Patent US4701700A successfully refreshed from Google Patents.
Patent US4375019A successfully refreshed from Google Patents.
US4375019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for adjusting position of drive element for opening and closing automatically horizontally opening and closing sliding door
Assignee: Solic Co Ltd
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Filing: 1980-10-07
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Granted: 1983-02-22
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Expires: 2000-10-07
Abstract
Abstract A device for adjusting the position of a drive element for automatically opening and closing a sliding door which is automatically opened upon stepping on of a mat switch by a customer who intends to enter a store and is automatically closed upon releasing of the mat switch by the customer who entered the store. The drive element of the automatically opening and closing sliding door is adjusted by merely once manually opening and closing sliding door. The drive elements such as limit switches are slidably mounted, not on the sliding door but on an endless wire such as an endless belt. Thus, adjusting the drive element so that the sliding door may stop just upon completely opening or closing of the door when mounting such an automatic sliding door can be rapidly and readily accomplished.
Inventors
- 👤 Kenji Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:55
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/632; E05F15/643; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
212 words
A device for adjusting the opening and closing position of a sliding door by adjusting at least one drive element thereof, comprising in combination: (a) guide rails (6) disposed above a defined door station for guiding a sliding door (5) therealong; (b) an endless wire mechanism (3) driven by a motor (2) including controller means (1), said mechanism including endless means (7) extending across said door station held by pulleys along a travel path; (c) driven element switch means (4) and at least one position adjustable drive element (9) mounted on said endless means (7), said drive element (9) having a U-shaped frame (12) protruding ends (13) with magnet means actuators (14) for enabling said driven element switch means (4) and elastic means (15) holding said drive element (9) to said endless wire mechanism (3) but permitting said drive element (9) to slide along said mechanism when the elastic force is overcome so that the drive element may be positioned at desired locations along said travel path, said drive element being adapted to enable said driven element switch means (4); and, (d) a stopper (10) along said travel path, said stopper (10) having grooves (11) so disposed as to stop said drive element (9) to contact the driven element switch means (4).
Claim 2
Independent Claim
212 words
A device for adjusting the opening and closing position of a sliding door by adjusting at least one drive element thereof, comprising in combination: (a) guide rails (6) disposed above a defined door station for guiding a sliding door (5) therealong; (b) an endless wire mechanism (3) driven by a motor (2) including controller means (1), said mechanism including endless means (7) extending across said door station held by pulleys along a travel path; (c) driven element switch means (4) and at least one position adjustable drive element (9) mounted on said endless means (7), said drive element (9) having a U-shaped frame (12) protruding ends (13) with magnet means actuators (14) for enabling said driven element switch means (4) and elastic means (15) holding said drive element (9) to said endless wire mechanism (3) but permitting said drive element (9) to slide along said mechanism when the elastic force is overcome so that the drive element may be positioned at desired locations along said travel path, said drive element being adapted to enable said driven element switch means (4); and, (d) a stopper (10) along said travel path, said stopper (10) having grooves (11) so disposed as to stop said drive element (9) to contact the driven element switch means (4).
Claim 3
Dependent Claim
50 words
The device for adjusting the position of a drive element according to claim 1, wherein said driven element switch means consists of at least two reed switches, and said drive element opens the reed switches to deenergize the motor and to accordingly stop the drive element at a suitable position.
Claim 4
Dependent Claim
50 words
The device according to claim 1, wherein said stopper is formed perpendicularly with the endless wire mechanism, and is projected between the pulleys of said endless wire mechanism and the driven element switch means in such a manner that the endless wire may pass the grooves formed at said stopper.
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) | 1986-02-21 | 1986-08-23 | 1987-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-21 | 1990-08-23 | 1991-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-21 | 1994-08-23 | 1995-02-22 | $7700.00 | Window Closed / Lapsed |