US3611452A - Invalid bed construction - Google Patents
Invalid bed construction Download PDFInfo
- Publication number
- US3611452A US3611452A US49672A US3611452DA US3611452A US 3611452 A US3611452 A US 3611452A US 49672 A US49672 A US 49672A US 3611452D A US3611452D A US 3611452DA US 3611452 A US3611452 A US 3611452A
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- US
- United States
- Prior art keywords
- frame
- scissors
- patient
- bed
- movement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
- A61G7/005—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame tiltable around transverse horizontal axis, e.g. for Trendelenburg position
Definitions
- FIG. 8 INVALID BED CONSTRUCTION Filed June 25,- 1970 3 Sheets-Sheet 1 FIGI I *-eo 59 11 n 61 AN; R INVENTORS: 153i MICHAEL TURKO FLOYD F. MUELLER ATT'YS Oct. 12, 1971 TURKQ EI'AL INVALID BED CONSTRUCTION FIG. 9 FIG. 8
- a bed with a scissors mechanism for lifting and lowering a patient-supporting frame is disclosed in co-pending co-owned application Ser. No. 1,222, filed Jan. 7, 1970.
- a scissors mechanism has a number of advantages over other lift mechanisms used in power-operated hospital beds, such advantages including simplicity and strength.
- the use of a scissors mechanism has been found to have an offsetting disadvantage in beds which must be tilted about a transverse horizontal axis into either a Trendelenburg (foot end up) or reverse Trendelenburg (head end up) position.
- the present invention is directed at overcoming the aforementioned problems.
- the bed consists of a caster-equipped base frame, an upper patient-supporting frame, and an expandable scissors mechanism disposed between the two.
- the scissors mechanism includes a pair of crossed and pivotally-connected scissors frames with their upper ends engaging the patient-supporting frame and their lower ends engaging the base frame.
- One of the scissors frames is unitary and rigid; the other scissors frame is composed of two sections pivotally connected together for relative movement about a transverse pivot line.
- Locking means are provided for normally maintaining the two sections in longitudinal alignment; however, when either Trendelenburg or reverse Trendelenburg adjustment is desired, the sections of the second scissors frame are Patented Oct. 12, 1971 pivoted one way or the other with respect to each other.
- the second scissors frame buckles in a controlled and gradual manner, the upper ends of the respective scissors frames assume different elevations, thereby causing the patient-supporting frame to tip into a Trendelenburg or reverse Trendelenburg position.
- This power-operated buckling action is achieved by using the same power means and lifting mechanism normally utilized for raising and lowering the bed. The result is a highly effective and efficient mechanism for a multiple-function poweroperated hospital bed.
- FIG. 1 is a perspective view of the main operating elements of a hospital bed embodying the present invention. For clarity of illustration, a portion of one scissors frame is broken away and the entire patient-supporting frame is illustrated in phantom;
- FIG. 2 is a fragmentary perspective View illustrating the releasable locking mechanism for the scissors frames
- FIG. 3 is an enlarged and detailed sectional view showing the locking and release mechanisms and illustrating in diagrammatic fashion the control mechanism for effecting release;
- FIG. 4 is a longitudinal sectional view taken along approximately the longitudinal mid line of the bed and illustrating the bed as it approaches a fully raised position. For clarity of illustration, the patient-supporting frame is illustrated in phantom;
- FIGS. 5 through 7 are sectional views similar to FIG. 4 but illustrating the bed in Trendelenburg, fully lowered, and reverse Trendelenburg positions, respectively;
- FIG. 8 is a fragmentary perspective view illustrating the scissors frame blocking means (used for achieving Trendelenburg position) in operative condition;
- FIG. 9 is a fragmentary end elevational view showing the blocking means in inoperative (solid line) and operative (broken line) positions;
- FIG. 10 is a fragmentary sectional view showing internal construction of the screw-drive assembly. 7
- FIGS. 1, 4, and 10 For clarity of illustration, the motor and screwdrive mechanism for operating the bed, although shown in FIGS. 1, 4, and 10, are omitted from FIGS. 5-7. It is to be understood, however, that such components are part of the embodiment represented in all views. In addition, and as brought out more fully hereinafter, the patientsupporting frame is illustrated in phantom so that its presence will not obscure the scissors mechanism to which this invention is primarily directed.
