US3763939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible impact device for driving holes in earth
Assignee: Individual
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Filing: 1971-11-01
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Granted: 1973-10-09
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Expires: 1991-11-01
Abstract
Abstract A pneumatically operated impact action self-propelled reversible device for driving holes in the earth by compacting the soil around the hole being made includes a housing having a pointed driving end portion and a rear end portion. The impact member is reciprocated interiorly of the housing in operation of the mechanism under the action of compressed air to deliver successive impacts upon the housing. An air distributing mechanism including an air supply sleeve associated with the impact member and connected with an air conduit member is provided to control the supply of air to front and rear working chambers within the housing.
Inventors
- 👤 B Sudnishnikov
- 👤 K Tupitsyn
- 👤 V Klimashko
- 👤 A Kostylev
- 👤 K Gurkov
- 👤 V Plavskikh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:40
CPC Classifications
E; E21; E21B; E21B4/00; E21B4/06; E21B4/14; E21B4/145
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
132 words
A pneumatically operated impact-action self-propelled device for driving holes in the earth, comprising: a housing having a driving end portion and a rear end portion; an impact member mounted for reciprocation within said housing and defining therewith working chambers of variable volume, said impact member adapted to reciprocate and deliver impacts to one of the ends of said housing during a distribution of compressed air to said working chambers; air supply means rotatably mounted and threadably connected to said housing for longitudinal movement therein, said longitudinal movement adapted to effect a modification in the distribution of compressed air to said working chambers and thereby change the delivery of impacts to the other end of said housing; and air delivering passages connecting said air supply means to said working chambers of variable volume.
Claim 2
Dependent Claim
132 words
A pneumatically operated impact-action self-propelled device for driving holes in the earth, comprising: a housing having a driving end portion and a rear end portion; an impact member mounted for reciprocation within said housing and defining therewith working chambers of variable volume, said impact member adapted to reciprocate and deliver impacts to one of the ends of said housing during a distribution of compressed air to said working chambers; air supply means rotatably mounted and threadably connected to said housing for longitudinal movement therein, said longitudinal movement adapted to effect a modification in the distribution of compressed air to said working chambers and thereby change the delivery of impacts to the other end of said housing; and air delivering passages connecting said air supply means to said working chambers of variable volume.
Claim 3
Dependent Claim
214 words
In a pneumatically operated impact-action self-propelled device for driving holes in the earth having a housing with a driving end portion and a rear end portion, an impact member adapted for reciprocation within the interior of said housing for deliverying impacts at one end thereof during operation of the device and defining there with working chambers of variable volume, air delivering passages connecting said working chambers of variable volume to air conduit means; wherein the improvement comprises: air distribution means adapted to modify the distribution pattern of compressed air to said working chambers and thereby change the delivery of impacts at one end of saId housing to said other end, said air distribution means including an air supply sleeve fixedly secured to said air conduit means to prevent relative rotational movement therebetween, said air supply sleeve cooperating with said impact member to supply reciprocation of said impact member, the distribution pattern of compressed air depending on the relative positions of said impact member and said air supply sleeve, said air supply sleeve being rotatably and threadably mounted to said housing for axial displacement therein whereby the position of said air supply sleeve with respect to said impact member can be changed by rotating said air conduit means at a remote position from said housing.
Claim 4
Dependent Claim
214 words
In a pneumatically operated impact-action self-propelled device for driving holes in the earth having a housing with a driving end portion and a rear end portion, an impact member adapted for reciprocation within the interior of said housing for deliverying impacts at one end thereof during operation of the device and defining there with working chambers of variable volume, air delivering passages connecting said working chambers of variable volume to air conduit means; wherein the improvement comprises: air distribution means adapted to modify the distribution pattern of compressed air to said working chambers and thereby change the delivery of impacts at one end of saId housing to said other end, said air distribution means including an air supply sleeve fixedly secured to said air conduit means to prevent relative rotational movement therebetween, said air supply sleeve cooperating with said impact member to supply reciprocation of said impact member, the distribution pattern of compressed air depending on the relative positions of said impact member and said air supply sleeve, said air supply sleeve being rotatably and threadably mounted to said housing for axial displacement therein whereby the position of said air supply sleeve with respect to said impact member can be changed by rotating said air conduit means at a remote position from said housing.
Claim 5
Dependent Claim
213 words
A pneumatically operated impact-action self-propelled reversible device for driving holes in the earth, comprising: a housing having a generally pointed driving end portion, and a rear end portion; an impact member adapted for reciprocation interiorly of said housing and defining therewith working chambers of variable volume, said impact member delivering upon said housing repeating impacts, as said impact member is reciprocated there-inside in operation of said device; air conduit means; a sleeve connected with said air conduit means in a manner to prevent a relative rotational movement therebetween, said sleeve cooperating with said impact member and being adapted to supply compressed air into said chambers for effecting reciprocation of said impact member; passage means in said impact member for communication of air to certain of said chambers, the opening and closing of said passage means determining a forward or rearward direction of movement of the device and depending on the relative positions of said impact member and said sleeve; said compressed air supply sleeve being threadably secured to said housing proximate said rear end portion for axial displacement within said housing when said air conduit means is rotated whereby the position of said sleeve with respect to said impact member can be changed to effect a reversal in the direction of the mechanism.
Claim 6
Dependent Claim
213 words
A pneumatically operated impact-action self-propelled reversible device for driving holes in the earth, comprising: a housing having a generally pointed driving end portion, and a rear end portion; an impact member adapted for reciprocation interiorly of said housing and defining therewith working chambers of variable volume, said impact member delivering upon said housing repeating impacts, as said impact member is reciprocated there-inside in operation of said device; air conduit means; a sleeve connected with said air conduit means in a manner to prevent a relative rotational movement therebetween, said sleeve cooperating with said impact member and being adapted to supply compressed air into said chambers for effecting reciprocation of said impact member; passage means in said impact member for communication of air to certain of said chambers, the opening and closing of said passage means determining a forward or rearward direction of movement of the device and depending on the relative positions of said impact member and said sleeve; said compressed air supply sleeve being threadably secured to said housing proximate said rear end portion for axial displacement within said housing when said air conduit means is rotated whereby the position of said sleeve with respect to said impact member can be changed to effect a reversal in the direction of the mechanism.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |