US3664024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retriever for dental saliva ejector
Assignee: Weber Dental Manufacturing Co
•
Filing: 1970-12-30
•
Granted: 1972-05-23
•
Expires: 1990-12-30
Abstract
Abstract A retriever construction for positioning, retrieving and storing a flexible hose of a dental saliva ejector preferably within a dental console. A traveling car is slidably mounted on a vertical post having a fixed pulley at its upper end. The car has a pair of spaced pulleys and a locking mechanism. The ejector hose is looped around the fixed and car pulleys so that the car moves upward on the post as the hose is extended outward for use. The locking mechanism is selectively engaged in one of a plurality of positioning notches formed on the post and holds the hose in various extended positions of the hose. The car automatically returns the hose to retracted hose storage position looped around the pulleys when the locking mechanism is released upon full extension of the hose.
Inventors
- 👤 Dean H Buchtel
- 👤 John A Maurer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:29
CPC Classifications
A; A61; A61G; A61G15/00; A61G15/14; A61G15/16
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
384 words
Retriever construction for a dental saliva ejector hose including a post; the post having an edge formed with a series of notches including a release notch adjacent its top end, a reset notch adjacent its bottom end, a plurality of spaceD locking notches intermediate the release and reset notches, and a quickrelease notch below the locking notches and above the reset notch; car means mounted for movement between upper and lower car positions on the post; pulley means mounted on the post and car means, said pulley means forming hose loop storage means extensible and retractable upon car movement on said post between upper and lower positions for a hose threaded in loops around said pulley means; latch means mounted on the car means and movable between reset and release positions operatively and selectively engageable with said notches upon car movement up and down said post; said latch means being operative in reset position to latch said car means at any selected locking notch location during car movement upward on said post, said latch means automatically moving from reset to release position upon arrival of the car means at the upper end of the post with the latch means adjacent said release notch, said latch means being operative in release position at the upper end of the post to permit the car means to move freely downward on the post by gravity to the lower car position to locate said latch means adjacent said reset notch, said latch means being moved from release to reset position as the car means moves upward from said lower car position, and said latch means being moved from release to reset position when the car means is moved downward on the post to a position at least adjacent said quick-release notch and then moved upward; stop means supporting the car means at lower car position upon arrival of the car means at such position; and movement of the car means being initiated and controlled by pulling on or releasing pull on the hose, whereby the car means automatically returns the hose to retracted hose storage position looped about the pulley means when the latch means moves to release position on arrival of the car means at the upper car position and upon then releasing pull on the hose.
Claim 2
Dependent Claim
384 words
Retriever construction for a dental saliva ejector hose including a post; the post having an edge formed with a series of notches including a release notch adjacent its top end, a reset notch adjacent its bottom end, a plurality of spaceD locking notches intermediate the release and reset notches, and a quickrelease notch below the locking notches and above the reset notch; car means mounted for movement between upper and lower car positions on the post; pulley means mounted on the post and car means, said pulley means forming hose loop storage means extensible and retractable upon car movement on said post between upper and lower positions for a hose threaded in loops around said pulley means; latch means mounted on the car means and movable between reset and release positions operatively and selectively engageable with said notches upon car movement up and down said post; said latch means being operative in reset position to latch said car means at any selected locking notch location during car movement upward on said post, said latch means automatically moving from reset to release position upon arrival of the car means at the upper end of the post with the latch means adjacent said release notch, said latch means being operative in release position at the upper end of the post to permit the car means to move freely downward on the post by gravity to the lower car position to locate said latch means adjacent said reset notch, said latch means being moved from release to reset position as the car means moves upward from said lower car position, and said latch means being moved from release to reset position when the car means is moved downward on the post to a position at least adjacent said quick-release notch and then moved upward; stop means supporting the car means at lower car position upon arrival of the car means at such position; and movement of the car means being initiated and controlled by pulling on or releasing pull on the hose, whereby the car means automatically returns the hose to retracted hose storage position looped about the pulley means when the latch means moves to release position on arrival of the car means at the upper car position and upon then releasing pull on the hose.
Claim 3
Dependent Claim
23 words
The construction defined in claim 1 in which the release, reset, and quick-release notches have greater length and depth than the locking notches.
Claim 4
Dependent Claim
35 words
The construction defined in claim 1 in which the pulley means includes a pulley journalled on the post adjacent its top end, and a pair of pulleys journalled in spaced relation on the car means.
Claim 5
Dependent Claim
58 words
The construction defined in claim 1 in which the car means includes a rectangular mounting plate and grooved wheels journalled on the plate adjacent each of the four corners of the plate, and in which the grooved wheels engage and travel along the edges of the post in moving between upper and lower car positions on the post.
Claim 6
Dependent Claim
37 words
The construction defined in claim 1 in which the stop means comprises a laterally extending flange at the lower end of the post engaging and supporting the car means when the latter is at lower car position.
Claim 7
Dependent Claim
72 words
The construction defined in claim 1 in which the pulley means includes a pair of pulleys journalled in vertically spaced relation on the car means; in which a hose guard flange projects below the lower pulley of the pair; and in which the stop means comprises a laterally extending flange at the lower end of the post engaged by the guard flange when the car means is located at lower car position.
Claim 8
Dependent Claim
44 words
The construction defined in claim 1 in which the pulley means includes a pair of pulleys journalled in spaced relation on the car means, and in which hose counterbalancing weight means is mounted on the car means between the spaced pulleys of the pair.
Claim 9
Dependent Claim
42 words
The construction defined in claim 1 in which the latch means comprises a pawl loosely pivotally mounted on the car means having a notch engageable end selectively engageable with portions of the post notches upon car movement up and down the post.
Claim 10
Dependent Claim
35 words
The construction defined in claim 8 in which the loose pivotal mounting of the pawl on the car means includes a pin on the car means extending through an elongated slot formed in the pawl.
Claim 11
Dependent Claim
24 words
The construction defined in claiM 8 in which the pawl has a pointed end engageable with the edge of the post and notches therein.
Claim 12
Dependent Claim
28 words
The construction defined in claim 8 in which the pawl is movable between reset and release positions, and in which the pawl is normally biased to release position.
Claim 13
Dependent Claim
31 words
The construction defined in claim 8 in which the pawl has a pointed end and a weighted end, and in which the weighted end normally biases the pawl to release position.
Claim 14
Dependent Claim
38 words
The construction defined in claim 8 in which the pawl has a pointed end, and in which the pointed end is directed upwardly at an angle toward the notched post edge when the pawl is in release position.
Claim 15
Dependent Claim
18 words
The construction defined in claim 13 including adjustment means for adjusting the release position angle of the pawl.
Claim 16
Dependent Claim
38 words
The construction defined in claim 8 in which the pawl has a pointed end, and in which the pointed end is directed downwardly at an angle toward the notched post edge when the pawl is in reset position.
Claim 17
Dependent Claim
43 words
The construction defined in claim 8 in which the reset notch has an upper shoulder, and in which said shoulder is engaged by the pawl as the car means is moved upwardly from its lower position to reset the pawl to reset position.
Claim 18
Dependent Claim
75 words
The construction defined in claim 8 in which a pair of locator rolls is mounted in spaced relation on the car means, in which the pawl is loosely pivotally mounted on the car means between said locator rolls, in which the pawl has a pointed end, and in which the locator rolls engage and roll on the notched post edge to determine the location of the pointed end with respect to the notched post edge.
Claim 19
Dependent Claim
24 words
The construction defined in claim 1 including a dental console, and in which the post is mounted in vertically extending position within the console.
Claim 20
Dependent Claim
321 words
Retriever construction for a dental saliva ejector hose including a post, the post having an edge formed with a series of notches including a release notch adjacent its top end, a reset notch adjacent its bottom end, and a plurality of spaced locking notches intermediate the release and reset notches; car means mounted for movement between upper and lower car positions on the post; pulley means mounted on the post and car means, said pulley means forming hose loop storage means extensible and retractable upon car movement on said post between upper and lower positions for a hose threaded in loops around said pulley means; a pawl loosely pivotally mounted on the car means movable between reset and release positions; said pawl and locking notches forming lock means for selectively latching the car means at various locations of the car means on the post opposite a selected one of said locking notches as the car means moves upward on said post; said pawl having an end directed at an angle upwardly toward said notched post edge when the pawl is in release position and said end being directed at an angle downwardly toward said notched post edge when the pawl is in reset position; said pawl being operative in reset position to latch said car means at any selected locking notch location during car movement upward on said post; said latch means automatically moving from reset to release position upon arrival of the car means at the upper end of the post with the pawl adjacent said release notch; said pawl being operative in release position at the upper end of the post to permit the car means to move freely downward on the post by gravity to the lower car position to locate said pawl adjacent said reset notch; and said pawl being moved from release to reset position as the car means moves upward from said lower car position.
Claim 21
Dependent Claim
321 words
Retriever construction for a dental saliva ejector hose including a post, the post having an edge formed with a series of notches including a release notch adjacent its top end, a reset notch adjacent its bottom end, and a plurality of spaced locking notches intermediate the release and reset notches; car means mounted for movement between upper and lower car positions on the post; pulley means mounted on the post and car means, said pulley means forming hose loop storage means extensible and retractable upon car movement on said post between upper and lower positions for a hose threaded in loops around said pulley means; a pawl loosely pivotally mounted on the car means movable between reset and release positions; said pawl and locking notches forming lock means for selectively latching the car means at various locations of the car means on the post opposite a selected one of said locking notches as the car means moves upward on said post; said pawl having an end directed at an angle upwardly toward said notched post edge when the pawl is in release position and said end being directed at an angle downwardly toward said notched post edge when the pawl is in reset position; said pawl being operative in reset position to latch said car means at any selected locking notch location during car movement upward on said post; said latch means automatically moving from reset to release position upon arrival of the car means at the upper end of the post with the pawl adjacent said release notch; said pawl being operative in release position at the upper end of the post to permit the car means to move freely downward on the post by gravity to the lower car position to locate said pawl adjacent said reset notch; and said pawl being moved from release to reset position as the car means moves upward from said lower car position.
Claim 22
Dependent Claim
22 words
The construction defined in claim 19 in which the release and reset notches have greater length and depth than the locking notches.
Claim 23
Dependent Claim
34 words
The construction defined in claim 19 in which the pulley means includes a pair of pulleys journalled in spaced relation on the car means one above and one below the loosely pivotally mounted pawl.
Claim 24
Dependent Claim
35 words
The construction defined in claim 19 in which the loosE pivotal mounting of the pawl on the car means includes a pin on the car means extending through an elongated slot formed in the pawl.
Claim 25
Dependent Claim
40 words
The construction defined in claim 19 in which the pawl end directed upwardly in release position and downwardly in reset position is pointed, and in which the pointed end is engageable with the edge of the post and notches therein.
Claim 26
Dependent Claim
16 words
The construction defined in claim 19 in which the pawl is normally biased to release position.
Claim 27
Dependent Claim
87 words
The construction defined in claim 19 in which a pair of locator rolls is mounted in spaced relation on the car means, in which the loose pivotal mounting of the pawl on the car means is located between said locator rolls, in which the pawl end directed upwardly in release position and downwardly in reset position is pointed, and in which the locator rolls engage and roll on the notched post edge to determine the location of the pointed end with respect to the notched post edge.
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) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |