US1127635A - Dental impression-tray. - Google Patents

Dental impression-tray. Download PDF

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Publication number
US1127635A
US1127635A US1914839680A US1127635A US 1127635 A US1127635 A US 1127635A US 1914839680 A US1914839680 A US 1914839680A US 1127635 A US1127635 A US 1127635A
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United States
Prior art keywords
tray
handle
dental impression
loops
prongs
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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Inventor
Robert M Kerr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kerr Dental Manufacturing Co
Original Assignee
Detroit Dental Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Detroit Dental Manufacturing Co filed Critical Detroit Dental Manufacturing Co
Priority to US1914839680 priority Critical patent/US1127635A/en
Application granted granted Critical
Publication of US1127635A publication Critical patent/US1127635A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C9/00Impression cups, i.e. impression trays; Impression methods
    • A61C9/0006Impression trays

Description

R. M. KERR. i DENTAL IMPRESSION TRAY. APPLICATION FILED MAY 20, 1914.

1,127,635. Patent etl Feb. 9, 1915.

WITNESSES." IN VEN TOR Bobert M 1552') ZbJyh-m A TTORNE KS' THE NORRIS PETERS co. FHOTOVLIIHQ. LVASHING ION L)v Cv IINITED sTaTns Parana ornron.

ROBERT M. KERR, 015 DETROIT, MICHIGAN, ASSIGNOR T0 DETROIT DENTAL MANUFAC- TUBING COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

DENTAL IMPRESSION-TRAY.

Specification of Letters Patent.

Patented Feb. 9, 1915.

Application filed May 20, 1914. Serial No. 839,680.

To all whom it may concern Be it known that I, ROBERT M. KERR, a citizen of the United States of America, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Dental Impression-Trays, of which the following is aspecification, reference being had therein to the accompanying drawings.

The invention relates to dental impression trays of that type in which the handle is removable to permit the patient to close the mouth.

It is the object of the invention to obtain a construction which is inexpensive to manufacture and which permits of forming both the tray and the handle of stampings with integral securing means.

In the drawings: Figure 1 and Fig. 2 are perspective views respectively of the.tray and handle in reverse position and detached from each other; Fig. 3 is a bottom plan view showing the handle in engagement with the tray; Fig. 4 is a longitudinal section therethrough; and Fig. 5 is a cross section.

A is the tray which is formed of a stamping of suitable material, such for instance as aluminum.

B are loops struck out from the bottom of the tray by the forming operation and which form securing sockets for the prongs of the handle C. This handle is preferably formed with the divergent prongs D and D for respectively engaging the loops B and B upon opposite sides of the tray, and a central short prong D for engaging the loop B All of these prongs are preferably formed in the same plane, and as the loops are also in a common plane the handle may be readily engaged or disengaged by a telescopic movement.

In use, the struck-out loops do not interferewith the placing of the impression material in the tray, nor does this material interfere with the adjustment or detachment of the handle. Consequently the handle may be used for placing the tray in the mouth and removing it from the same, and may be detached from the tray while it remains in the mouth. The recesses formed in the bottom of the tray by the struck out loops perform another function, viz., in the anchoring of the plastic material in the tray. It has been found in practice that it is difficult to cause certain plastic compounds to adhere to the smooth surface of the tray, but where there are depressions or perforations an interlock is formed which increases the adhesion.

To secure the handle from accidental displacement, the engagement between the prongs and the struck-out loops is preferably such as to produce a resilient tension. This will introduce the desired degree of friction to hold the handle in place without interfering with its removal when desired.

What I claim as my invention is A dental tray formed of a stamping having a plurality of loops struck downward from the bottom portion thereof, and arranged in a common plane, and a handle formed from a flat sheet of metal having a plurality of prongs registerable with the respective loops and telescopically engageable therewith, all of said prongs being disengageable from the respective loops by movement in a single direction.

In testimony whereof I afiix my signature in presence of two witnesses.

ROBERT M. KERR.

Witnesses:

JAMES P. BARRY, HENRIETTA E. BOWMAN.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

US1914839680 1914-05-20 1914-05-20 Dental impression-tray. Expired - Lifetime US1127635A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US1914839680 US1127635A (en) 1914-05-20 1914-05-20 Dental impression-tray.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1914839680 US1127635A (en) 1914-05-20 1914-05-20 Dental impression-tray.

Publications (1)

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US1127635A true US1127635A (en) 1915-02-09

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US1914839680 Expired - Lifetime US1127635A (en) 1914-05-20 1914-05-20 Dental impression-tray.

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4432728A (en) * 1978-08-07 1984-02-21 Skarky Floyd E Dental tray
US4445856A (en) * 1981-02-10 1984-05-01 Robert Sturtzkopf Method and device for determining the relative position of the upper jaw and lower jaw for the production of dentures
US5752826A (en) * 1994-11-17 1998-05-19 Ormco Corporation Dental impression tray and handle assembly
US20080286716A1 (en) * 2007-05-18 2008-11-20 Mark Sherwood Dental tray with anterior torque reducing handle
US20130130193A1 (en) * 2011-11-22 2013-05-23 Ranir, Llc Oral orthosis handle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4432728A (en) * 1978-08-07 1984-02-21 Skarky Floyd E Dental tray
US4445856A (en) * 1981-02-10 1984-05-01 Robert Sturtzkopf Method and device for determining the relative position of the upper jaw and lower jaw for the production of dentures
US5752826A (en) * 1994-11-17 1998-05-19 Ormco Corporation Dental impression tray and handle assembly
US20080286716A1 (en) * 2007-05-18 2008-11-20 Mark Sherwood Dental tray with anterior torque reducing handle
US20130130193A1 (en) * 2011-11-22 2013-05-23 Ranir, Llc Oral orthosis handle
US9119686B2 (en) * 2011-11-22 2015-09-01 Ranir, Llc Oral orthosis handle

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