- the numeral 10 generally designates a power-operated hospital bed having a base frame A, a patient-supporting frame B, and an intermediate scissors mechanism C.
- the base frame A is generally U-shaped in configuration, having a pair of parallel side frame members 11 and an end frame 12. It will be observed that the side frame members 11 are of C-shaped cross section, havinglinwardly-facing channels for guiding movement of 'a scissors frame as the scissors mechanism extends and retracts.
- the base frame is equipped with conventional swivel casters 13.
- the patient-supporting frame B normally extends along a horizontal plane and is therefore usually disposed in parallel relation with respect to base frame A.
- the patient-supporting frame has a pair-of inwardly-facing channel frame members 14. extending longitudinally along opposite sides thereof. Head andfoot panels 15 and 16 are provided atoppositeends offrarne B.
- Mattress-supporting panels 17-20 illustrated in FIGS. 4-7 but omitted fram FIG. 1 to avoid unnecessary complication of the latter view, constitute part of the patientsupporting frame and are carried by supporting members 21, 22, 23 and 24.
- Scissors mechanism C comprises a pair of scissors frames 25 and 26.
- Each scissors frame is generally rectangular in configuration, frame 25 having a pair of spaced parallel side frame members 27 and a pair of end frame members 28 and 29.
- scissors frame 26 similarly has a pair of end frame members 30 and 31, each of its side frame members 32 is composed of upper and lower sections 32a and 32b.
- scissors frame 26 is as a whole divided into upper and lower sections 26a and 26b.
- the upper and lower sections of the scissors frame 26 are connected by pivots 33 for relative pivotal movement about the same transverse axis about which the respective scissors frames 25 and 26 pivot.
- the lower end member 28 of scissors frame 25 is pivotally connected to the side members 11 of the base frame A.
- the opposite or upper end of the scissors frame 25 is equipped with rollers 36 (FIG. 1) which travel in the channels 14 of the patient-supporting frame B.
- the upper end member 31 of scisors frame 26 is provided with laterally projecting pivots 31a which are rotatably received in openings in the side members 14 of the patientsupporting frame whereas the lower end of scissors frame 26 is equipped with rollers 37 (FIG. 1) which ride in the channels defined by the side members of base frame A.
- the ends of the scissors frames adjacent the head end of the bed pivot while the opposite ends of the respective scissors frames slide or shift longitudinally towards the beds head end.
- the rollers 36 and 37 of the respective scissors frames travel in channels 14 and 11 towards the foot end of the bed.
- drive means which, in the particular embodiment illustrated, comprises a lever assembly 38 and a motor 39.
- the lever assembly includes a pair of lever arms 40 which have their lower ends pivotally secured to the side members of scissors frame 25 intermediate end member 28 and pivot shaft 33.
- each side member 27 of scissors frame 25 is provided with depending projections 41 to which the lower ends of the lever arms are pivotally secured.
- each cam 44 comprises a guide member mounted along the underside of one of the members 32a of the upper section of scissors frame 26.
- the underside of each guide member defines a camsurface which extends longitudinally of the scissors frame, then slopes downwardly and forwardly away from that frame, and finally reverses in direction, curving upwardly and rearwardly with respect to such frame.
- the distinctive configuration of each cam surface results in a bed which will raise or descend at substantially constant speed and at substantially constant motor loading throughout its entire range of vertical movement.
- the reverse curvature of the cam surfaces at the front ends thereof assures that the lever assembly will remain in proper engagement with the cams even when the bed is fully lowered (FIG. 6).
- the lever assembly is operatively connected to motor 39 by means of a pair of upstanding plates 45 which serve as a clevis and which are connected at their upper ends to an internally threaded tube assembly 46.
- Such assembly comprises a tube 46a equipped with a nut 46b (FIG. 10)
- the nut threadedly receives the threaded drive shaft 47 of the reversible motor 39, the motor in turn being mounted upon end member 29 of scissors frame 25 by means of a pair of supporting brackets 48. Therefore, as motor 39 operates to rotate threaded shaft 47 in one direction, the cooperative action between the lever assembly and the cam assembly causes the scissors mechanism to contract and lift the patient-supporting frame B into the raised position illustrated in FIGS. 1 and 4, whereas rotation of the shaft in the opposite direction causes the scissors mechanism to expand and lower the patientsupporting frame into the fully lowered position illustrated in FIG. 6.
