Patent SG-11201909642Y-A (SG)
Title: Reversible lift spring for raising and lowering a medical bed fifth wheel
Inventor: DELLACA THOMAS
IPC: A61G1/02
Filed: 2018-05-08
Abstract: OO C (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 22 November 2018 (22.11.2018) WIPO I PCT IiiimmolimionotiomioloiolloillomoiflovoimIE (10) International Publication Number WO 2018/210626 Al (51) International Patent Classification: A61G 7/08 (2006.01) A61G 1/02 (2006.01) (21) International Application Number: PCT/EP2018/061845 (22) International Filing Date: 08 May 2018 (08.05.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/506,447 15 May 2017 (15.05.2017) US (71) Applicant: HUNTLEIGH TECHNOLOGY LIMITED [GB/GB]; Arjohuntleigh House, Houghton Hall Business Park, Houghton Regis Bedfordshire LU5 5XF (GB). (72) Inventors: DELLACA, Thomas, Anthony; 919 Cam- panile, San Antonio, TX 78258 (US). WILSON, Kevin, Scott; 1835 Vinca Manor, San Antonio, TX 78260 (US). (74) Agent: STROM & GULLIKSSON AB; P.O. Box 4188, 203 13 MALMO (SE). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, (54) Title: REVERSIBLE LIFT SPRING FOR RAISING AND LOWERING A MEDICAL BED FIFTH WHEEL FIG (57) : A retractable wheel system includes a rotatable member, a swing arm attached to the rotatable member and a wheel, a swing mount attached to the rotatable member, and a spring member. The spring member is attached to the swing mount at a connection point on a first end and to the swing arm on a second end. The spring member is rotatable relative to the swing mount at the connection point. The spring member is configured to apply a force in an upward direction when the connection point is above a line extending between a wheel attachment point and a swing arm rotation point of the swing arm and a force in a downward direction when the connection point is below the line of the swing arm. A transportation unit including the retractable wheel system is also disclosed. [Continued on next page] WO 2018/210626 Al MIDEDIM011111 11111111E101001101011011101111101111 VOIS MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: — with international search report (Art. 21(3))