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US4108176A Expired / Lapsed US ⏱️ 0.0 years remaining

Automatic injecting apparatus

Assignee: STERWIN LABORATORIES Inc 2315 SANDERS ROAD NORTHBROOK IL A CORP OF DE
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Filing: 1977-02-25
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Granted: 1978-08-22
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Expires: 1997-02-25
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Abstract

Abstract An automatic injection device for small animals. The device comprises a work plate on which an animal to be injected can be positioned, a syringe mounted on the opposite side of the work plate from the side on which the animal to be injected is positioned during use of the device, first means for moving the syringe back and forth between a first position in which the syringe needle is entirely withdrawn on said opposite side of the work plate and a second position in which the syringe needle protrudes through an aperture in the work plate, and second means for detecting the presence of an animal to be injected in position on the work plate and for activating the first means. The first means comprises a single-action pneumatic motor and means for retaining the syringe in its second position while the mounting of the syringe is adjusted. Means for venting an accidental increase in pressure in the pneumatic supply, means for indicating the completion of a preset number of injections, means permitting the quick replacement of the syringe, and a transparent valve plate permitting the user to view at least a portion of the second means are provided.

Inventors

  • 👤 Carl W. Walden

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 18:52
CPC Classifications
A; A61; A61D; A61D1/00; A61D1/02; A61D1/025; Y; Y10; Y10S; Y10S128/00; Y10S128/01

Claims Analysis

Total Claims: 50
Claim 1
Independent Claim 186 words
In an automatic injection device comprising: (a) a work plate on which an animal to be injected can be positioned, said work plate having an aperture therein; (b) a syringe mounted on the opposite side of said work plate from the side on which the animal to be injected is positioned during use of the device; (c) first means for moving said syringe back and forth between a first position wherein said syringe is entirely withdrawn on said opposite side of said work plate and a second position wherein the needle of said syringe protrudes through the aperture in said work plate; and (d) second means for detecting the presence of an animal to be injected in position on said work plate and for activating said first means, the improvement wherein said first means comprises: (e) a fluid motor; (f) third means for filtering the fluid input to said fluid motor; (g) fourth means for controlling the pressure of the fluid input to said fluid motor; and (h) fifth means for venting an accidental increase in the pressure of the fluid input to said fourth means.
Claim 2
Dependent Claim 186 words
In an automatic injection device comprising: (a) a work plate on which an animal to be injected can be positioned, said work plate having an aperture therein; (b) a syringe mounted on the opposite side of said work plate from the side on which the animal to be injected is positioned during use of the device; (c) first means for moving said syringe back and forth between a first position wherein said syringe is entirely withdrawn on said opposite side of said work plate and a second position wherein the needle of said syringe protrudes through the aperture in said work plate; and (d) second means for detecting the presence of an animal to be injected in position on said work plate and for activating said first means, the improvement wherein said first means comprises: (e) a fluid motor; (f) third means for filtering the fluid input to said fluid motor; (g) fourth means for controlling the pressure of the fluid input to said fluid motor; and (h) fifth means for venting an accidental increase in the pressure of the fluid input to said fourth means.
Claim 3
Dependent Claim 25 words
In a device as recited in claim 1, the further improvement wherein: said first means comprises means for retaining said syringe in its second position.
Claim 4
Dependent Claim 41 words
In a device as recited in claim 2, the further improvement comprising: sixth means for adjusting the amount by which the needle of said syringe protrudes through the aperture in said work plate when said syringe is in its second position.
Claim 5
Dependent Claim 38 words
A device as recited in claim 3, wherein said sixth means comprises: a first slotted block on which said first means is carried and a plurality of bolts which pass through the slots in said first slotted block.
Claim 6
Dependent Claim 41 words
In a device as recited in claim 1, the further improvement comprising: sixth means for adjusting the amount by which the needle of said syringe protrudes through the aperture in said work plate when said syringe is in its second position.
Claim 7
Dependent Claim 38 words
A device as recited in claim 5, wherein said sixth means comprises: a first slotted block on which said first means is carried and a plurality of bolts which pass through the slots in said first slotted block.
Claim 8
Dependent Claim 35 words
In a device as recited in claim 5, the further improvement comprising: seventh means for adjusting the position of said syringe in the horizontal plane and in the direction perpendicular to its direction of motion.
Claim 9
Dependent Claim 38 words
A device as recited in claim 7, wherein said seventh means comprises: a second slotted block on which said first means is carried and a plurality of bolts which pass through the slots in said second slotted block.
Claim 10
Dependent Claim 35 words
In a device as recited in claim 1, the further improvement comprising: sixth means for adjusting the position of said syringe in the horizontal plane and in the direction perpendicular to its direction of action.
Claim 11
Dependent Claim 38 words
A device as recited in claim 9, wherein said sixth means comprises: a first slotted block on which said first means is carried and a plurality of bolts which pass through the slots in said first slotted block.
Claim 12
Dependent Claim 74 words
In a device as recited in claim 1, the further improvement wherein: said second means comprise a microvalve carried on said work plate on the same side as the animal to be injected is positioned during use of the device and a housing carried by said work plate and containing said microvalve, at least a portion of said housing being transparent, whereby the user of the device can view said microvalve through said housing.
Claim 13
Dependent Claim 154 words
In a device as recited in claim 11, the further improvement wherein: (e) said syringe is journaled for rapid translational movement in an open-topped slot in a block mounted on said opposite side of said work plate and (f) said syringe is connected to said first means by means comprising: (i) a syringe coupling attachment which has a longitudinal open-topped slot and a transverse open-topped slot intersecting the longitudinal open-topped slot, said syringe coupling attachment being carried by said first means, and (ii) a shaft carried by said syringe and having a collar, said shaft being sized and positioned to fit into the longitudinal open-topped slot in said syringe coupling attachment and said collar being sized and positioned to fit into the transverse open-topped slot in said syringe coupling attachment, whereby said syringe and said shaft may be simply lifted in and out of place in said block and said syringe coupling attachment, respectively.
Claim 14
Dependent Claim 51 words
In a device as recited in claim 12, the further improvement wherein: said block is made out of a resilient material and the width of the open-topped slot therein is less than the width of said syringe, whereby said syringe is held against vertical motion by the resiliency of said block.
Claim 15
Dependent Claim 25 words
In a device as recited in claim 12, the further improvement wherein: said first means comprises means for retaining said syringe in its second position.
Claim 16
Dependent Claim 154 words
In a device as recited in claim 1, the further improvement wherein: (e) said syringe is journaled for rapid translational movement in an open-topped slot in a block mounted on said opposite side of said work plate and (f) said syringe is connected to said first means by means comprising: (i) a syringe coupling attachment which has a longitudinal open-topped slot and a transverse open-topped slot intersecting the longitudinal open-topped slot, said syringe coupling attachment being carried by said first means, and (ii) a shaft carried by said syringe and having a collar, said shaft being sized and positioned to fit into the longitudinal open-topped slot in said syringe coupling attachment and said collar being sized and positioned to fit into the transverse open-topped slot in said syringe coupling attachment, whereby said syringe and said shaft may be simply lifted in and out of place in said block and said syringe coupling attachment, respectively.
Claim 17
Dependent Claim 51 words
In a device as recited in claim 15, the further improvement wherein: said block is made out of a resilient material and the width of the open-topped slot therein is less than the width of said syringe, whereby said syringe is held against vertical motion by the resiliency of said block.
Claim 18
Dependent Claim 26 words
In a device as recited in claim 1, the further improvement comprising: sixth means for counting the number of times said first means has been actuated.
Claim 19
Dependent Claim 23 words
A device as recited in claim 17, wherein said sixth means comprising: seventh means for counting down from a preset number to zero.
Claim 20
Dependent Claim 23 words
A device as recited in claim 18, and further comprising: means for providing an audible signal when said seventh means has reached zero.
Claim 21
Dependent Claim 25 words
In a device as recited in claim 18, the further improvement comprising: means for shutting off the device when said seventh means has reached zero.
Claim 22
Dependent Claim 19 words
A device as recited in claim 18, wherein: said sixth means comprises eighth means for counting up from zero.
Claim 23
Dependent Claim 19 words
A device as recited in claim 17, wherein said sixth means comprises: seventh means for counting up from zero.
Claim 24
Dependent Claim 193 words
In an automatic injection device comprising: (a) a work plate on which an animal to be injected can be positioned, said work plate having an aperture therein; (b) a syringe mounted on the opposite side of said work plate from the side on which the animal to be injected is positioned during use of the device; (c) first means for moving said syringe back and forth between a first position wherein said syringe is entirely withdrawn on said opposite side of said work plate and a second position wherein the needle of said syringe protrudes through the aperture in said work plate; and (d) second means for detecting the presence of an animal to be injected in position on said work plate and for activating said first means, the improvement wherein: said second means comprise a microvalve carried on said work plate on the same side as the animal to be injected is positioned during use of the device and a housing carried by said work plate and containing said microvalve, at least a portion of said housing being transparent, whereby the user of the device can view said microvalve through said housing.
Claim 25
Dependent Claim 193 words
In an automatic injection device comprising: (a) a work plate on which an animal to be injected can be positioned, said work plate having an aperture therein; (b) a syringe mounted on the opposite side of said work plate from the side on which the animal to be injected is positioned during use of the device; (c) first means for moving said syringe back and forth between a first position wherein said syringe is entirely withdrawn on said opposite side of said work plate and a second position wherein the needle of said syringe protrudes through the aperture in said work plate; and (d) second means for detecting the presence of an animal to be injected in position on said work plate and for activating said first means, the improvement wherein: said second means comprise a microvalve carried on said work plate on the same side as the animal to be injected is positioned during use of the device and a housing carried by said work plate and containing said microvalve, at least a portion of said housing being transparent, whereby the user of the device can view said microvalve through said housing.
Claim 26
Dependent Claim 273 words
In an automatic injection device comprising: (a) a work plate on which an animal to be injected can be positioned, said work plate having an aperture therein; (b) a syringe mounted on the opposite side of said work plate from the side on which the animal to be injected is positioned during use of the device; (c) first means for moving said syringe back and forth between a first position wherein said syringe is entirely withdrawn on said opposite side of said work plate and a second position wherein the needle of said syringe protrudes through the aperture in said work plate; and (d) second means for detecting the presence of an animal to be injected in position on said work plate and for activating said first means, the improvement wherein: (e) said syringe is journaled for rapid translational movement in an open-topped slot in a block mounted on said opposite side of said work plate and (f) said syringe is connected to said first means by means comprising: (i) a syringe coupling attachment which has a longitudinal open-topped slot and a transverse open-topped slot intersecting the longitudinal open-topped slot, said syringe coupling attachment being carried by said first means, and (ii) a shaft carried by said syringe and having a collar, said shaft being sized and positioned to fit into the longitudinal open-topped slot in said syringe coupling attachment and said collar being sized and positioned to fit into the transverse open-topped slot in said syringe coupling attachment, whereby said syringe and said shaft may be simply lifted in and out of place in said block and said syringe coupling attachment, respectively.
Claim 27
Dependent Claim 273 words
In an automatic injection device comprising: (a) a work plate on which an animal to be injected can be positioned, said work plate having an aperture therein; (b) a syringe mounted on the opposite side of said work plate from the side on which the animal to be injected is positioned during use of the device; (c) first means for moving said syringe back and forth between a first position wherein said syringe is entirely withdrawn on said opposite side of said work plate and a second position wherein the needle of said syringe protrudes through the aperture in said work plate; and (d) second means for detecting the presence of an animal to be injected in position on said work plate and for activating said first means, the improvement wherein: (e) said syringe is journaled for rapid translational movement in an open-topped slot in a block mounted on said opposite side of said work plate and (f) said syringe is connected to said first means by means comprising: (i) a syringe coupling attachment which has a longitudinal open-topped slot and a transverse open-topped slot intersecting the longitudinal open-topped slot, said syringe coupling attachment being carried by said first means, and (ii) a shaft carried by said syringe and having a collar, said shaft being sized and positioned to fit into the longitudinal open-topped slot in said syringe coupling attachment and said collar being sized and positioned to fit into the transverse open-topped slot in said syringe coupling attachment, whereby said syringe and said shaft may be simply lifted in and out of place in said block and said syringe coupling attachment, respectively.
Claim 28
Dependent Claim 181 words
In an automatic injection device comprising: (a) a work plate on which an animal to be injected can be positioned, said work plate having an aperture therein; (b) a syringe mounted on the opposite side of said work plate from the side on which the animal to be injected is positioned during use of the device; (c) first means for moving said syringe back and forth between a first position wherein said syringe is entirely withdrawn on said opposite side of said work plate and a second position wherein the needle of said syringe protrudes through the aperture in said work plate; and (d) second means for detecting the presence of an animal to be injected in position on said work plate and for activating said first means, the improvement wherein said first means comprise: (e) third means for producing a short, phased motion of said syringe regardless of how long said second means detects the presence of an animal to be injected in position on said work plate; and (f) fourth means for retaining said syringe in its second position.
Claim 29
Dependent Claim 181 words
In an automatic injection device comprising: (a) a work plate on which an animal to be injected can be positioned, said work plate having an aperture therein; (b) a syringe mounted on the opposite side of said work plate from the side on which the animal to be injected is positioned during use of the device; (c) first means for moving said syringe back and forth between a first position wherein said syringe is entirely withdrawn on said opposite side of said work plate and a second position wherein the needle of said syringe protrudes through the aperture in said work plate; and (d) second means for detecting the presence of an animal to be injected in position on said work plate and for activating said first means, the improvement wherein said first means comprise: (e) third means for producing a short, phased motion of said syringe regardless of how long said second means detects the presence of an animal to be injected in position on said work plate; and (f) fourth means for retaining said syringe in its second position.
Claim 30
Dependent Claim 167 words
In an automatic injection device comprising: (a) a work plate on which an animal to be injected can be positioned, said work plate having an aperture therein; (b) a syringe mounted on the opposite side of said work plate from the side on which the animal to be injected is positioned during use of the device; (c) first means for moving said syringe back and forth between a first position wherein said syringe is entirely withdrawn on said opposite side of said work plate and a second position wherein the needle of said syringe protrudes through the aperture in said work plate; and (d) second means for detecting the presence of an animal to be injected in position on said work plate and for activating said first means, the improvement wherein said first means comprises: (e) a fluid motor; (f) third means for filtering the fluid input to said fluid motor; and (g) fourth means for controlling the pressure of the fluid input to said fluid motor.
Claim 31
Dependent Claim 167 words
In an automatic injection device comprising: (a) a work plate on which an animal to be injected can be positioned, said work plate having an aperture therein; (b) a syringe mounted on the opposite side of said work plate from the side on which the animal to be injected is positioned during use of the device; (c) first means for moving said syringe back and forth between a first position wherein said syringe is entirely withdrawn on said opposite side of said work plate and a second position wherein the needle of said syringe protrudes through the aperture in said work plate; and (d) second means for detecting the presence of an animal to be injected in position on said work plate and for activating said first means, the improvement wherein said first means comprises: (e) a fluid motor; (f) third means for filtering the fluid input to said fluid motor; and (g) fourth means for controlling the pressure of the fluid input to said fluid motor.
Claim 32
Dependent Claim 242 words
In an automatic injection device comprising: (a) a work plate on which an animal to be injected can be positioned, said work plate having an aperture therein; (b) a syringe mounted on the opposite side of said work plate from the side on which the animal to be injected is positioned during used of the device; (c) first means for moving said syringe back and forth between a first position wherein said syringe is entirely withdrawn on said opposite side of said work plate and a second position wherein the needle of said syringe protrudes through the aperture in said work plate; and (d) second means for detecting the presence of an animal to be injected in position on said work plate and for activating said first means, the improvement wherein: (e) said syringe is journaled for rapid translational movement in a slot on a block mounted on said opposite side of said work plate; and (f) said syringe is connected to said first means by means comprising: (i) a syringe coupling attachment which has an open recess therein, said syringe coupling attachment being carried by said first means, and (ii) a shaft carried by said syringe and having an enlargement thereon, said enlargement being sized and positioned to fit into the recess in said syringe coupling attachment, whereby said syringe and said shaft may be simply moved in and out of place in said block and said syringe coupling attachment, respectively.
Claim 33
Dependent Claim 242 words
In an automatic injection device comprising: (a) a work plate on which an animal to be injected can be positioned, said work plate having an aperture therein; (b) a syringe mounted on the opposite side of said work plate from the side on which the animal to be injected is positioned during used of the device; (c) first means for moving said syringe back and forth between a first position wherein said syringe is entirely withdrawn on said opposite side of said work plate and a second position wherein the needle of said syringe protrudes through the aperture in said work plate; and (d) second means for detecting the presence of an animal to be injected in position on said work plate and for activating said first means, the improvement wherein: (e) said syringe is journaled for rapid translational movement in a slot on a block mounted on said opposite side of said work plate; and (f) said syringe is connected to said first means by means comprising: (i) a syringe coupling attachment which has an open recess therein, said syringe coupling attachment being carried by said first means, and (ii) a shaft carried by said syringe and having an enlargement thereon, said enlargement being sized and positioned to fit into the recess in said syringe coupling attachment, whereby said syringe and said shaft may be simply moved in and out of place in said block and said syringe coupling attachment, respectively.
Claim 34
Dependent Claim 47 words
In a device as recited in claim 27, the further improvement wherein: said block is made out of a resilient material and the width of the slot therein is less than the width of said syringe, whereby said syringe is held by the resiliency of said block.
Claim 35
Dependent Claim 56 words
In a device as recited in claim 27, the further improvement wherein: (a) the slot in said block is open-topped, and (b) the recess in said syringe coupling attachment is upwardly open, whereby said syringe and said shaft may be simply lifted in and out of place in said block and said syringe coupling attachment, respectively.
Claim 36
Dependent Claim 240 words
In an automatic injection device comprising: (a) a work plate on which an animal to be injected can be positioned, said work plate having an aperture therein; (b) a syringe mounted on the opposite side of said work plate from the side on which the animal to be injected is positioned during use of the device; (c) first means for moving said syringe back and forth between a first position wherein said syringe is entirely withdrawn on said opposite side of said work plate and a second position wherein the needle of said syringe protrudes through the aperture in said work plate; and (d) second means for detecting the presence of an animal to be injected in position on said work plate and for activating said first means, the improvement wherein: (e) said syringe is journaled for rapid tranlational movement in a slot in a block mounted on said opposite side of said work plate; and (f) said syringe is connected to said first means by means comprising: (i) a coupling attachment carried by one of said syringe and said first means, said coupling attachment having an open recess therein; and (ii) a shaft carried by the other of said syringe and said first means, said shaft having an enlargement thereon which is sized and positioned to fit into the recess in said coupling attachment, whereby said syringe may be simply moved in and out of place in said block.
Claim 37
Dependent Claim 240 words
In an automatic injection device comprising: (a) a work plate on which an animal to be injected can be positioned, said work plate having an aperture therein; (b) a syringe mounted on the opposite side of said work plate from the side on which the animal to be injected is positioned during use of the device; (c) first means for moving said syringe back and forth between a first position wherein said syringe is entirely withdrawn on said opposite side of said work plate and a second position wherein the needle of said syringe protrudes through the aperture in said work plate; and (d) second means for detecting the presence of an animal to be injected in position on said work plate and for activating said first means, the improvement wherein: (e) said syringe is journaled for rapid tranlational movement in a slot in a block mounted on said opposite side of said work plate; and (f) said syringe is connected to said first means by means comprising: (i) a coupling attachment carried by one of said syringe and said first means, said coupling attachment having an open recess therein; and (ii) a shaft carried by the other of said syringe and said first means, said shaft having an enlargement thereon which is sized and positioned to fit into the recess in said coupling attachment, whereby said syringe may be simply moved in and out of place in said block.
Claim 38
Dependent Claim 47 words
In a device as recited in claim 30, the further improvement wherein: said block is made out of a resilient material and the width of the slot therein is less than the width of said syringe, whereby said syringe is held by the resiliency of said block.
Claim 39
Dependent Claim 46 words
In a device as recited in claim 30, the further improvement wherein: (a) the slot in said block is open-topped, and (b) the recess in said coupling attachment is upwardly open, whereby said syringe may be simply lifted in and out of place in said block.
Claim 40
Dependent Claim 202 words
In an automatic injection device comprising: (a) a work plate on which an animal to be injected can be positioned, said work plate having an aperture therein; (b) a syringe mounted on the opposite side of said work plate from the side on which the animal to be injected is positioned during use of the device; (c) first means for moving said syringe back and forth between a first position wherein said syringe is entirely withdrawn on said opposite side of said work plate and a second position wherein the needle of said syringe protrudes through the aperture in said work plate; and (d) second means for detecting the presence of an animal to be injected in position on said work plate and for activating said first means, the improvement comprising: (e) a first block on which said first means is carried, said first block having slots therein parallel to the direction of motion of said syringe; and (f) a plurality of bolts which pass through the slots in said first slotted block, whereby the amount by which the needle of said syringe protrudes through the aperture in said work plate when said syringe is in its second position can be adjusted.
Claim 41
Dependent Claim 202 words
In an automatic injection device comprising: (a) a work plate on which an animal to be injected can be positioned, said work plate having an aperture therein; (b) a syringe mounted on the opposite side of said work plate from the side on which the animal to be injected is positioned during use of the device; (c) first means for moving said syringe back and forth between a first position wherein said syringe is entirely withdrawn on said opposite side of said work plate and a second position wherein the needle of said syringe protrudes through the aperture in said work plate; and (d) second means for detecting the presence of an animal to be injected in position on said work plate and for activating said first means, the improvement comprising: (e) a first block on which said first means is carried, said first block having slots therein parallel to the direction of motion of said syringe; and (f) a plurality of bolts which pass through the slots in said first slotted block, whereby the amount by which the needle of said syringe protrudes through the aperture in said work plate when said syringe is in its second position can be adjusted.
Claim 42
Dependent Claim 35 words
In a device as recited in claim 33, the further improvement comprising third means for adjusting the position of said syringe in the horizontal plane and in the direction perpendicular to its direction of motion.
Claim 43
Dependent Claim 53 words
A device as recited in claim 34, wherein said third means comprises: (a) a second block on which said first means is carried, said second block having slots therein perpendicular to the direction of motion of said syringe; and (b) a plurality of bolts which pass through the slots in said second block.
Claim 44
Dependent Claim 196 words
In an automatic injection device comprising: (a) a work plate on which an animal to be injected can be positioned, said work plate having an aperture therein; (b) a syringe mounted on the opposite side of said work plate from the side on which the animal to be injected is positioned during use of the device; (c) first means for moving said syringe back and forth between a first position wherein said syringe is entirely withdrawn on said opposite side of said work plate and a second position wherein the needle of said syringe protrudes through the aperture in said work plate; and (d) second means for detecting the presence of an animal to be injected in position on said work plate and for activating said first means, the improvement comprising: (e) a first block on which said first means is carried, said first block having slots therein perpendicular to the direction of motion of said syringe; and (f) a plurality of bolts which pass through the slots in said first slotted block, whereby the position of said syringe is the horizontal plane and in the direction perpendicular to its direction of motion can be adjusted.
Claim 45
Dependent Claim 196 words
In an automatic injection device comprising: (a) a work plate on which an animal to be injected can be positioned, said work plate having an aperture therein; (b) a syringe mounted on the opposite side of said work plate from the side on which the animal to be injected is positioned during use of the device; (c) first means for moving said syringe back and forth between a first position wherein said syringe is entirely withdrawn on said opposite side of said work plate and a second position wherein the needle of said syringe protrudes through the aperture in said work plate; and (d) second means for detecting the presence of an animal to be injected in position on said work plate and for activating said first means, the improvement comprising: (e) a first block on which said first means is carried, said first block having slots therein perpendicular to the direction of motion of said syringe; and (f) a plurality of bolts which pass through the slots in said first slotted block, whereby the position of said syringe is the horizontal plane and in the direction perpendicular to its direction of motion can be adjusted.
Claim 46
Dependent Claim 41 words
In a device as recited in claim 36, the further improvement comprising third means for adjusting the amount by which the needle of said syringe protrudes through the aperture in said work plate when said syringe is in its second position.
Claim 47
Dependent Claim 199 words
In an automatic injection device comprising: (a) a work plate on which an animal to be injected can be positioned, said work plate having an aperture therein; (b) a syringe mounted on the opposite side of said work plate from the side on which the animal to be injected is positioned during use of the device; (c) first means for moving said syringe back and forth between a first position wherein said syringe is entirely withdrawn on said opposite side of said work plate and a second position wherein the needle of said syringe protrudes through the aperture in said work plate; and (d) second means for detecting the presence of an animal to be injected in position on said work plate and for activating said first means, the improvement wherein: (e) said syringe is journaled for rapid translational movement in an open-topped slot in a block mounted on said opposite side of said work plate; (f) said block is made out of a resilient material; and (g) the width of the open-topped slot in said block is less than the width of said syringe, whereby said syringe is held against vertical motion by the resiliency of said block.
Claim 48
Dependent Claim 199 words
In an automatic injection device comprising: (a) a work plate on which an animal to be injected can be positioned, said work plate having an aperture therein; (b) a syringe mounted on the opposite side of said work plate from the side on which the animal to be injected is positioned during use of the device; (c) first means for moving said syringe back and forth between a first position wherein said syringe is entirely withdrawn on said opposite side of said work plate and a second position wherein the needle of said syringe protrudes through the aperture in said work plate; and (d) second means for detecting the presence of an animal to be injected in position on said work plate and for activating said first means, the improvement wherein: (e) said syringe is journaled for rapid translational movement in an open-topped slot in a block mounted on said opposite side of said work plate; (f) said block is made out of a resilient material; and (g) the width of the open-topped slot in said block is less than the width of said syringe, whereby said syringe is held against vertical motion by the resiliency of said block.
Claim 49
Dependent Claim 167 words
In an automatic injection device comprising: (a) a work plate on which an animal to be injected can be positioned, said work plate having an aperture therein; (b) a syringe mounted on the opposite side of said work plate from the side on which the animal to be injected is positioned during use of the device; (c) first means for moving said syringe back and forth between a first position wherein said syringe is entirely withdrawn on said opposite side of said work plate and a second position wherein the needle of said syringe protrudes through the aperture in said work plate; and (d) second means for detecting the presence of an animal to be injected in position on said work plate and for activating said first means, the improvement comprising: (e) third means for counting the number of times said first means has been actuated and (f) fourth means for shutting off the device when said first means has been actuated a preset number of times.
Claim 50
Dependent Claim 167 words
In an automatic injection device comprising: (a) a work plate on which an animal to be injected can be positioned, said work plate having an aperture therein; (b) a syringe mounted on the opposite side of said work plate from the side on which the animal to be injected is positioned during use of the device; (c) first means for moving said syringe back and forth between a first position wherein said syringe is entirely withdrawn on said opposite side of said work plate and a second position wherein the needle of said syringe protrudes through the aperture in said work plate; and (d) second means for detecting the presence of an animal to be injected in position on said work plate and for activating said first means, the improvement comprising: (e) third means for counting the number of times said first means has been actuated and (f) fourth means for shutting off the device when said first means has been actuated a preset number of times.

References Cited (Backward Citations)

US3051173A Cited
GB1242060A Cited
US3641998A Cited
US3964481A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-08-21 1982-02-20 1982-08-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-08-21 1986-02-20 1986-08-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-08-21 1990-02-20 1990-08-22 $7700.00 Window Closed / Lapsed

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