claimed in claim 12, wherein said pushbutton is circular in outline.
Claim 16
Dependent Claim
37 words
A pushbutton as claimed in claim 1, further comprising snap-on detents moulded to the outside near the bottom edge of said pushbutton, and engaging behind resilient hooks moulded to a mounting board in a standing up position.
Claim 17
Dependent Claim
35 words
A pushbutton as claimed in claim 15, wherein said snap-on detents form part of snap-on hooks projecting from the lower edge of said pushbutton, and engage behind correspondning recesses provided for in said mounting board.
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) | 1984-02-17 | 1984-08-18 | 1985-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-17 | 1988-08-18 | 1989-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-17 | 1992-08-18 | 1993-02-17 | $7700.00 | Window Closed / Lapsed |