US4239487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable orthodontic appliance
Assignee: Universal Dynamics Inc
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Filing: 1979-07-20
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Granted: 1980-12-16
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Expires: 1999-07-20
Abstract
Abstract A U-shaped acrylic body is separated at its closed end and slideably connected by means of a turnbuckle to allow lateral adjustment, the acrylic body further having a palatal wire extending into the palatal area of the mouth, buccal wires emerging from the outer sides and extending in a rectangular construction parallel thereto, and cuspid guidance wires emerging perpendicularly from the outer sides. The palatal wire is separated at its approximate midpoint in the palatal area and slideably connected, such that when the appliance is positioned in the mouth adjacent the inner sides of the teeth the wearer can make periodic lateral adjustments.
Inventors
- 👤 Dwight Murdock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:39
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
160 words
An orthodontic appliance comprising (a) a U-shaped plastic body adapted to fit within the mouth adjacent the inner sides of the upper and lower teeth, the closed end being adjacent the front teeth and being separated at the approximate midpoint to divide the plastic body into slightly spaced apart matching halves; (b) means disposed across the separation of the closed end of the plastic body for connecting the two halves and allowing each half to be moved apart laterally; (c) a palatal wire connected across the sides of the plastic body and adapted to extend into the palatal area and towards the rear of the mouth, the wire being separated at its approximate midpoint; (d) means for slideably connecting the free ends of the palatal wire for allowing lateral movement thereof; and (e) a pair of buccal wires, each attached to an outer side of the plastic body, the wires adapted to abut the teeth on the outer sides thereof.
Claim 2
Dependent Claim
160 words
An orthodontic appliance comprising (a) a U-shaped plastic body adapted to fit within the mouth adjacent the inner sides of the upper and lower teeth, the closed end being adjacent the front teeth and being separated at the approximate midpoint to divide the plastic body into slightly spaced apart matching halves; (b) means disposed across the separation of the closed end of the plastic body for connecting the two halves and allowing each half to be moved apart laterally; (c) a palatal wire connected across the sides of the plastic body and adapted to extend into the palatal area and towards the rear of the mouth, the wire being separated at its approximate midpoint; (d) means for slideably connecting the free ends of the palatal wire for allowing lateral movement thereof; and (e) a pair of buccal wires, each attached to an outer side of the plastic body, the wires adapted to abut the teeth on the outer sides thereof.
Claim 3
Dependent Claim
36 words
The orthodontic appliance of claim 1 additionally comprising a pair of wire loops extending perpendicularly from the sides of the plastic body out to the area of the buccal wires, for cuspid positioning of the appliance.
Claim 4
Dependent Claim
42 words
The orthodontic appliance of claim 1 wherein the means connecting the two halves of the plastic body comprises a turnbuckle set into the plastic and having a metal pin with an aperture exposed between the separation, for lateral adjustment by the wearer.
Claim 5
Dependent Claim
39 words
The orthodontic appliance of claim 1 wherein the means for slideably connecting the free ends of the palatal wire comprises a cylindrical metal member attached to one free end and being adapted to snugly receive the other free end.
Claim 6
Dependent Claim
40 words
The orthodontic appliance of claim 1 wherein each buccal wire comprises a single wire emerging from the front portion of the plastic body and running along the side thereof in a substantially rectangular construction back to the point of emergence.
Claim 7
Dependent Claim
33 words
The orthodontic appliance of claim 1 wherein the closed end of the plastic body has a flange which projects between the wearer's incisors and contacts the upper and lower incisors after biting down.
Claim 8
Dependent Claim
14 words
The orthodontic appliance of claim 1 wherein the plastic body is formed of acrylic.
Claim 9
Dependent Claim
34 words
The orthodontic appliance of claim 1 wherein the buccal wires fit between the canine and premolar teeth on either side of the wear's jaw, and wherein the wire loops fit behind the second premolars.
Claim 10
Dependent Claim
22 words
The orthodontic appliance of claim 1 wherein the inner sides of the plastic body have grooves accomodating adjacent upper and lower teeth.
Claim 11
Dependent Claim
31 words
The orthodontic appliance of claim 1 additionally comprising integral plastic panels running across the front of the appliance from either side thereof and from the closed end of the plastic body.
Claim 12
Dependent Claim
29 words
The orthodontic appliance of claim 10 wherein each of the sides of the plastic body are separated and slideably connected, to allow front to rear adjustment of the appliance.
Claim 13
Dependent Claim
33 words
The orthodontic appliance of claim 1 wherein the closed end of the plastic body has an upward projecting portion for preventing the tongue from thrusting between the teeth, to remedy open bite malocclusions.
References Cited (Backward Citations)
US3454001A
Cited
US4026023A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-16 | 1984-06-16 | 1984-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-16 | 1988-06-16 | 1988-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-16 | 1992-06-16 | 1992-12-16 | $7700.00 | Window Closed / Lapsed |