- the rear member 12 of base frame A supports a blocking member 50, the blocking member having a curved forward surface which conforms to the contour of end member 30 of scissors frame 26 when the blocking member is in the operative position shown.
- a shaft 51 extends horizontally (and longitudinally of the bed) beneath frame member 12 and is rotatably mounted thereon by means of a bracket 52. The front portion of the shaft is secured to the underside of the blocking member to one side of the vertical mid plane thereof. At its rear end, the shaft 51 extends upwardly and outwardly to define an operating handle 53.
- the position of the block illustrated in FIG. 8 is not a stable one, even though the handle engages stop 53a, because of the off-center support provided by shaft 51. Therefore, unless the block is restrained against tipping movement, it will swing by its own weight into the lowered or inoperative position illustrated in solid lines in FIG. 9. In that position, the block is disposed at a level beneath the path of travel of end member 30 of scissors frame 26.
- projection 54 engages handle 53 and normally holds the blocking assembly in the inoperative position shown in FIGS. 9 and 4.
- scissors frame section 26a The extent of downward pivotal movement of scissors frame section 26a is controlled by a suitable limit switch (not shown) which simply interrupts operation of motor 39.
- a pair of stop members 56 mounted on portions 34 of scissors frame members 32a are engageable with portions 35 of frame members 32b to positively limit the extent of downward buckling of the scissors frame 26 should any failure in the operation of the limit switch occur.
- Movement of the bed out of the Trendelenburg position of FIG. 5 is accomplished simply by reversing the steps described above; that is, the motor 39 is reversed to cause upward pivoting of lever arm assembly 38 to raise scissors frame section 26a and, when the two sections of scissors frame 26 are in planar alignment, to cause elevation of the patient-supporting frame into the fully raised position of FIG. 4. Because of the ofl-center mounting of blocking member 50, movement of end member 30 away from the blocking member results in automatic movement of the blocking member into the inoperative position of FIG. 9.
- each butterfly arm comprises a plate element disposed beneath the second or upper section 32a of each side member 32 of scissors frame 26.
- An upstanding shaft 58 supports each butterfly arm for rotational or pivotal movement about a generally vertical axis. In normal locking position, each butterfly arm has a wing or end portion 57a disposed beneath the upper end portion 35 of frame section 32b (FIG. 1), thereby preventing independent upward movement of upper section 32a.
- Synchronized operation of the butterfly arms on opposite sides of the bed is achieved by means of a transverse tube or cylinder 59 extending between frame member sections 32a and rotatably mounted thereon.
- a transverse tube or cylinder 59 extending between frame member sections 32a and rotatably mounted thereon.
- pins 60 which project upwardly from wing portions 57b of the butterfly arms and which are received in longitudinal slots 60a in tube 59, are urged towards the foot end of the bed to pivot such arms and withdraw wing portions 57a from beneath the lower members 32b of the split scissors frame 26 (FIG. 2).
- Such rotational movement of the tube may be achieved by any suitable control means 61 such as, for example, an operating cable connected to the tube, such cable being retracted either manually or electrically, as by means of a solenoid.
- a return force to urge the tube and the butterfly arms back into their original positions may be conveniently provided by simply weighing the tube with a suitable internal weight 62. (FIG. 3). It is to be understood, however, that any suitable means for urging thetube into its original position and for swinging the butterfly arms into their normal locking positions may be provided.
- FIGS. 6 and 7 illustrate the steps for shifting the bed into a reverse Trendelenburg position.
- the upper end of scissors frame 25 that is, the end of the frame adjacent end member 2.9engages upwardly-projecting stop elements 63 mounted upon base frame A.
- Such engagement occurs before the lever assembly 38 has completed its descent. Consequently, continued downward travel of the lever assembly permits the upper or second section 26a of scissors frame 26 to pivot downwardly about the axis of shaft 33 while the first or lower section of that frame is held stationary.
- a slight downward buckling of scissors frame 26 occurs. As illustrated in FIG. 6, such buckling is slight; in fact, the head end of the patient-supporting frame B drops only an inch or less lower than the foot end of that frame.
- stop members 64 Such members, illustrated most clearly in FIGS. 1, 2, and 7, are secured to the side members of scissors frame section 26b and have inwardly projecting terminal portions 64a which extend into the path of movement of scissors frame section 26a and which engage. the top surfaces of side members 32a to lock the sections of scissors frame 26 against further buckling action.
- FIG. 7 illustrates the bed in its full reverse Trendelenburg position. It is to be noted, however, that the inclined position will be maintained even if the driving motor is operated to continue the lifting action of lever assembly 38. In other words, if the lever assembly is lifted towards the vertical from the position shown in FIG. 7, the patient-supporting frame will move upwardly without changing the angle of inclination shown.
- the bed is shifted from reverse Trendelenburg position into its normal horizontal position by simply reversing the steps described.
- the butterfly arms clear the ends of frame members 32b and automatically swing into their original locking positions (FIG. 1) under the influence of weighted tube 59.
- threaded drive shaft 47 has an unthreaded terminal portion 47a. Normally nut 46b does not run off of the threads and onto the unthreaded terminal portion, even when the bed is in the fully lowered position of FIG. 6, because a limit switch (not shown) interrupts operation of the motor 39' when that position is achieved.
- a stud or guide pin 66 which is affixed to the nut and which projects radially through longitudinal guide slot 67 in the tube wall. Therefore, the nut may move longitudinally within the tube, to the limited extent permitted by the slot and stud, until it becomes unthreaded from the shaft, thus preventing damage which might otherwise occur should the limit switch fail.
- the operating mechanism is relatively simple in structure and light in weight, and that the same driving mechanism not only moves the patient-supporting frame between raised and lowered positions but also operates to shift such frame into Trendelenburg or reverse Trendelenburg positions as desired.
- An invalid bed having normally parallel base and patient-supporting frames, and a scissors mechanism therebetween for adjusting the elevation of said patient-supporting frame relative to said base frame, said scissors mechanism comprising a pair of crossed and pivotally-connected scissors frames having their upper ends engaging said patient-supporting frame and their lower ends engaging said base frame, the improvement wherein:
- one of said scissors frames is jointed for buckling action about a transverse horizontal line, and means for upwardly and downwardly buckling said one scissors frame about said transverse line for selectively varying the elevation of the upper end of said one scissors frame independently of the elevation of the upper end of the other scissors frame, whereby, said patientsupporting frame is selectively shifted into Trendelenburg or reverse Trendelenburg positions by the controlled buckling of said one scissors frame in opposite directions.
- said cam comprises at least one guide member mounted along the underside of said second section and defining a curved cam surface engaged by said lever arm.
- one of said lateral portions has stop means engageable with the other of said lateral portions for limiting the extent of buckling of said one scissors frame in at least one direction.
- stop means includes a stop member secured to one of said lateral portions and having an extension disposed in the path of movement of said other of said lateral portions.
- each of said scissors frames has an end slidably engaging one of said patient-supporting and base frames for horizontal sliding movementas said scissors mechanism expands and contracts, and blocking means for selectively restraining sliding movement of said one scissors frame as said lever arm is moved from a raised to a lowered position, whereby, downward movement of said lever arm while said one scissors frame is restrained against sliding movement results in downward buckling of said one scissors frame about said transverse line.
- said blocking means comprising a stop block movably mounted upon said base frame for movement between an operative position for blocking endwise sliding movement of said first section and an inoperative position permitting endwise movement thereof.
- An invalid bed having normally parallel base and patient-supporting frames, and a scissors mechanism therebetween for adjusting the elevation of said patient-supporting frame relative to said base frame, said scissors mechanism comprising a pair of crossed and pivotallyconnected scissors frames having their upper ends engaging said patient-supporting frame and their lower ends engaging said base frame, the improvement wherein:
- one of said scissors frames is jointed for buckling action about a transverse horizontal line coincident with the line of pivotal connection between said pair of scissors frames, and means for upwardly and downwardly buckling said one scissors frame about said transverse line for selectively varying the elevation of the upper end of said one scissors frame independently of the elevation of the upper end of the other scissors frame, whereby, said patient-supporting frame is selectively shifted into Trendelenburg or reverse Trendelenburg positions by the controlled buckling of said one scissors frame in opposite directions.
- said cam comprises at least one guide member mounted along the underside of said second section and defining a curved cam surface engaged by said lever arm.
- stop means includes a stop member secured to one of said lateral portions and having 'an extension disposed in the path of movement of said other of said lateral portions.
- each of said scissors frames has an end slidably engaging one of said patient-supporting and base frames for horizontal sliding movement as said scissors mechanism expands and contracts, and blocking means for selectively restraining sliding movement of said one scissors frame as said lever arm is moved from a raised to a lowered position, whereby downward movement of said lever arm while said one scissors frame is restrained against sliding movement results in downward buckling of said one scissors frame about said transverse line.
- An invalid bed having normally parallel base and patient-supporting frames, and a scissors mechanism therebetween for adjusting the elevation of said patient-supporting frame relative to said base frame
- said scissors mechanism comprising a pair of crossed and pivotallyconnected scissors frames having their upper ends engaging said patient-supporting frame and their lower ends engaging said base frame, one of said scissors frames having upper and lower sections pivotally joined along a transverse line for movement between aligned relation and buckled relation with respect to each other, said sections including pairs of longitudinal frame members having adjacent end portions in juxtaposition when said sections are aligned, one of said end portions terminating at a substantial distance from said transverse line, and a locking arm movably mounted upon the other of said end portions and being movable between a locking position wherein said arm engages said one of said end portions adjacent the termination thereof to limit relative movement between said sections and a releasing position wherein said arm is retracted to permit such movement, and means for shifting said arm between said locking and releasing positions.
- said means for shifting said locking arm includes a rotatable member mounted upon said one of scissors frame, means operatively connecting said rotary member to said locking arm for movement of the latter between locking and unlocking position as said rotary member is turned in opposite directions.
- said means for normally urging said arm into its locking position comprises a weight carried by said rotary member and normally urging said rotary member to rotate in one direction to direct said locking member into its locking position.
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- Health & Medical Sciences (AREA)
- Rehabilitation Therapy (AREA)
- Nursing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
- Invalid Beds And Related Equipment (AREA)
Abstract
THE UPPER END OF THAT FRAME TO BE POSITIONED BELOW OR ABOVE THE CORRESPONDING END OF THE OTHER SCISSORS FRAME. POWER DRIVE, COUPLED WITH A LEVER AND CAM ARRANGEMENT, PRODUCES SUBSTANTIALLY CONSTANT-SPEED LIFTING AND LOWERING ACTION OF THE PATIENT-SUPPORTING FRAME REGARDLESS OF THE PARTICULAR ELEVATION OF THAT FRAME.
Description
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US4967270A | 1970-06-25 | 1970-06-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3611452A true US3611452A (en) | 1971-10-12 |
Family
ID=21961057
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US49672A Expired - Lifetime US3611452A (en) | 1970-06-25 | 1970-06-25 | Invalid bed construction |
Country Status (2)
Country | Link |
---|---|
US (1) | US3611452A (en) |
CA (1) | CA925654A (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3711876A (en) * | 1971-05-05 | 1973-01-23 | Hill Rom Co Inc | Tilt bed |
US4449262A (en) * | 1981-09-08 | 1984-05-22 | Siemens Medical Laboratories, Inc. | Medical couch incorporating a lifting mechanism |
US5023967A (en) * | 1988-03-23 | 1991-06-18 | American Life Support Technology | Patient support system |
US5074000A (en) * | 1991-01-11 | 1991-12-24 | Ssi Medical Services, Inc. | Apparatus for performing head and foot Trendelenburg therapy |
EP0559940A1 (en) * | 1990-09-13 | 1993-09-15 | Hoskins Limited | Supporting appliance |
US6668408B2 (en) | 1988-03-23 | 2003-12-30 | Hill-Rom Services, Inc. | Patient care system |
US20070000059A1 (en) * | 2005-05-04 | 2007-01-04 | Bobby Brown | Tilting furniture |
US20070000058A1 (en) * | 2005-05-04 | 2007-01-04 | Bobby Brown | Tilting bed |
US20080086820A1 (en) * | 2006-10-16 | 2008-04-17 | Timothy Brenner | Leg elevating device, system, and method |
US20100031444A1 (en) * | 2006-10-16 | 2010-02-11 | Timothy Brenner | Leg elevating device, system and method |
US20150135431A1 (en) * | 2013-11-18 | 2015-05-21 | Völker GmbH | Person support apparatus |
US20160198674A1 (en) * | 2015-01-09 | 2016-07-14 | Mark Younger | Elevated pet bed device |
-
1970
- 1970-06-25 US US49672A patent/US3611452A/en not_active Expired - Lifetime
-
1971
- 1971-06-14 CA CA115559A patent/CA925654A/en not_active Expired
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3711876A (en) * | 1971-05-05 | 1973-01-23 | Hill Rom Co Inc | Tilt bed |
US4449262A (en) * | 1981-09-08 | 1984-05-22 | Siemens Medical Laboratories, Inc. | Medical couch incorporating a lifting mechanism |
US4451945A (en) * | 1981-09-08 | 1984-06-05 | Siemens Medical Laboratories, Inc. | Medical couch |
US5345629A (en) * | 1988-03-23 | 1994-09-13 | American Life Support Technology | Patient support system |
US5023967A (en) * | 1988-03-23 | 1991-06-18 | American Life Support Technology | Patient support system |
US6941598B2 (en) | 1988-03-23 | 2005-09-13 | Hill-Rom Services, Inc. | Patient care system |
US6668408B2 (en) | 1988-03-23 | 2003-12-30 | Hill-Rom Services, Inc. | Patient care system |
US5279010A (en) * | 1988-03-23 | 1994-01-18 | American Life Support Technology, Inc. | Patient care system |
EP0559940A1 (en) * | 1990-09-13 | 1993-09-15 | Hoskins Limited | Supporting appliance |
EP0494551A2 (en) * | 1991-01-11 | 1992-07-15 | Hill-Rom Company, Inc. | Apparatus for performing head and foot Trendelenburg therapy |
EP0494551A3 (en) * | 1991-01-11 | 1992-09-02 | Ssi Medical Services, Inc. | Apparatus for performing head and foot trendelenburg therapy |
US5074000A (en) * | 1991-01-11 | 1991-12-24 | Ssi Medical Services, Inc. | Apparatus for performing head and foot Trendelenburg therapy |
US7774876B2 (en) * | 2005-05-04 | 2010-08-17 | Stand-Up Bed Company | Tilting bed |
US20070000058A1 (en) * | 2005-05-04 | 2007-01-04 | Bobby Brown | Tilting bed |
US20070000059A1 (en) * | 2005-05-04 | 2007-01-04 | Bobby Brown | Tilting furniture |
US7802331B2 (en) | 2005-05-04 | 2010-09-28 | Transitions Industries, Inc. | Tilting furniture |
US20080086820A1 (en) * | 2006-10-16 | 2008-04-17 | Timothy Brenner | Leg elevating device, system, and method |
US20100031444A1 (en) * | 2006-10-16 | 2010-02-11 | Timothy Brenner | Leg elevating device, system and method |
US8239988B2 (en) | 2006-10-16 | 2012-08-14 | Timothy Brenner | Leg elevating device, system and method |
US8561231B2 (en) | 2006-10-16 | 2013-10-22 | Timothy Brenner | Leg elevating device, system, and method |
US20150135431A1 (en) * | 2013-11-18 | 2015-05-21 | Völker GmbH | Person support apparatus |
US9089459B2 (en) * | 2013-11-18 | 2015-07-28 | Völker GmbH | Person support apparatus |
US20160198674A1 (en) * | 2015-01-09 | 2016-07-14 | Mark Younger | Elevated pet bed device |
Also Published As
Publication number | Publication date |
---|---|
CA925654A (en) | 1973-05-08 |
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Legal Events
Date | Code | Title | Description |
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AS | Assignment |
Owner name: HAMILTON INDUSTRIES, INC., WISCONSIN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:AMERICAN HOSPITAL SUPPLY CORPORATION;REEL/FRAME:004013/0243 Effective date: 19820628 Owner name: HAMILTON INDUSTRIES, INC., 1316 18TH ST., TWO RIVE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMERICAN HOSPITAL SUPPLY CORPORATION;REEL/FRAME:004013/0243 Effective date: 19820628 |
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Owner name: HAMILTON INDUSTRIES, INC., ILLINOIS Free format text: SECURITY INTEREST;ASSIGNOR:AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, A NATIONAL BANKING ASSOCIATION;REEL/FRAME:004238/0072 Effective date: 19820628 Owner name: HAMILTON INDUSTRIES, INC. 555 SKOKIE BLVD., SUITE Free format text: SECURITY INTEREST;ASSIGNOR:AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, A NATIONAL BANKING ASSOCIATION;REEL/FRAME:004238/0072 Effective date: 19820628 |
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