US4349710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door edge for attachment to a train door and the like
Assignee: Individual
•
Filing: 1980-12-15
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Granted: 1982-09-14
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Expires: 2000-12-15
Abstract
Abstract A door edge including an elongate hollow resiliently flexible body for securement to a door generally in the plane of the door, the body having an outer wall remote from the door of a cross-sectional configuration generally sinuous or corrugated, and a compression actuable switch extending longitudinally within the hollow body for actuation upon compression by a trough or depression of the sinuous outer wall.
Inventors
- 👤 Norman K. Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:53
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/40; E05F15/42; E05F15/44; B; B60; B60J; B60J10/00; B60J10/40; H; H01; H01H; H01H3/00; H01H3/02; H01H3/14; H01H3/141; H01H3/142; E05Y; E05Y2900/00; E05Y2900/50; E05Y2900/51
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
145 words
A door edge for attachment to a train door and the like and comprising an elongate hollow body of resilient flexible material having an inner wall for securement to a door, side walls extending from opposite sides of said inner wall away from a door, and an outer wall extending between said side walls remote from a door; said outer wall being generally sinuous in cross section and defining externally a longitudinally extending crest and adjacent trough; an elongate compression actuable switch assembly located longitudinally of and within said hollow body proximate to said outer wall for compression thereby; and a control web internally of said hollow body extending generally from said trough laterally to one of said side walls and swingable relative thereto for guiding said trough generally inwardly into compressing engagement with said switch assembly upon deflection of said crest by external force.
Claim 2
Dependent Claim
145 words
A door edge for attachment to a train door and the like and comprising an elongate hollow body of resilient flexible material having an inner wall for securement to a door, side walls extending from opposite sides of said inner wall away from a door, and an outer wall extending between said side walls remote from a door; said outer wall being generally sinuous in cross section and defining externally a longitudinally extending crest and adjacent trough; an elongate compression actuable switch assembly located longitudinally of and within said hollow body proximate to said outer wall for compression thereby; and a control web internally of said hollow body extending generally from said trough laterally to one of said side walls and swingable relative thereto for guiding said trough generally inwardly into compressing engagement with said switch assembly upon deflection of said crest by external force.
Claim 3
Dependent Claim
32 words
A door edge according to claim 1, said crest and trough being offset on opposite sides of a longitudinal centerline for complementary mating engagement with a like outer wall in inverted condition.
Claim 4
Dependent Claim
56 words
A door edge according to claim 1, said control web extending to the side wall adjacent to said crest and combining therewith to define an elongate nose chamber, and an elongate reinforcement member conformably engaging in said nose chamber and of a selected rigidity to achieve a desired sensitivity of switch assembly operation to crest deflection.
Claim 5
Dependent Claim
27 words
A door edge according to claim 3, said reinforcing member comprising a flexible tube having a cross section sized for engaging interior surfaces of said nose chamber.
Claim 6
Dependent Claim
99 words
A door edge according to claim 1, in combination with a pair of internal partitions in generally parallel spaced relation with each other and extending between opposite side walls respectively adjacent to said inner and outer walls, said switch assembly being conformably received between said outer wall and the adjacent partition for location close to said trough and responsive actuation thereby, the partition adjacent to said inner wall combining therewith to define a tubular region rigidified by securement to a door while the side wall portions between said partitions afford a resiliently flexible intermediate region of said hollow body.
Claim 7
Dependent Claim
97 words
A door edge according to claim 1, said switch assembly comprising a longitudinally extending channel facing toward said outer wall, a resiliently yieldable base in said channel, a first flexible conductor on said base facing toward said outer wall, a resiliently compressible spacer on said first conductor and having openings, a second flexible conductor on said spacer and facing through said openings to said first conductor, a resiliently yieldable outer cushion on said second conductor proximate to said outer wall, and an enclosure of impervious flexible sheet material encasing said switch assembly and defining a humidity seal.
Claim 8
Dependent Claim
38 words
A door edge according to claim 6, at least one of said flexible conductors comprising a flexible sheet of conductive foil having a multiplicity of creases for flexure with a minimum of internal stress, to enhance conductor life.
Claim 9
Dependent Claim
19 words
A door edge according to claim 6, said channel being relatively rigid and in retaining reception with said base.
Claim 10
Dependent Claim
18 words
A door edge according to claim 8, said channel being articulated for location in a non-straight hollow body.
Claim 11
Dependent Claim
26 words
A door edge according to claim 8, in combination with interfitting formations on said channel and base for positive retention of the latter by said channel.
Claim 12
Dependent Claim
114 words
A pressure sensitive switch construction comprising a resiliently compressible intermediate member having through openings, flexible conductive sheets on opposite sides of said intermediate member in facing relation through said openings, and outer cushions externally of said conductive sheets and deflectible to flex said conductive sheets into engagement with each other through said openings, at least one of said conductive sheets comprising a flexible backing, and a flexible facing having a multitude of folds and secured in facing relation to said backing throughout its facing surface excepting said folds being unsecured, said one conductive sheet being flexible with flexure of said facing being taken up by said folds for minimum internal strain and enhanced life.
Claim 13
Dependent Claim
114 words
A pressure sensitive switch construction comprising a resiliently compressible intermediate member having through openings, flexible conductive sheets on opposite sides of said intermediate member in facing relation through said openings, and outer cushions externally of said conductive sheets and deflectible to flex said conductive sheets into engagement with each other through said openings, at least one of said conductive sheets comprising a flexible backing, and a flexible facing having a multitude of folds and secured in facing relation to said backing throughout its facing surface excepting said folds being unsecured, said one conductive sheet being flexible with flexure of said facing being taken up by said folds for minimum internal strain and enhanced life.
Claim 14
Dependent Claim
17 words
A pressure sensitive switch construction according to claim 11, said conductive sheets having pleats defining said folds.
Claim 15
Dependent Claim
17 words
A pressure sensitive switch construction according to claim 11, said conductive sheets having creases defining said folds.
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) | 1985-09-13 | 1986-03-15 | 1986-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-13 | 1990-03-15 | 1990-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-13 | 1994-03-15 | 1994-09-14 | $7700.00 | Window Closed / Lapsed |