Patent US3796448A successfully refreshed from Google Patents.
US3796448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick acting connector for telescopically joined pipe ends and the like
Assignee: Acker Drill Co Inc
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Filing: 1972-09-15
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Granted: 1974-03-12
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Expires: 1992-09-15
Abstract
Abstract A quick connect and release locking device for telescopically joined together tubular sections or telescopically joined together tubular auger socket and tubular auger shank ends is provided. Spring pressed pins mounted in the wall of the socket extend into recesses in the tubular wall of the auger shank. Cam surfaces on the inner ends of the spring pressed pins moved by the end of the shank cause the pins to move outwardly thereby allowing the telescoping together of the socket and shank until the recesses in the shank wall receive the inner ends of the pins. The outer ends of the spring pressed pins have a reduced neck portion. The pins may be moved out by prying with a screw driver or a claw hammer. A special tool is also provided that has arms with bifurcated ends that fit over the reduced neck portions of the pins to move the pins radially outward against their springs. The operating tool has a main body with a circular-like recess at its center and oppositely disposed radially extending bores that receive plungers attached to the arms that are held together by a spring. A circular-like plate is received in the recess and it has cam surfaces that move the pins out and likewise permit them to move in. An axial shaft mounts the circular plate to the main body and an operating handle is attached to the axial shaft. Suitable slots are provided in the main body that receive and guide pins extending transversely through the plungers that hold the plungers in their bores.
Inventors
- 👤 J Ringkamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:54
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/046; E21B17/0465; F; F16; F16B; F16B7/00; F16B7/04; F16B7/0406; F16B7/0413; F16L; F16L37/00; F16L37/08; F16L37/084; F16L37/086; F16B2200/00; F16B2200/10; Y; Y10; Y10T; Y10T403/00; Y10T403/50; Y10T403/55
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
395 words
A locking apparatus in combination with a first and second tublar member for detachably securing together said first and second tubular members, said first tubular member telescopically receiving therein the end of said second tubular member, said first tubular member having a transverse bore through its wall, said second tubular member having a recess portion extending in from a peripheral face portion and in alignment with said transverse bore, an annular cap member received in said transverse bore through the wall of said first tubular member, and having a cylindrical spring pocket recess extending from a shoulder at its outer end to the inner end of the cap and oppositely disposed elongated axially extending slots in the wall of said cap member, a pin member received in said annular cap member and having an inner end portion with a tapered end face and a securing pin receiving bore extending throUgh a diameter thereof, a reduced in diameter spring receiving portion adjacent the inner end portion and forming a shoulder therewith and an outer protruding end with a reduced neck portion joining the spring receiving portion whereby there is an enlarged outer end and shoulder portion formed between it and the reduced neck portion, an elongated compression spring received over the spring receiving portion of the pin and seating against said shoulder and received in the spring pocket recess of the annular cap as the pin is pushed into the cap from its inner end to compress said spring, as its outer end seats against said shoulder in the cap, a securing pin receiving in said elongated slots in the cap and in said securing pin bore with its ends protruding in said axially extending elongated slots in the cap, said tapered end face portion on the inner end of the pin riding against the end of the second tubular member as the second tubular member is telescopically inserted into the end of the first tubular member thereby moving the pin radially outward and compressing said spring until the spring pressed pin is received in the recess portion of the second tubular member thereby locking said two tubular members together, said reduced neck and shoulder portions at the protruding outer end of the pin being adapted to receive a pulling force to unseat said pin from said recess whereby the tubular members may be slid apart.
Claim 2
Dependent Claim
395 words
A locking apparatus in combination with a first and second tublar member for detachably securing together said first and second tubular members, said first tubular member telescopically receiving therein the end of said second tubular member, said first tubular member having a transverse bore through its wall, said second tubular member having a recess portion extending in from a peripheral face portion and in alignment with said transverse bore, an annular cap member received in said transverse bore through the wall of said first tubular member, and having a cylindrical spring pocket recess extending from a shoulder at its outer end to the inner end of the cap and oppositely disposed elongated axially extending slots in the wall of said cap member, a pin member received in said annular cap member and having an inner end portion with a tapered end face and a securing pin receiving bore extending throUgh a diameter thereof, a reduced in diameter spring receiving portion adjacent the inner end portion and forming a shoulder therewith and an outer protruding end with a reduced neck portion joining the spring receiving portion whereby there is an enlarged outer end and shoulder portion formed between it and the reduced neck portion, an elongated compression spring received over the spring receiving portion of the pin and seating against said shoulder and received in the spring pocket recess of the annular cap as the pin is pushed into the cap from its inner end to compress said spring, as its outer end seats against said shoulder in the cap, a securing pin receiving in said elongated slots in the cap and in said securing pin bore with its ends protruding in said axially extending elongated slots in the cap, said tapered end face portion on the inner end of the pin riding against the end of the second tubular member as the second tubular member is telescopically inserted into the end of the first tubular member thereby moving the pin radially outward and compressing said spring until the spring pressed pin is received in the recess portion of the second tubular member thereby locking said two tubular members together, said reduced neck and shoulder portions at the protruding outer end of the pin being adapted to receive a pulling force to unseat said pin from said recess whereby the tubular members may be slid apart.
Claim 3
Dependent Claim
27 words
The locking apparatus according to claim 1 wherein the annular cap is externally threaded for threadedly being received in a threaded bore of the first tubular member.
Claim 4
Dependent Claim
378 words
In combination with two auger sections each having a tubular shaft and a socket end and a shank end, said socket end having a transverse bore through its wall, said shank end on one section having a recessed portion extending in from a peripheral face portion and in alignment with said transverse bore in the socket end of a section assembled to said shank end section, said socket and shank ends having a cooperating drive means, an annular cap member received in said transverse bore through the wall of said socket end and having a cylindrical spring pocket recess extending from a shoulder portion at its outer end to the inner end of the cap and oppositely disposed elongated axially extending slots in the wall of said cap member, a pin member received in said annular cap member and having an inner end portion with a tapered end face and a securing pin receiving bore extending through a diameter thereof, a reduced in diameter spring receiving portion adjacent the inner end portion and forming a shoulder therewith and an outer end protruding out beyond said cap and having means thereon for applying a pulling force to retract same against said spring, an elongated compression spring received over the spring receiving portion of each pin and seating against said shoulder at one end and received in the spring pocket recess of the annular cap as the pin is pushed through the inner end of the cap to compress said spring as its outer end seats against said shoulder in the cap, and a securing pin received in said elongated slots in the cap and in said securing pin bore with its ends protruding in said axially extending elongated slots in the cap, said tapered end face portion on the inner end of the pin riding against the end of the shank end as the shank end is telescopically received in the socket end thereby moving the pin radially outward and compressing said spring until the spring pressed pin is received in the recess portion of the socket end thereby locking said two auger sections together, said outer end of the pin receiving a pulling force to retract said pin to allow the two auger sections to be pulled apart.
Claim 5
Dependent Claim
378 words
In combination with two auger sections each having a tubular shaft and a socket end and a shank end, said socket end having a transverse bore through its wall, said shank end on one section having a recessed portion extending in from a peripheral face portion and in alignment with said transverse bore in the socket end of a section assembled to said shank end section, said socket and shank ends having a cooperating drive means, an annular cap member received in said transverse bore through the wall of said socket end and having a cylindrical spring pocket recess extending from a shoulder portion at its outer end to the inner end of the cap and oppositely disposed elongated axially extending slots in the wall of said cap member, a pin member received in said annular cap member and having an inner end portion with a tapered end face and a securing pin receiving bore extending through a diameter thereof, a reduced in diameter spring receiving portion adjacent the inner end portion and forming a shoulder therewith and an outer end protruding out beyond said cap and having means thereon for applying a pulling force to retract same against said spring, an elongated compression spring received over the spring receiving portion of each pin and seating against said shoulder at one end and received in the spring pocket recess of the annular cap as the pin is pushed through the inner end of the cap to compress said spring as its outer end seats against said shoulder in the cap, and a securing pin received in said elongated slots in the cap and in said securing pin bore with its ends protruding in said axially extending elongated slots in the cap, said tapered end face portion on the inner end of the pin riding against the end of the shank end as the shank end is telescopically received in the socket end thereby moving the pin radially outward and compressing said spring until the spring pressed pin is received in the recess portion of the socket end thereby locking said two auger sections together, said outer end of the pin receiving a pulling force to retract said pin to allow the two auger sections to be pulled apart.
Claim 6
Dependent Claim
88 words
The apparatus of claim 3 wherein said socket end of the tubular shaft has two oppositely disposed transverse bores and each has an annular cap member with a pin member, spring and securing pin therein and wherein each outer protruding end of piN has a reduced neck portion thereby leaving an enlarged outer end with a shoulder portion, said reduced neck and shoulder portions serving as the means thereon for applying a pulling force to retract the pin thereby allowing the two auger sections to be pulled apart.
Claim 7
Dependent Claim
40 words
The apparatus of claim 4 wherein the oppositely disposed transversely extending bores in the pocket end of the tubular shaft are threaded and the annular cap members have external threads whereby the caps are threadedly received in said threaded bores.
Claim 8
Dependent Claim
20 words
The apparatus of claim 3 including O-ring seal means positioned between said socket and adjacent said shank end received therein.
Claim 9
Dependent Claim
54 words
The apparatus of claim 3 wherein said socket end has an annular recess in its inner wall positioned between the inner end of said socket and said transverse bore through its wall and an O-ring seal received in said annular recess and forming a seal with the shank end received in said socket end.
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) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |