US3665606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling for the connection of a dental handpiece to a power source
Assignee: Kaltenbach and Voigt GmbH
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Filing: 1969-04-02
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Granted: 1972-05-30
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Expires: 1989-04-02
Abstract
Abstract A sleeve of a dental handpiece is connected directly or via an intermediate sleeve to a drive motor by means of the engagement of a hook, mounted on an elastic arm secured to the motor, in an annular groove formed in the sleeve. The hook is selectively displaced from the groove to uncouple the sleeve and motor by axially displacing a shift member, externally mounted on the sleeve, which causes a sliding ring connected with the shift member to pass over the hook and displace the same from the groove against the opposition of the resilient arm.
Inventors
- 👤 Martin Saupe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:19
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/08; A61C1/18
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
161 words
A coupling for a dental handpiece comprising a sleeve member, a drive member and coupling means releasably connecting the sleeve member and drive member, said drive member including a portion slidably engaged in said sleeve member, a first one of said members having an annular groove, the other member including a displaceable element extending into said groove and engaging said first member so as to connect said members together while enabling relative rotation therebetween, said displaceable element comprising a hook engageable in said groove and a resilient arm supporting said hook, and slidable means engaged with said Members and adapted to contact said element for selectively displacing said element from said groove to uncouple said members, said slidable means comprising an axially movable shift sleeve and a sliding ring coupled to the shift sleeve for displacement therewith, said sliding ring bounding said groove to displace the hook therefrom, against the opposition of said resilient arm, as the shift sleeve is displaced.
Claim 2
Dependent Claim
161 words
A coupling for a dental handpiece comprising a sleeve member, a drive member and coupling means releasably connecting the sleeve member and drive member, said drive member including a portion slidably engaged in said sleeve member, a first one of said members having an annular groove, the other member including a displaceable element extending into said groove and engaging said first member so as to connect said members together while enabling relative rotation therebetween, said displaceable element comprising a hook engageable in said groove and a resilient arm supporting said hook, and slidable means engaged with said Members and adapted to contact said element for selectively displacing said element from said groove to uncouple said members, said slidable means comprising an axially movable shift sleeve and a sliding ring coupled to the shift sleeve for displacement therewith, said sliding ring bounding said groove to displace the hook therefrom, against the opposition of said resilient arm, as the shift sleeve is displaced.
Claim 3
Dependent Claim
51 words
A coupling as claimed in claim 1 wherein said one member is said sleeve member and said other member is the drive member, said slidable means comprising a pin connecting said shift sleeve and sliding ring, said sleeve member being provided with an elongated groove receiving said pin for displacement therein.
Claim 4
Dependent Claim
36 words
A coupling as claimed in claim 2 wherein said portion of the drive member is provided with an external longitudinal groove, said resilient arm being secured in said groove in said portion of the drive member.
Claim 5
Dependent Claim
20 words
A coupling as claimed in claim 3 wherein said axially movable shift sleeve is externally mounted on said sleeve member.
Claim 6
Dependent Claim
20 words
A coupling as claimed in claim 4 wherein said hook has a nose with a tapered surface facing said ring.
Claim 7
Dependent Claim
29 words
A coupling as claimed in claim 5 wherein said sleeve member comprises a cap thereon having a wall bounding said groove on a side thereof opposite said sliding ring.
Claim 8
Dependent Claim
17 words
A coupling as claimed in claim 6 wherein said cap is threadably engaged with said sleeve member.
Claim 9
Dependent Claim
44 words
A coupling as claimed in claim 5 wherein said groove in the sleeve member has a depth such that as the sliding ring passes into the groove the sliding ring passes over the nose and therebeyond to maintain the hook in a depressed position.
Claim 10
Dependent Claim
24 words
A coupling as claimed in claim 1 wherein said sleeve member and drive member are relatively rotatable when connected together by the coupling means.
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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |